JP2740018B2 - Mobile communication device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a mobile communication device that transmits work information from a command center such as an office to a work vehicle such as a forklift that works in a premises such as a factory or a warehouse. Things.

[Prior Art] Conventionally, as a mobile communication device of this type, for example, a work vehicle such as a forklift working in a factory or a warehouse,
A receiving device for receiving the radio wave transmitted from the transmitting device of the command center is provided, and an output device including an output unit for outputting and displaying the work information received by the receiving device in a visible state. It is provided. In this mobile communication device, when work information is received by the receiving device, a buzzer is activated to notify the worker of the reception of the work information by sound (see Japanese Patent Application Laid-Open No. Sho 62-193342). .

[Problems to be Solved by the Invention] However, in the conventional mobile communication device, when work information is received by the receiving device, a buzzer is uniformly generated during traveling as well as during cargo handling of the forklift. Sounds. For this reason, for example, if the buzzer sounds while the forklift is running to transport the cargo, the worker will look at the display device while the forklift is running, and the work efficiency cannot be reduced because the worker cannot concentrate on the running. There was a problem. The same problem also occurs in a configuration in which a worker is notified of the reception of work information by light using a rotating light.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and an object of the present invention is to be able to surely notify a worker of the reception of work information from a command center, and to allow a worker to travel while the work vehicle is running. It is an object of the present invention to provide a mobile communication device that can be concentrated and work efficiency can be improved.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention provides a work vehicle that works on a premises based on an instruction from a command center, the work vehicle transmitted from the transmission unit of the command center. Receiving means for receiving information, output means for outputting and displaying the work information received by the receiving means in a visible state, and receiving the work information to the worker based on the work information received by the receiving means. An informing means for informing, a vehicle speed detecting means for detecting a traveling speed of the work vehicle, and a notification to the worker by the informing means when the traveling speed detected by the vehicle speed detecting means is smaller than a predetermined value. The gist of the present invention is a mobile communication device provided with control means for permitting the communication.

[Operation] When the work information is transmitted from the transmission means of the command center, the work information is received by the reception means of the work vehicle. Then, the received work information is output and displayed in a visible state by the output means. At this time, the traveling speed of the work vehicle is detected by the vehicle speed detection means, and if the detected traveling speed is smaller than a predetermined value, the notification to the worker by the notification means is allowed.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, a transmitting / receiving device 4 as a transmitting means is installed in an office 1 as a command center.
The message is transmitted to a forklift 3 as a working vehicle that works in the premises of the factory 2. The transmission / reception device 4 includes an input unit 6 such as a keyboard for inputting a message, a control unit 7 for controlling an input signal from the input unit 6 and inputting / outputting an electric signal, and a A radio unit 8 transmits an electric signal as a radio wave and receives a radio wave from the forklift 3.

The message input by the input unit 6 is work information for instructing the worker W of the forklift 3 to perform work. The radio section 8 includes an FSK modulation circuit and a demodulation circuit, and uses a frequency of a vacant channel of the television and transmits and receives a weak radio wave which is not regulated by the Radio Law.

On the instrument panel 11 of the forklift 3, a transmission / reception device 5 as a receiving means for exchanging radio waves with the transmission / reception device 4 is mounted. The transmission / reception device 5 includes an FSK modulation circuit and a demodulation circuit in the same manner as the radio unit 8 and uses a frequency of a vacant channel of the television and transmits and receives a weak radio wave which is not regulated by the Radio Law. A unit 9 is provided, and a control unit 10 is connected to the wireless unit 9.

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

The output side of the control unit 10 is connected to a rotating lamp 15 that is turned on when work information is received by the wireless unit 9 and a buzzer 16 that emits a notification sound. The rotating light 15 is provided on a head guard 14 of the forklift 3 (see FIG. 1), and a buzzer 16 is incorporated on a front panel 5a of the transmitting and receiving device 5, and work is performed by the rotating light 15 and the buzzer 16. Notification means for notifying the person W of reception of the work information is configured.

On the other hand, to the input side of the control unit 10, a completion button 18 pressed to erase the display content displayed on the LCD 12 after the operation based on the instructed operation information is completed is connected. A vehicle speed sensor 19, which is mounted on a transmission (not shown) of the forklift 3 and detects the traveling speed of the forklift 3, is connected to an input side of the control unit 10.

When the work information from the transmitting / receiving device 4 is received by the wireless unit 9, the control unit 10 reads the detection signal detected by the vehicle speed sensor 19 and calculates the traveling speed V1 of the forklift 3. Then, the control unit 10 determines the running speed V1 at that time,
The reference traveling speed V2 stored in the internal memory is compared with the reference traveling speed V2. The reference traveling speed V2 in the present embodiment is such that the worker W
This is a traveling speed at which the forklift 3 can travel safely and reliably while observing the display content of D12, and is a value obtained experimentally.

Then, when determining that the calculated traveling speed V1 is lower than the reference traveling speed V2, the control unit 10 allows the buzzer 16 and the rotating light 15 to operate. The control unit 10 starts the measurement by the built-in timer 10a at the same time as operating the buzzer 16 and the rotating light 15 and stops the operation of the buzzer 16 and the rotating light 15 when it determines that a predetermined time has elapsed. Has become. On the other hand, if it is determined that the calculated traveling speed V1 is equal to or higher than the reference traveling speed V2, the control unit 10 does not operate the buzzer 16 and the rotating light 15, and the traveling speed V1 is changed to the reference traveling speed V2.
Wait for it to get smaller.

When another piece of work information is received by the wireless unit 9 while the work information is being displayed on the LCD 12, the control unit 10
Temporarily stores the work information in the internal memory,
The number of the received work information is displayed on the LCD 12. Third
The display of “1/4” at the top of the LCD 12 in the figure indicates that the number of received work information is four, and the work information received first among them is displayed on the LCD 12. This LCD12
Can be sequentially switched by pressing a switching button 20 incorporated in the upper part of the front panel 5a.

Then, when the work is performed according to the work information displayed on the LCD 12 and the completion button 18 is pressed, the control unit 10 erases the display content and causes the LCD 12 to display the next work information stored in the internal memory. . When the completion button 18 is pressed as described above, the control unit 10 causes the wireless unit 9 to transmit completion information for notifying the office 1 that the work based on the instructed work information has been completed. ing.

It should be noted that a numeric keypad 21 is incorporated on the front panel 5a of the transmitting / receiving device 5, and it is possible to input information to be transmitted to the office 1 by operating the numeric keypad 21.

Next, the operation of the present embodiment configured as described above will be described in the fourth.
The description will be made according to the flowchart shown in FIG.

First, the control unit 10 of the transmission / reception device 5 mounted on the forklift 3 waits for the work information from the transmission / reception device 4 of the office 1 to be received by the wireless unit 9 (Step 1, hereinafter referred to as Step S). . When determining that the work information has been received, the control unit 10 causes the work information to be displayed on the LCD 12 (S2) and causes the printer 13 to print the work information (S3). Then, the control unit 10 reads the detection signal detected by the vehicle speed sensor 19, calculates the traveling speed V1 of the forklift 3 (S4), and compares the traveling speed V1 with the reference traveling speed V2 previously stored in the internal memory. (S5).
At this time, if it is determined that the traveling speed V1 is lower than the reference traveling speed V2 (V1 <V2), the control unit 10 determines that the forklift 3 is stopped or traveling at a low speed, and operates the buzzer 16. Then, an alarm sound is generated and the rotary lamp 15 is turned on (S6). Therefore, the worker W can know that the work information has been received by the notification sound of the buzzer 16 and can know the contents of the work information by looking at the LCD 12 or the printer 13.

On the other hand, when the control unit 10 determines in S5 that the traveling speed V1 is equal to or higher than the reference traveling speed V2 (V1 ≧ V2), the forklift 3 travels at a considerable speed, and the worker W concentrates on traveling of the forklift 3. And the buzzer 16 and the rotary light 15 are not operated. For this reason, the worker W
The traveling sound can be performed efficiently without being distracted by the notification sound from 16.

When the traveling speed V1 is equal to or higher than the reference traveling speed V2 as described above, the control unit 10 waits until the traveling speed V1 becomes lower than the reference traveling speed V2. Then, when V1 <V2, the operation of the buzzer 16 and the rotating light 15 is allowed for the first time.

The control unit 10 activates the buzzer 16 and the rotary light 15 in S6, and at the same time, starts measurement by the timer 10a (S7). Then, the control unit 10 maintains the operation of the buzzer 16 and the rotating lamp 15 until the predetermined time has elapsed, and when it is determined that the predetermined time has elapsed (S8), the buzzer
16 and the rotating light 15 are stopped (S9).

Further, after the buzzer 16 and the rotary light 15 are stopped, the control unit 10 waits for the completion button 18 to be pressed (S10), and when it is determined that the completion button 18 has been pressed, the operation based on the work information displayed on the LCD 12 Is completed, the work information displayed on the LCD 12 is erased (S11), and completion information for notifying the office 1 of the completion of the work is transmitted from the wireless unit 9. Then, the control unit 10 returns to S1, and waits for the work information to be received again.

As described above, according to the mobile communication device of the present embodiment, the forklift 3 is running at a low speed or stops after the work information is received, instead of operating the buzzer 16 unconditionally when the work information is received. Since the buzzer 16 is activated only when the forklift 3 is running, the worker W is not distracted by the buzzer 16 when the forklift 3 travels, so that the worker W can concentrate on the traveling of the forklift 3 and improve the work efficiency accordingly. It becomes possible.

The present invention is not limited to the configuration of the above-described embodiment, and may be arbitrarily changed without departing from the gist of the present invention, for example, as follows.

(1) In the above embodiment, the received identification information is output and displayed on both the LCD 12 and the printer 13, but may be output and displayed on either one.

(2) In the above embodiment, the buzzer 16 is automatically stopped when a predetermined time elapses after the buzzer 16 is operated. However, the buzzer 16 may be stopped by pressing a button or the like.

(3) In the above embodiment, the buzzer 16 is operated when the forklift 3 is traveling at a low speed or is stopped. 16 will work. Therefore, when the forklift 3 is stopped and the work information is received during the cargo work, the buzzer 16 is not operated, the traveling speed V1 is lower than the reference traveling speed V2, and the cargo work is performed. The buzzer 16 may be operated only when the work information is received when it is not.

In this case, for example, a pressure sensor for detecting the load of the load on the fork of the forklift 3 is provided in the hydraulic system of the fork, and based on the detection signal output from the pressure sensor, whether the load operation is being performed. The determination may be made by the control unit 10 and the operation of the buzzer 16 may be controlled based on the result of the determination.

(4) In the above embodiment, the printer 13 is operated at the same time that the work information is displayed on the LCD 12, but the printer 13 does not have to be operated when the buzzer 16 is operated. Is not distracted by the sound emitted during printing when the forklift 3 travels.

(5) In the above embodiment, the rotating lamp 15 and the buzzer 16 constitute the notification means, but either one may be omitted.

[Effects of the Invention] As described in detail above, according to the present invention, it is possible to surely inform the worker of the reception of the work information from the command center, and to concentrate the worker on the traveling when the worker travels. Thus, there is an excellent effect that the working efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment embodying the present invention, FIG. 2 is a block diagram showing a relationship between a transmitting / receiving device of an office and a transmitting / receiving device of a forklift, and FIG. FIG. 4 is a flow chart showing the operation of 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 and receiving device as transmitting means, 5 is a transmitting and receiving device as receiving means, 10 is a control unit as control means, and 12 is output means. LCD, which constitutes a part of the printer, 13 is a printer which constitutes a part of the output means, 15 is a rotating light which constitutes a part of the notification means, 16 is a buzzer which constitutes a part of the notification means,
19 is a vehicle speed sensor as a vehicle speed detecting means, V1 is a traveling speed,
V2 is a reference traveling speed, and W is an operator.

 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-51299 (JP, A) JP-A-63-300099 (JP, A) JP-A-62-193342 (JP, A)

Claims (1)

(57) [Claims] 1. A work vehicle that works on a premises based on an instruction from a command center, receiving means for receiving work information transmitted from a transmission means of the command center, and work information received by the receiving means. Output means for displaying and displaying the work information in a visible state; notification means for notifying the worker of the reception of the work information based on the work information received by the reception means; and vehicle speed detection for detecting a traveling speed of the work vehicle. A mobile communication device comprising: a control unit; and a control unit configured to allow the notification unit to notify a worker when the traveling speed detected by the vehicle speed detection unit is smaller than a predetermined value.