JPH0573642B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a remote control unit for remotely controlling a mobile aircraft and work management data generated during movement using a single portable data input device. The present invention relates to a data transmission device configured to input data.

[Conventional technology]

Warehouses that store heavy items such as steel materials, rolled coils, rails, and construction materials are equipped with large overhead cranes to transport these items in and out. Normally, in such a large overhead traveling crane, a driver's cab is installed in the moving crane itself, and the operator operates from this cab, or a portable remote controller is installed and the remote controller is operated. Operated by an operator.

On the other hand, in recent years, it has become common for the quantities and types of the above-mentioned items stored in a warehouse to be centrally managed using a computer or the like. Therefore, when operating a crane to bring goods into or out of a warehouse, a code that identifies the goods, processing information as to whether the goods were brought in or taken out, and information about the goods are stored. Accurate inventory management is possible by inputting the quantity and quantity from a computer terminal.

In addition, in recent years, crane operators have become more multi-skilled, and the computer terminals necessary for inventory management are often installed above the crane operator's cab.
The crane operator moves the goods by looking at the data on both sides of the computer terminal while operating the crane.
They are currently performing tasks such as inputting travel information.

[Problem that the invention seeks to solve]

However, even in warehouses where cranes are used to carry goods in and out, and computers are used to manage inventory, as a means of further rationalization, crane operators are placed on the floor and are kept separate during non-crane operations. There is a need for work formats and equipment that allow these tasks to be carried out.

The present invention has been made in view of these circumstances, and its purpose is to provide an integrated structure that combines a portable remote control device for operating a crane from the floor and a data input device for inputting work management data. It is an object of the present invention to provide a data transmission device that allows a mobile unit operation and a data input operation to be performed by the same device, and allows a single operator to perform warehouse management work efficiently.

[Means for solving problems]

As shown in FIG. 1, the data transmission device of the present invention is composed of a portable data input device a and a mobile device-side data receiving device b mounted on a mobile device,
The portable data input device a includes a remote control unit c for inputting operation information for remotely controlling the mobile aircraft;
A data input section d that inputs work management data generated by the movement of the mobile aircraft, and a transmission control section that incorporates the input operation information and work management data into a time-sharing digital signal transmission frame and outputs it. e, and a transmitter f that wirelessly outputs the transmission frame output from the transmission control unit, and the mobile device side data receiving device b receives the transmission wirelessly output from the transmitter f of the portable data input device a. A receiver g that receives a frame, an operation information error detection unit that determines whether the operation information included in the transmission frame received by the receiver has been transmitted correctly, and an operation that the operation information error detection unit determines is correct. an operation signal output unit that outputs only information as an operation signal to the mobile device; a work management data error detection unit h that determines whether the work management data included in the transmission frame received by the receiver has been transmitted correctly; It has an error detector i that notifies the determination result of the work management data error detection unit, and a data output unit j that sends only the work management data determined to be correct by the work management data error detection unit to an external data processing device. There is.

[Effect]

In a data transmission device configured in this way, a remote control section and a data input section are built into the portable data input device, and the input operation information and work management data are built into the transmission frame and transmitted wirelessly. The data is output, received by a receiver of a mobile device-side data receiving device mounted on the mobile device, and sent to the mobile device and an external data processing device. Therefore, immediately after executing the movement operation of the mobile body, the operator can input work management data generated in conjunction with the movement of the mobile body using the same device.

As a result, a single operator can efficiently perform remote control and data entry work, and since the operator is on the floor, he or she can perform other tasks when not working with the crane, achieving further streamlining. can.

〔Example〕

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

FIG. 2 is a schematic diagram showing a warehouse management system using the data transmission device of the embodiment. Rails 1a and 1b are constructed near the ceiling of a warehouse building, and a crane 2 moves on these rails 1a and 1b.
The crane 2 is equipped with a data receiving device 3 on the mobile aircraft side.
is connected to a data processing device 5 via a transmission section 4, and is also connected to a control panel 7 that drives and controls a motor that moves the crane 2 or winds up a wire of a hook 6 that lifts an article.

The data processing device 5 is connected to a host computer 52 via a transmission path 51 such as guided radio, and relays data exchange between the mobile device side data receiving device 3 and the host computer 52, and also receives instruction information from the host computer 52. The electric display board 53
to be displayed.

Then, the operator 8 on the floor of the warehouse building looks at the work instructions displayed on the electronic display panel 53, operates the portable data input device 9 hanging from his shoulder, moves the goods, and inputs the work management data. Enter.

Note that the data processing device 5, transmission line 51, host computer 52, and electronic display panel 53 are existing products or products that can be constructed using conventional technology.

3a and 3b are a front view and a plan view showing the portable data input device 9. FIG. A data input section 13 consisting of a keyboard 11 and a display section 12 and a crane 2 are mounted on the top surface of the box-shaped housing 10.
A remote control unit 15 is provided in which various operation buttons 14 are arranged. Further, a battery case 16 is attached to the side surface of the housing 10 to house a battery that supplies driving power to each electronic component.

The operation buttons 14 include, for example, operation buttons for moving the crane 2 in north, south, east, and west directions, operation buttons for hoisting and lowering the wire of the hook 6, and an emergency stop button.

The keyboard 11 of the data input section 13 includes:
As shown in FIG. 4, character keys for inputting work management data such as codes for specifying articles and quantity of articles, and various function keys for indicating types of data such as loading/unloading are provided. Further, the display section 12 is formed of, for example, a liquid crystal display element, and displays data input using the character keys of the keyboard 11 and various data input using the function keys over a plurality of digits.

FIG. 5 is a block diagram showing the portable data input device 9. As shown in FIG. The work management data input to the data input section 13 consisting of a keyboard 11 and a display section 12 is transmitted to the transmission control section 1 consisting of a microcomputer.
7. Operation information from each operation button 14 of the remote control unit 15 is also input to the transmission control unit 17 . The transmission control section 17 incorporates the input work management data and operation information into a digital transmission frame and sends it to the output signal modulation section 18 . The output signal modulation section 18 converts the input transmission frame into a frequency modulation (FSK modulation) signal and sends it to the transmitter 19.
Send to. The transmitter 19 wirelessly outputs the frequency modulated signal.

The driving voltage V _D is supplied to each of the electronic components from a power supply circuit 22 connected to a battery 20 housed in a battery case 16 via a power switch 21 . Further, when the voltage of the battery 20 drops below a specified value due to long-term use, a warning light 23 consisting of an LED attached to the remote control unit 15 lights up.

FIG. 6 is a block diagram showing the mobile body side data receiving device 3 mounted on the crane 2. As shown in FIG. 2 in the diagram
4 is a receiver that receives the frequency modulated signal wirelessly output from the transmitter 19 of the portable data input device 9, and the frequency modulated signal received by this receiver 24 is sent to the remote control signal demodulator 25 and the data signal demodulator. The signals are input to the unit 26 and demodulated into the respective original transmission frames. The transmission frame output from the remote control signal demodulation section 25 is sent to the next operation signal output section 27.
Only the operation information is extracted, converted into a control signal, and input to the control panel 7 of the crane 2. The control panel 7 controls the crane 2 based on each input control signal.
and controls each drive motor 28 that drives the hook 6. In addition, the error detection section 29 detects whether or not there is a transmission error in the operation information included in the transmission frame output from the remote operation signal demodulation section 25. If an error is detected in the operation information, the operation The control signal output from the signal output section 27 is cut off.

Similarly, from the transmission frame output from the data signal demodulation section 26, only the transmission data information including the work management data is extracted by the data output section 30, and is transmitted as it is to the data processing device 5 via the transmission section 4. Further, the error detection section 31 detects whether or not there is a transmission error in the transmission data information included in the transmission frame output from the data signal demodulation section 26, and if an error is detected in the data, the data output The data output from the unit 30 is cut off.

Further, the test result of the error detection section 31 is sent to the lamp drive circuit 32. The lamp drive circuit 32 lights a green lamp 33a as an error detector if the test result is good, and lights a red lamp 33b as an error alarm if the test result is bad. Incidentally, the lamps 33a and 33b are attached to the lower side of the crane 2 so that the operator 8 can easily check them, as shown in FIG.

FIG. 7 shows an example of the configuration of the transmission frame 34 created by the transmission control unit 17 of the portable data input device 9.

The transmission frame 34 is an inverted double-transmission cyclic transmission frame commonly used in telemeters and the like. In FIG. 7, one frame consists of five words. One word consists of 32 bits. 4 after the synchronization word 34a is located at the beginning of the transmission frame 34
Two information words are placed consecutively. In the synchronization word 34a, the first bit is set to logic "1" and the 2nd to 30th bits are set to logic "0" to facilitate synchronization on the receiving side.

The information words 34b, 34c, 34d, and 34e are divided into a first half of 16 bits and a second half of 16 bits.
The latter 16 bits are transmitted by inverting the logic of the first half. This is called an inverted two-continuous transmission method, and is a method that can improve the error detection ability on the receiving side.

Each information word is distinguished by word address bits arranged at the 1st to 3rd bits. For example 34b
is assigned 101, 34c is assigned 011, and 34d is assigned 010.

A device number, so-called ID code, for identifying the crane 2 is arranged in the information word 34b. In this case, 12 bits are obtained by subtracting 3 bits for the word address and 1 bit for parity from the first 16 bits.
Can be used as an ID code.

The information words 34c and 34d store operation information indicating the operation state of each operation button 14 for operating the crane 2 in logic 1 or 0. Since the amount of operation information that can be stored is 12 bits per word, there are 24 items for 2 words.

Work management data set by the data input section 13 is stored in the information word 34e. If the amount of information that can be transmitted at one time is 12 bits, the set work management data can be transmitted in 12-bit binary code. Further, when transmitting work management data using a character code (for example, ASCII code), the code consisting of 7 or 8 bits per character may be transmitted in multiple transmissions as many times as the number of character strings.

When transmitting operation information and work management data at the same time, it is necessary to carefully consider that the operation information should have strong real-time characteristics and the responsiveness of start/stop operations should be quick. On the other hand, work management data does not need to be so fast, and a time lag of several seconds is acceptable. Therefore, the information words 34c, 34d
The operation information of the information word 34e is transmitted every time, and there is no problem even if the work management data of the information word 34e is transmitted multiple times.

Next, the operation of the portable data input device 9 constructed as shown in FIG. 5 will be explained. The transmission control unit 17 reads the operation status of each operation button 14 at a constant period _T0 , edits the transmission frame 34 shown in FIG. 7, and sends it to the output signal modulation unit 18. When one operation button 14 is pressed, while it is being pressed, the No. 2 information word area 34c or No. 2 information word area 34c or No. .3 is stored in the information word area 34d. Then, the transmission frame 34 including the operation information set as described above is repeatedly transmitted at the constant period T ₀ described above.

When transmitting character data, characters are input using the character keys of the keyboard 11, and information indicating the type of character data input using the character keys is input using the function keys. The key-input character data and a type code indicating the type of the character data are displayed on the display unit 12. After the operator 8 determines that the data displayed on the display unit 12 is correct, if the function key indicating [Send] is input, the multi-digit character data and type code displayed on the display unit 12 will be displayed. It is incorporated into the No. 4 information word area 34d of the transmission frame 34 as transmission data information.

The transmission frame 34 in which the operation information and work management data are incorporated as necessary is frequency-modulated by the output signal modulation section 18 and is wirelessly output from the transmitter 19.

In the mobile device side data receiving device 3, the frequency modulated signal received by the receiver 24 is demodulated into the original transmission frame 34 by each signal demodulating section 25, 26. Then, the error detection unit 29 detects each error in the device number in the No. 1 information word area 34b and the operation information in the No. 2 and No. 3 information word areas 34b and 34c, and performs inversion double-transmission verification, etc. Only when correct, the operation information is output to the control panel 7 via the operation signal output section 27. Thus, the crane 2 moves in response to the operation of the operation button 14.

If the transmission data information is stored in the No. 4 information word area 34d of the received transmission frame 34, the error detection unit 31 detects an error in the transmission data information in the No. 3 information word area 34d,
If the data is correct, the digital work management data is sent from the data output section 30 to the data processing device 5 via the transmission section 4. Further, as shown in FIG. 8, the result of error detection is displayed on each lamp 33a, 33b via the lamp drive circuit 32. That is, if the transmission is successful, the green lamp 33a lights up, and if a transmission error occurs, the red lamp 33b lights up. When the red lamp 33b lights up, the operator 8 uses the keyboard 11 of the data input section 13 to execute the sending operation again.

With the data transmission device configured in this way, the remote control section 15 for operating the crane 2 and the data input section 13 for inputting character data are incorporated into one portable data input device 9, so that the operation is easy. When the worker 8 operates the crane 2 to transport one article or one unit of article into this warehouse,
It is possible to easily input the code of the article, numerical data such as quantity, and processing type code such as loading/unloading at the data input unit 13. Therefore,
Since the operator 8 does not need to go to a separately installed data input terminal to input data, the work efficiency of the work of carrying in and out of articles and the data input work associated with the work of carrying in and out of goods can be greatly improved.

In addition, since the operation of the crane 2 and the data input can be performed by a single operator 8, the labor costs required for warehouse management are significantly reduced compared to the conventional case where 2 operators were required. can.

Additionally, when transmitting data between computers, normal response information (ACK) is sent from the receiving side to the sending side in order to confirm that the data is being transmitted correctly from the sending side to the receiving side.
Or, it was necessary to send back abnormal response information (NCK). Therefore, it is necessary to include a transmitter and a receiver on both the data sending and receiving sides. However, in this embodiment, since the sending side can easily check whether or not the data has been accurately transmitted by checking the lit state of the lamps 33a and 33b attached to the data receiving device 3 on the mobile device side, the portable data receiving device 3 There is no need to incorporate a receiver into the input device 9 to receive response information. As a result, the portable data input device 9 can be made smaller and lighter, reducing manufacturing costs and improving operability.

FIG. 9 is a block diagram showing a mobile device side data receiving device of a data transmission device according to another embodiment of the present invention. The same parts as in the previous embodiment shown in FIG. 6 are given the same reference numerals. The portable data input device is the same as the portable data input device 9 shown in FIG.

In the mobile device side data receiving device of this embodiment, as shown in the figure, a receiver 24a that receives a frequency modulated signal of remote control information and a receiver 24b that receives a frequency modulated signal of transmitted data information are separately provided. It is being Then, each received signal is processed separately. Even with such a configuration, substantially the same effects as those of the above-described embodiment can be obtained.

〔Effect of the invention〕

As explained above, according to the data transmission device of the present invention, since the portable remote control device for remotely controlling a mobile body such as a crane and the data input device for inputting work management data are integrated, Operations and data input operations can be performed on the same device, allowing a single operator to perform efficient warehouse management work.

Furthermore, separate error detection units detect whether or not the operation information and work management data included in the transmission frame received from the portable data input device have been successfully transmitted to the data receiving device on the mobile device side. Only when the condition is normal, the movement of the mobile aircraft is controlled and work management data is sent to the external data processing unit.

In other words, the operator recognizes that the operation information was not transmitted normally because the mobile aircraft did not move, and can confirm that the work management data was not transmitted normally using the notification information of the error alarm. It is possible. In addition, since only the information that was not transmitted normally needs to be re-entered via the portable data input device, it is possible to omit the re-input operation for the information that was transmitted normally, greatly improving the operability of the portable data input device. can be improved.

[Brief explanation of the drawing]

Fig. 1 is a functional block diagram showing the present invention, Figs. 2 to 8 show a data transmission device according to an embodiment of the present invention, and Fig. 2 shows a warehouse management system to which this device is applied. 3A and 3B are respectively a front view and a plan view showing the external appearance of the portable data input device, FIG. 4 is a diagram showing details of the data input section, and FIG. 5 is the portable data input device. FIG. 6 is a block diagram showing the device, FIG. 6 is a block diagram showing the data receiving device on the mobile unit side, FIG. 7 is a diagram showing the structure of the transmission frame, FIG. 8 is a diagram for explaining the effect, and FIG. FIG. 2 is a block diagram showing a data receiving device on the mobile device side of a data transmission device according to another embodiment of the present invention. 2... Crane, 3... Mobile body side data receiving device, 5... Data processing device, 7... Control panel, 8... Operator, 9... Portable data input device, 10... Housing, 1
DESCRIPTION OF SYMBOLS 1...keyboard, 12...display part, 13...data input part, 14...operation button, 15...remote control part, 1
7...Transmission control section, 18...Output signal modulation section, 19...
transmitter, 24...receiver, 27...operation signal output section,
29, 31...Error detection section, 30...Data output section,
33a, 33b...Lamp, 34...Transmission frame.

Claims (1)

[Scope of Claims] 1. Wireless transmission of various information including operation information for remotely controlling the mobile body to the mobile body side data receiving device 3 mounted on the mobile body 2 and this mobile body side data receiving device. In a data transmission device comprising a portable data input device 9, the portable data input device 9 includes a remote control section 14 for inputting operation information for remotely controlling the mobile device, and a remote control section 14 for inputting operation information for remotely controlling the mobile device; Data input unit 13 for inputting work management data generated accordingly
a transmission control unit 17 that incorporates the input operation information and work management data into a transmission frame of a time-division digital signal and outputs the same; and a transmitter 19 that wirelessly outputs the transmission frame output from the transmission control unit. The mobile device side data receiving device 3 includes a receiver 24 that receives the transmission frame wirelessly output from the transmitter 19 of the portable data input device 9, and a receiver 24 that receives the transmission frame received by this receiver. an operation information error detection unit 29 that determines whether the included operation information has been correctly transmitted; and an operation signal output unit that outputs only the operation information that the operation information error detection unit determines to be correct as an operation signal to the mobile body. 2
7, a work management data error detection unit 31 that determines whether or not the work management data included in the transmission frame received by the receiver has been correctly transmitted; and a work management data error detection unit 31 that notifies the determination result of the work management data error detection unit. A data transmission device comprising error alarms 32, 33a, and 33b, and a data output unit 30 that sends only work management data determined to be correct by the work management data error detection unit to an external data processing device. .