JP2956241B2 - Data processing system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data processing system used for a tool of a machine tool, a part or product management in a factory or a distribution system.

[0002]

2. Description of the Related Art Conventionally, in order to mechanize the management of tools of machine tools and the identification of parts and products on an assembly and transfer line in a factory, a system for identifying and managing various articles such as tools, parts and products. Is required. Therefore, Japanese Patent Laid-Open No.
A data processing system is proposed in which a data carrier having a memory as an identification target is provided, and necessary information is written to the data carrier by data transmission from outside, and the information is read as necessary. Have been.
Such a data carrier is used by being attached to a pallet or the like, and is configured to write or read data necessary for the data carrier from a write / read control unit arranged on the side of the pallet transport path.

[0003]

However, the conventional data carrier merely holds the data, and when some processing is performed based on the data held in the data carrier, the write / read control is temporarily performed. It is necessary to read data to the unit side and perform processing such as comparison, judgment, and calculation based on the data. However, if the data amount becomes large, it is necessary to read the data on the write / read control unit side, perform a predetermined operation, and repeat the writing, which not only increases the load on the host computer but also increases the communication time. There were drawbacks. Further, there is a disadvantage that the program on the host computer side is also complicated.

[0004] The present invention has been made in view of such problems of the conventional data processing system, and stores a predetermined program on the data carrier side and selects the program as necessary. It is a technical object to reduce the frequency of data transmission by executing the method.

[0005]

According to the present invention, as shown in FIG. 1, a status area for storing an operation state and a data area are provided.
Data area including multiple programs and multiple programs
Non-contact data transmission between a data carrier 3 having a memory 1 having a secure program area, a data transmission means 2 for demodulating commands and data given from outside and transmitting data read from the memory in a non-contact manner A writing / reading control unit 5 having a data transmission means 4 for performing the data transmission, wherein the data carrier comprises: a program writing means 6 for writing a program into a memory obtained from the data transmission means; Program selection means 7 for selecting a program stored in the memory
And a program execution means 8 for executing the selected program. The write / read control unit includes a program sending means 9 for writing the program on the data carrier, and a program for starting the selected program. Starting means 10.

[0006]

According to the present invention having the above features, a necessary program is previously written in the memory of the data carrier by the program sending means of the write / read control unit. The write / read control unit is a data carrier
By launching one of the programs
The data carrier alone is used in the data carrier to execute the arithmetic processing by the program using the data .
Can be. Therefore, the write / read control unit side
Check the operating status of the carrier, and when the
Only one can read. In this case, the amount of data transmission between the data carrier and the write / read control unit can be significantly reduced.

[0007]

FIG. 2 is a block diagram showing the configuration of a data processing system according to one embodiment of the present invention. In this figure, a data processing system includes a data carrier 12 directly mounted on a pallet 11 on which components to be identified are transported.
And a read / write head 13 for writing and reading data to and from the data carrier 12, and an ID controller 14 connected to the read / write head 13 and controlling its operation. The read / write head 13 and the ID controller 14 constitute the write / read control unit 5.
The ID controller 14 is connected to a host computer 15.

As shown in the block diagram of FIG. 3, the ID controller 14 has a microprocessor (CP) for controlling writing and reading of data to and from the data carrier 12.
U) 21 and a memory 22 for storing the system program and data thereof, and an input / output interface 23 for inputting / outputting with the host computer 15 are provided. The read / write head 13 has a modulation circuit 24 for modulating data to be transmitted to the data carrier 12 to which an output is given from the CPU 21 and a transmission unit 25 driven by the output. The transmission unit 25 is, for example, a FS
Data is transmitted to the data carrier 12 by outputting a K-modulated signal. Further, a reception signal obtained from the data carrier 12 is provided to a demodulation circuit 27 via a reception unit 26. The demodulation circuit 27 demodulates this signal and provides it to the CPU 21. Here, the modulation circuit 24, the transmission unit 25, and the reception unit 26 of the read / write head 13
The demodulation circuit 27 constitutes a data transmission unit 4 for transmitting data to and from a data carrier.

Next, the configuration of the data carrier 12 will be described with reference to FIG. Referring to FIG.
Is for receiving and transmitting a signal of a frequency emitted from the read / write head 13, and the received output is given to a demodulation circuit 32. The demodulation circuit 32 demodulates this signal and supplies the data to the S / P converter 33. The S / P converter 33 converts the given serial signal into a parallel signal and transmits it to the CPU 34. A read only memory (ROM) 35 for storing a predetermined processing program and a random access memory 36 are connected to the CPU 34. The random access memory 36 has a user program area for storing a plurality of user programs and a data area for storing data. The CPU 34 selects a predetermined program according to a command given from the ID controller 14 and executes an arithmetic process, as described later. The output of the CPU 34 is transmitted through a P / S converter 37 to a modulation circuit 38.
Given to. The modulation circuit 38 modulates this signal and supplies it to the transmission / reception unit 31. The transmission / reception unit 31 gives a signal to the read / write head 13 side by changing the resonance frequency of the resonance circuit as in the conventional example. Further, a signal for activating the CPU 34 when the read / write head 13 approaches and the constant voltage level is obtained in the resonance circuit is supplied to the transmission / reception unit 31. Here, the transmission / reception unit 31, the demodulation circuit 32, and the modulation circuit 38 constitute data transmission means 2 which demodulates command data given from the ID controller and transmits read data.

FIG. 5 is a diagram showing a memory map of the memory 36. As shown in the figure, the memory 36 has a program area 36a for storing a plurality of programs of program numbers 1 to N, and a data area 36b including a status area, a data area , a work area used for data processing, and the like. ing.

The status area is, for example, as shown in FIG. 5 (b), an area indicating a registered program number, a program mode flag, a program presence / absence flag indicating the presence / absence of a program, a run flag set in a run mode, Each area has a busy flag.

Next, the operation of this embodiment will be described with reference to the flowcharts of FIGS. First, when writing a program to the data carrier 12, FIG.
As shown in step 51 of FIG.
A program command is sent out. Data carrier 1
As shown in the flowcharts of FIGS. Then, the data carrier 12 starts operating,
In step 71, the reception of a command is awaited. If a command is received, the type of the command is identified in steps 72 to 75.
Go from 72 to 76 and set to program mode, step
Proceeding to 77, sets the program mode flag and sets the program number to a predetermined value. Then, the process proceeds to a step 78, where a response is sent to the ID controller 14, and the process returns to the step 71.

The ID controller 14 waits for a response in step 52. When the response is received, the process proceeds to step 53 to check whether the mode is the program mode. If it is not in the program mode, the process returns to step 51 to repeat the same processing, and if it is in the program mode, the process proceeds to the routine 54 to perform a program writing process. This is performed by sending out the program number and the program itself in addition to the program write command. When the program carrier receives the program write command, the program proceeds from step 73 to step 79 to check for a program error in the data transmission.
Write a program to a. When writing is completed, a program presence / absence flag is set in step 81, a response is sent in step 82, and the process returns to step 71. On the other hand, the ID controller waits for a response in step 55, and when the response is received, ends the program writing process. Here, ID controller 1
4 achieves the function of the program sending means 9 for sending a program to the data carrier 12 in steps 51 to 55, and the data carrier 12 is provided in steps 71 to 73 and 76 to 82.
In the program area 36
This achieves the function of the program writing means 6 for writing to a.

When the program of the data carrier 12 is operated, first, the ID controller 14 operates as shown in FIG.
As shown in (b), a run command is sent in step 61. The run command is transmitted with the program number to be executed added. Now data carrier 1
2 receives the run command and proceeds to step 83 from step 74 to set the mode of the data carrier to the run mode of the designated program number. Then, in step 84, a run mode flag and a busy flag are set, an execution program is registered, and a response is transmitted (step 85). Then, the routine proceeds to a routine 86, where the designated program is executed. When the program is completed, the routine proceeds to a step 87, where the run mode flag and the busy flag are reset. Here, the data carrier 12 has achieved the function of the program selecting means 7 for selecting the program of the program number specified in steps 74, 83 and 84. Further, the ID controller 14 achieves the function of the program starting means 10 for starting the program of the designated program number in steps 61 to 64.

The ID controller 12 waits for this response in step 62. When the response is received, the ID controller 12 checks in step 63 whether the data carrier 12 is busy. Send a write command. When the data carrier 12 receives these commands, it proceeds from step 75 to steps 88 and 89, executes a read or command based on the command, and sends out a necessary response. Wait for a certain period of time (step
90) After a predetermined time, the CPU is set to the standby mode by the sleep command (step 91), and the process is ended. Here, the data carrier 12 achieves the function of the program executing means 8 for executing the program specified in steps 86 and 87.

Next, an application example of the article identification system according to the present embodiment will be described. In FIG. 9, the pallet 101 is transported in the direction of the arrow on the transport line 100, and a data carrier 12 for holding data relating to the articles placed on the pallet is attached to the side wall of the pallet 101. A read / write head 13 and an ID controller 14 are provided along the transport line, and each of the articles is inspected as an inspection step, and data as an error with respect to a reference value is written in a data area of the data carrier 12, for example. In this embodiment, the inspection process includes three processes A, B, and C as shown in the figure, and the data area 3 of the data carrier respectively.
6b, for example, “0010”, “001”
The error data A1, B1, and C1 measured in the respective inspection steps are written into "1" and "0012" as shown in the figure.

After completing the inspection step C, the transfer line 1
00, the pallet is conveyed to the assembling process D. After passing through the inspection process C, the data D required in the next assembling process is calculated by the arithmetic processing based on these error data A1 to C1.
1 can be calculated and generated. That is, in the data carrier 12 of this embodiment, three error data A1 to
A program for determining whether or not the average value, the maximum value, the minimum value, or the like is within a predetermined reference range using C1 is stored in advance in the program area 36 of the data carrier.
Register in a. When the inspection step C is completed, the program is selected and started, and when the processing is completed, the data D1 is written to the address 0020 of the data area. When this process is completed, the CPU 34 in the data carrier is set to the standby mode by the sleep command. In this way, the data can be held until the next assembly process without consuming unnecessary power.

When the data carrier 12 reaches the assembling step D, the processed data D1 in the data carrier 12 is processed.
And performs a predetermined process. This eliminates the necessity of rereading these data A1 to C1 in the assembling process D and performing an arithmetic process, thereby reducing the communication time and the operating time in the assembling process and greatly reducing the load on the host computer. be able to.

[0019]

As described in detail above, in the present invention,
By holding a program in the data carrier and selectively executing the program, the amount of data to be transmitted with the write / read control unit can be significantly reduced. Also, only the data resulting from the arithmetic processing can be transmitted, and the data transmission time can be greatly reduced. Further, there is no need to perform such data processing on the host computer side, and the effect of reducing the load on the host computer can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a functional configuration of a data processing system according to the present invention.

FIG. 2 is a block diagram showing an overall configuration of an article identification system used in the present invention.

FIG. 3 is a block diagram illustrating a configuration of an ID controller and a read / write head.

FIG. 4 is a block diagram showing a configuration of a data carrier.

FIG. 5 is a memory map of a memory 36;

FIG. 6A is a flowchart illustrating a process at the time of writing a program by the ID controller according to the present embodiment, and FIG. 6B is a flowchart illustrating a process after a run command is transmitted by the ID controller according to the embodiment;

FIG. 7 is a flowchart (part 1) illustrating an operation of the data carrier according to the present embodiment.

FIG. 8 is a flowchart (part 2) illustrating the operation of the data carrier according to the present embodiment.

FIG. 9 is a schematic diagram showing a usage example when the present embodiment is applied to an article transport / inspection process.

[Explanation of symbols]

Reference Signs List 1 memory 2, 4 data transmission means 3 data carrier 6 program writing means 7 program selection means 8 program execution means 9 program transmission means 10 program activation means 12 data carrier 13 read / write head 14 ID controller 15 host computer 21 CPU 31 transmission / reception section 32 Demodulation circuit 33 S / P converter 34 CPU 35 ROM 36 RAM 36a Program area 36b Data area 37 P / S converter 38 Modulation circuit

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G06K 17/00

Claims (1)

(57) [Claims] A status area for storing an operation state;
Data area including data area and multiple programs
A data carrier having a data transmission means for transmitting a memory, and the data read out from said memory to demodulate commands and data supplied from an external source without contact with holdable program area, non of the data carrier
A write / read control unit having data transmission means for performing contact data transmission, wherein the data carrier writes a program obtained by the data transmission means into the memory. Means, a program selecting means for selecting a program held in the memory, and a program executing means for executing the selected program, wherein the write / read control unit is provided on the data carrier. Program sending means for writing a program, program starting means for starting the selected program,
A data processing system comprising: