JPH0736977B2 - Item specification management device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention provides mobile communication devices attached to a plurality of articles and specification information of the articles transmitted from these mobile communication apparatuses via electromagnetic waves. The present invention relates to an article specification management device including a fixed communication device for reading.

[Conventional technology]

As a conventional article specification management apparatus, for example, there is one as shown in FIG.

Reference numeral 10 denotes a mobile communication device, which is hooked at each predetermined position of the vehicle body that has been put into the automobile manufacturing line. The configuration of this mobile communication device will be described below.

Reference numeral 2 denotes an antenna unit, which receives a read command RC coming from a fixed communication device 1 described later via an electromagnetic wave having a predetermined frequency. Reference numeral 3 amplifies a weak read command RC received by the antenna unit 2 and detects and AD-converts the amplified signal.
The AD conversion circuits 4 are decoders that decode whether or not the read command RC is present in the digital signal from the AD conversion circuit 3. When the decoder 4 decodes the read command RC in the digital signal from the AD conversion circuit 3, it outputs the read signal R to the memory operation circuit 5 described later.
Reference numeral 6 is a RAM in which specification information SD (model, standard, serial number, production history, etc.) peculiar to the vehicle body is stored in advance. When the memory operation circuit 5 receives the read signal R from the decoder 4, the RAM 6
Read the above-mentioned specification information SD peculiar to the vehicle from
SD is output to the DA conversion circuit 7 described later. Reference numeral 7 is the DA conversion circuit 7, which DA-converts the digital-specific specification information SD specific to the vehicle body from the memory operation circuit 5 and modulates it with a high-frequency signal of a predetermined frequency f, for example, in the PCM system, The signal SD1 is transmitted via the antenna unit 2.

On the other hand, 1 is a fixed communication device, which is installed in each work station of the manufacturing line and is modulated in response to the read command RC, including the specification information SD peculiar to the vehicle body that comes from the mobile communication device 10 via electromagnetic waves. The signal SD1 is received, and a work command at each work station is output to a robot or the like (not shown) based on the specification information SD unique to the vehicle body included in the modulated signal SD1.

[Problems to be Solved by the Invention]

However, in such a conventional article specification management device, since the specification information of the article is transmitted from the mobile communication device via the electromagnetic wave of a single frequency, the article to which the mobile communication device is attached is attached. When there is no choice but to bring them close to each other, the fixed communication device can receive the specification information from the desired mobile communication device by distinguishing it from other specification information among a plurality of specification information coming from each mobile communication device. There was a problem that I could not.

Therefore, as already proposed by the inventor of the present application, an identification code is set in advance for each mobile communication device, and the fixed communication device transmits each mobile communication device by transmitting the identification code of the desired mobile communication device. Inventions to be distinguished (Japanese Patent Application No. 60
-285668) can be applied, but since the types of identification codes that can be set in this way are finite,
As the number of managed items increases, the same identification code may be required to be used more than once, and thus the above problems cannot be fundamentally solved.

The present invention has been made in view of such conventional problems, and it is an object of the invention to provide an article specification management device capable of distinguishing and receiving respective specification information even when articles come close to each other. It is an issue.

[Means for Solving the Problems]

Then, the configuration of the article specification management device according to the present invention to achieve this object is such that the specification information (SD) peculiar to the article is stored together with the article that moves along the manufacturing line, and the specification is specified at a single frequency. A mobile communication device (30) that wirelessly communicates information (SD) and a higher-level device that manages the article is connected to the mobile communication device (30) and placed at a predetermined position on the manufacturing line. A plurality of mobile communication devices (30, 30, ..., 30) that are equipped with a fixed communication device (20) that automatically reads the item-specific specification information (SD) and that communicate with the same frequency are attached. In a product specification management device in a manufacturing line for loading a product, each mobile communication device (30) has a storage means (33) in which the product-specific specification information (SD) is stored in advance, and a predetermined identification. Code (ID) Holding identification code holding means (36)
, Read command (RC) and identification code (ID) from the fixed communication device (20), and other mobile communication devices (30, ..., 30)
Receiving means (31) for receiving a communication signal from another communication device including specification information (SD) from the device, and the receiving means (31)
The signal received by the fixed communication device (2) is checked from the other mobile communication device (30, ..., Or 30).
Specification information (SD) specific to the item sent to
When a delay instruction signal (D) is detected and a delay instruction signal (D) from the detection means (37) is input, a pause signal for a predetermined time Stop instruction means (38) for outputting (D1), and the identification code (ID) and read command (RC) from the receiving means (31)
When the received identification code (ID) matches the identification code (ID) held in the identification code holding means (36), the pause signal (38) from the stop instruction means (38) When D1) is not input, the read signal (R) is output based on the read command (RC), and when the stop signal (D1) from the stop instruction means (38) is input, the read signal (R) is output. R) is not output and a confirmation means (35) for stopping the reading of the specification information and a read signal (R) from the confirmation means (35) are input, the read signal (R) is read from the storage means (33). Read means (32) for reading the specification information (SD) peculiar to the own article based on the above), and a transmission means (34) for transmitting the specification information (SD) peculiar to the own article read by the reading means (32). It is characterized by that.

In this case, when the delay instruction signal (D) is input, the stop instructing means (38) activates the built-in random number generating circuit and pauses for a predetermined time defined in correspondence with the generated random number. Desirably, the delay generation circuit (25) for outputting the signal (D1) is provided, and the confirmation means (35) detects the read command (RC) in the AD-converted signal. In this case, the identification code (ID) in the AD-converted signal is collated with the identification code (ID) held in the identification code holding means (36), and if both collated identification codes match, the above stop is performed. When the pause signal (D1) from the instruction means (38) is not input, the read signal (R) is output based on the read instruction (RC), and the pause signal from the stop instruction means (38). When (D1) is input, the read signal (R Which is characterized in that it consists of the decoder (24) for halting the reading of the specification information without outputting desirable.

[Operation] Next, the operation of the present invention will be described based on the claim correspondence diagram shown in FIG.

In the mobile communication device (30), article-specific specification information (SD) is stored in advance in the storage means (33), and a predetermined identification code (ID) is held in the identification code holding means (36).

When the mobile communication device (30) reaches the work station, the receiving means (31) receives the read command (RC) and the identification code (ID) from the fixed communication device (20). The detection means (37) examines the received signal, and the received signal allows any of the other mobile communication devices (30, ..., Or 30) to provide the fixed communication device (20) with article-specific specification information (SD). When it is detected that the signal is transmitted, the delay instruction signal (D)
Is output. Then, when the delay instruction signal (D) is input, the stop instruction means (38) outputs a pause signal (D1) for a predetermined time.
Is output.

The confirmation means (35) issues a read command (RC) from the reception means (31).
When the input identification code (ID) and the identification code (ID) are input, it is checked whether the input identification code (ID) matches the identification code (ID) held in the identification code holding means (36). The confirmation means (35) is a case where both identification codes (ID) match, and the stop instruction means (3
When the pause signal (D1) from 8) is not input, the read signal (R) is output based on the read command (RC).
Then, when the read means (32) inputs this read signal (R), the specification information (SD) peculiar to the own article is read from the storage means (33), and the read specification information (SD) peculiar to the own article is read. Is transmitted by the transmission means (34). In addition, the confirmation means (35), even when both identification codes (ID) match,
When the stop signal (D1) is input from the stop instruction means (38), the read signal (R) is not output and the specification information read of the read means (32) is stopped.

In the case of this mobile communication device (30), when the delay instruction signal (D) is input, the stop instruction means (38) comprising the delay generation circuit (25) activates the built-in random number generation circuit to generate the random number. A pause signal (D1) is output for a predetermined time specified based on the generated random number.

Further, in the case of this mobile communication device (30), the confirmation means (35) composed of a decoder, when detecting that the AD-converted signal is a read command (RC), the AD-converted identification code ( ID) and the identification code (ID) held in the identification code holding means (36) are collated. If both collated identification codes match, the stop signal (D1) from the stop instruction means (38) is input. If not, the read signal (R) is output based on the read command (RC), and the stop instruction means (3
When the pause signal (D1) is input from 8), the read of the specification information is suspended without outputting the read signal (R).

〔Example〕

Hereinafter, an embodiment of the present invention will be described by taking an automobile manufacturing line as an example.

The basic structure of an automobile production line is as shown in FIG.

Here, 11 is a conveyor driven by a power motor (not shown) or the like in the direction of the arrow at a predetermined speed. 12,1
2a, 12b, etc. are vehicle bodies corresponding to articles, and these vehicle bodies 1
2, 12a and 12b are placed on the conveyor 11 at substantially equal intervals and in close proximity in consideration of improvement in vehicle production efficiency. Further, mobile communication devices 30, 30a, 30b having the same configuration are hooked at predetermined positions on the front surface of these vehicle bodies 12, 12a, 12b in the initial process of the manufacturing line. These mobile communication devices 30, 30a, 30b are respectively provided with a predetermined identification code ID and a vehicle body 12,1
2a and 12b each store unique specification information SD (model, standard, association number, production history, etc.), and when receiving a read command RC and an identification code ID from the fixed communication device 20 described later, the identification code Only the mobile communication device that matches the ID, for example, 30 reads the specification information SD and transmits it at a predetermined cycle via the electromagnetic wave of frequency f.

On the other hand, a work station 39 is installed at a predetermined position on the side of the conveyor 11. In this work station 39, 20 is a fixed communication for receiving the specification information SD which is periodically transmitted from the mobile communication device 30 hooked to the vehicle body 12 that has arrived at the work station 39 via electromagnetic waves of frequency f. The fixed communication device 20 is an antenna 40
The read command RC and the identification code ID of the mobile communication device 30 are constantly transmitted to a predetermined space near the conveyor 11 in front of the work station 39. Reference numeral 41 is a robot that performs a predetermined work on the vehicle body 12 corresponding to the specification information SD, and 42 is a robot control that restricts the drive of the robot 41.

Note that the vehicle body 12a has not been subjected to the predetermined work by the robot 41 in the work station 39, and the vehicle body 12b
Indicates that the robot 41 in the work station 39 has not performed a predetermined work yet, and the robot 41 in the work station 39 has already performed a predetermined work, and the vehicle body 12a is transferred to the next work station. It has been done.

The mobile communication device 30b hooked on the vehicle body 12b receives the read command RC from the fixed communication device 20, but its identification code ID and the identification code ID from the fixed communication device 20 do not match, so that The specification information SD is not transmitted.

The mobile communication device 30a hooked on the vehicle body 12a also receives the read command RC from the fixed communication device 20, but its identification code ID and the identification code ID from the fixed communication device 20 do not match. , The specification information SD is not transmitted.

Reference numeral 43 denotes a sequence controller that inputs the specification information SD unique to the vehicle body 12 from the fixed communication device 20, determines a work command corresponding to this specification information SD, and outputs this work command to the robot controller 42. This sequence controller 43
Is all identification codes of the mobile communication devices 30, 30a, 30b that are hooked on the vehicle bodies 12, 12a, 12b, etc. that are put into the manufacturing line from a host device such as a large computer (not shown) for production control
By inputting the ID, it is possible to determine that the vehicle body 12 is next to the vehicle body 12b, and the vehicle body 12a and the like is next to the vehicle body 12.

[Configuration of mobile communication device]

The specific configuration of the mobile communication device 30 is as shown in FIG.

Reference numeral 22 is an antenna section, and 23 is an AD conversion circuit for amplifying and detecting a weak high frequency analog signal from the antenna section 2 with a predetermined gain and performing AD conversion. Reference numeral 48 is a ROM that stores the identification code ID of the mobile communication device 30. The identification code ID is stored in advance in the initial process of the manufacturing line by a ROM writer or the like.

A decoder 24 reads the identification code in the digital signal as to whether or not the read command RC exists in the digital signal from the AD conversion circuit, whether it is the first data communication, the read command RC or the specification information. When the signal type such as SD communication is identified and detected, and the read command RC is detected, the identification code ID received following the read command RC matches the identification code ID stored in the ROM 48. If it is determined whether or not they match, a read signal R is output to the memory operation circuit 26 described later after a predetermined time.

Reference numeral 29 denotes a detection circuit, which is a signal received via the antenna unit 22 for determining whether or not the other mobile communication devices 30a, 30b etc. are transmitting the respective specification information SD to the fixed communication device 20. Judge by the presence or absence of. This detection circuit 29 has specification information
When it is detected that SD is being transmitted, the delay signal D is output to the delay generation circuit 25.
The detection circuit 29 is designed so that signals and noises (disturbance noises) can be distinguished and received, and another mobile communication device 30a or mobile communication device 30b can receive the fixed communication device 20 respectively. The fact that the specification information SD is being transmitted means that the received signal is matched with the clock signal to identify whether the received signal is noise. If it is not noise, the identification code in the digital signal is read and read. Detects by identifying the signal type such as command RC or specification information communication.

Reference numeral 25 is a delay generation circuit, which is a delay signal D from the detection circuit 29.
When it receives, activate the internal random number generator,
The pause signal D1 is output to the decoder 24 for a randomly determined time such as the time calculated by multiplying the specification information communication time by the generated random number, and when the delay signal D is released from the detection circuit 29, the decoder 24 is output. It operates so as to stop the output of the pause signal D1.

Reference numeral 26 is a memory operation circuit, which reads the specification information SD peculiar to the vehicle body 12 from a RAM 27 described later when receiving a read signal R from the decoder 24, and uses the specification information SD to a DA conversion circuit described later.
Output to 28. The memory operation circuit outputs a read end signal E to the decoder 24 when all the specification information SD is read from the RAM 27.

Reference numeral 27 denotes a RAM, which stores specification information SD unique to the vehicle body 12, and the specification information SD is stored in advance in the initial process of the manufacturing line.

Reference numeral 28 denotes the DA conversion circuit, which DA-converts the specification information SD from the memory operation circuit into an analog signal and performs, for example, PCM modulation by a carrier signal from the oscillation circuit 18 that oscillates a predetermined frequency f, The signal SD1 is transmitted via the antenna unit 22.

The mobile transmitters 30a and 30b are also configured similarly to the mobile transmitter 30.

In this way, since the same identification code ID has been set in the mobile transmission device 30, 30a, 30b, etc., when a race condition occurs in the transmission of the specification information SD, to the fixed communication device 20 first. Each mobile transmitting device 30, 30a or 30b operates while identifying the received signal so that the one in the transmitting state is prioritized.

Of the various parts of the mobile communication device, the antenna part 22 and the AD conversion circuit
The receiving means 31 is realized by 23, the confirming means 35 is realized by the decoder 24, the delay generating circuit 25 corresponds to the stop instructing means 38, the reading means 32 is realized by the memory operating circuit 26, and the RAM 27 is stored in the storing means 33. The detection circuit 29 corresponds to the detection means 37, and the ROM4
8 corresponds to the identification code holding means 36, and the DA conversion circuit 2
8, the oscillation circuit 18 and the antenna unit 22 correspond to the transmission means 34.

[Configuration of fixed communication device]

Further, the specific configuration of the fixed communication device 20 is as shown in FIG.

40 is the above-mentioned antenna, and 44 is a high-frequency amplifier circuit for amplifying a high-frequency signal of frequency f coming from the mobile communication devices 30, 30a, 30b. Reference numeral 46 denotes an AD conversion circuit, and the amplification circuit 44
Convert the high frequency signal from to a digital signal. Reference numeral 47 is a digital control circuit, which processes the digital signal from the AD conversion circuit 46 to obtain the specification information SD of each of the vehicle bodies 12, 12a, 12b, etc.
And the specification information SD is sequentially stored in a predetermined address of the RAM 48. Reference numeral 48 is a RAM that stores the received specification information SD. Reference numeral 50 denotes a RAM that stores a calculation processing program.

Reference numeral 51 denotes a microprocessor, which performs arithmetic processing based on the program stored in the RAM 50 and the specification information SD stored in the RAM 48, and outputs it to the sequence controller 43 described later via the interface circuit 56. Further, the microprocessor 51 outputs the read command RC and the identification code ID of the next vehicle body 12b to the digital control circuit 52, which will be described later, at a predetermined timing after the above-mentioned arithmetic processing. It should be noted that the microprocessor 51 uses all or part of the specification information SD stored in the mobile communication devices 30, 30a, 30b, etc., based on new input information from an external keyboard device (not shown) or the like. It also has the function of rewriting to new specification information SD.

Reference numeral 52 denotes a digital control circuit, which receives a read command RC and an identification code ID from the microprocessor 51 at a predetermined timing, converts the read command RC and the identification code ID into a predetermined format, and outputs the DA conversion circuit 54 to be described later.

Reference numeral 53 is an oscillator, which oscillates a carrier signal of a predetermined frequency f and outputs the carrier signal to a DA conversion circuit 54 described later. Reference numeral 54 denotes the DA conversion circuit, which modulates the read command RC and the identification code ID from the digital control circuit 52 based on the carrier signal of the frequency f from the oscillator 53, and converts this modulated signal into an analog signal. It is designed to output to the high frequency amplifier circuit 55. Reference numeral 55 is the high-frequency amplifier circuit, which amplifies the modulated signal from the DA conversion circuit 54 and sends it out through the antenna 40.

49 is a common bus which serves as a path for exchanging information among the RAMs 48, 50, the microprocessor 51, the interface circuit 56, and the digital control circuit 52.

Since the microprocessor 51 also has a function of rewriting all or part of the specification information SD to new specification information SD based on new input information, the new specification information SD and the identification code ID are used as a keyboard device or the like. From the mobile communication device 3 via the digital control circuit 52, the DA conversion circuit 54, the high frequency amplification circuit 55, and the antenna 40.
By adding the write command WC to the new specification information SD and the identification code ID to 0, 30a, 30b, etc., the mobile communication device 30 is transmitted.
When the specification information SD and the identification code ID are received via the antenna unit 22 together with the write command WC from the fixed communication device 20, the decoder 24 decodes the write command WC and the identification code ID,
The memory operation circuit 26 stores the following specification information SD in the RAM 27 so that the specification information SD is rewritten for the mobile communication device specified by the identification code ID.

Of the respective units of the fixed communication device 20, a microprocessor 51,
The digital control circuit 52, the oscillating circuit 53, the DA converting circuit 54, the high frequency amplifying circuit 55 and the antenna 40 implement the second transmitting means.

[Operation of Example]

In the article specification management device having such a configuration, the mobile communication device 30, which is conveyed to the conveyor 11 and arrives at the work station 39, and which is attached to the vehicle body 12 about to receive a predetermined work, The working station 39
The mobile communication device 30b attached to the vehicle body 12b that has been subjected to predetermined work at
Mobile communication device 30a attached to vehicle 12a arriving at
The operation will be described assuming that each of them receives the read command RC from the fixed communication device 20.

First, the mobile communication device 30 attached to the vehicle body 12 transported to the work station 39 inputs the read command RC from the fixed communication device 20 to the decoder 24 via the antenna unit 22 and the AD conversion circuit 23 and decodes it. Then, the decoder 24 further confirms whether the input identification code ID and the identification code ID stored in the ROM 48 match. When it is confirmed that the mutual identification codes ID match, the decoder 24 outputs the read signal R to the memory operation circuit 26. The memory operation circuit 26 to which the read signal R is input reads the specification information SD from the RAM 27 and outputs the read specification information SD to the DA conversion circuit 28. DA
In the conversion circuit 28, when the specification information SD from the memory operation circuit 28 is input, predetermined modulation is performed by the high frequency signal of the frequency f output from the oscillation circuit 18, and the modulated signal SD1 is generated, and the modulated signal SD1 is generated via the antenna unit 22. To send. Then, when the memory operation circuit 26 reads all the specification information SD from the RAM 27, the end signal E is output to the decoder 24.

After that, when the mobile communication device 30 receives the read command RC from the fixed communication device 20 again, the decoder 24 outputs the read signal R and repeats the above-described read operation after a lapse of a predetermined time.

On the other hand, when the fixed communication device 20 receives at the antenna 40 the specification information SD transmitted from the mobile communication device 30 as a response corresponding to the read command RC, the high frequency amplification circuit 44 amplifies this signal and the AD conversion circuit 46 receives it. Output. Then, the AD conversion circuit
Reference numeral 46 converts the high frequency analog signal from the high frequency amplifier circuit 44 into a digital signal. Next, the digital control circuit 47 processes the digital signal from the AD conversion circuit 46 and
Demodulate the specification information SD of. Also, this digital control circuit
47 stores this demodulated specification information SD in a predetermined address of RAM 48. Then, the microprocessor 51 performs processing based on the program stored in the RAM 50 and the specification information stored in the RAM 48. Then the microprocessor
51 transmits the specification information SD of the vehicle body 12 to the sequence controller 43 via the interface circuit 56.

When the sequence controller 43 inputs the specification information SD,
The arrival of the vehicle body 12 is recognized by determining the vehicle body number included in the specification information SD. Next, a predetermined work instruction corresponding to this specification information SD is output to the robot controller 42. Then, the robot controller 42 performs a predetermined operation on the vehicle body 12 by controlling the driving of the robot 41. When the predetermined work is performed on the vehicle body 12 in this manner, the conveyor 11 conveys the vehicle body 12 to the next work station and the vehicle body 12a to the work station 39. Then, the same operation as described above is performed on the vehicle body 12a.
For the mobile communication device 30a.

By the way, the signal input to the mobile communication device 30, for example,
Mobile communication device 30a or mobile communication device 3 having the same identification code ID
It is assumed that the specification information SD is 0b.

In this case, in the mobile communication device 30, first, the detection circuit 29 detects that the input signal is the specification information SD from another mobile communication device 30a or 30b and detects the delay signal D by the delay generation circuit.
Output to 25. Next, a delay generation circuit that receives the delay signal D
25 outputs a pause signal D1 to the decoder 24 at randomly defined times. Then, the decoder that received the pause signal D1
24 does not output the read signal R to the memory operation circuit 26 and does not read the specification information SD of its own article.

Then, the other mobile communication device 30a or 30b receives the specification information SD
After the end of the transmission, the detection circuit 29 of the mobile communication device 30 no longer detects the specification information SD from the other mobile communication device 30a or 30b, and stops outputting the delay signal D. The delay generation circuit 25, which has stopped inputting the delay signal D, stops outputting the pause signal D1.

After that, when the mobile communication device 30 inputs the read command RC and the identification code ID from the fixed communication device 20, the decoder 24 decodes and outputs the read signal R to the memory operation circuit 26, and the subsequent operation is as described above. Will be similar to.

In the present embodiment, the automobile manufacturing line has been described, but the present invention is not limited to this. For example, in the case of an assembly process of an electric product in which a large number of electric products are conveyed while being loaded on a pallet, etc. It can also be applied to a specification management device.

〔The invention's effect〕

As described above, according to the present invention, in the mobile communication device (30), the storage unit (33) stores the article-specific specification information (S).
D) is stored in advance, and the predetermined identification code (ID) can be held in the identification code holding signal (36), and when the mobile communication device (30) reaches the work station,
The receiving means (31) can receive the read command (RC) and the identification code (ID) from the fixed communication device (20), the detecting means (37) examines the received signal, and the received signal detects other movements. When it is detected that any of the communication devices (30, ..., Or 30) has transmitted the article-specific specification information (SD) to the fixed communication device (20), the delay instruction signal (D ) Is output, and the stop instruction means (38) outputs a pause signal (D1) for a predetermined time when the delay instruction signal (D) is input, and the confirmation means (35) is the reception means (3).
When the read command (RC) and identification code (ID) are input from 1), check and confirm whether the input identification code (ID) and the identification code (ID) held in the identification code holding means (36) match. The means (35) is a case where both identification codes (ID) match, and when the pause signal (D1) from the stop instruction means (38) is not input, the read signal (R) is generated based on the read command (RC). ) Is output, and this read signal (R)
When the reading means (32) inputs the specification information (SD) specific to the own article from the storage means (33), the transmission means (34) transmits the read specification information (SD) specific to the own article. Further, the confirmation means (35) can stop the stop instruction means (38) even when both identification codes (ID) match.
When the rest signal (D1) from the fixed communication device (D1) is input, the reading signal (R) is not output and the reading of the specification information of the reading means (32) can be paused. 20) can send a read command (RC) and an identification code (ID) to specify the desired mobile communication device (30), and the fixed communication device (20) is already in communication with the desired mobile communication device. Yes and same identification code (ID)
When the other mobile communication device (30, ..., Or 30) approaches, even if the other mobile communication device (30, ..., Or 30) receives the read command (RC), the detection means ( 37)
When the mobile communication device (30) in communication with the fixed communication device (20) is detected, the stop instruction means (38) outputs a pause signal (D1) to stop the transmission for a predetermined time and make it stand by. Therefore, it is possible to prevent a malfunction in which a plurality of mobile communication devices (30) simultaneously send specification information to the fixed communication device (20).

Therefore, the fixed communication device (20) can individually receive the specification information (SD) from each mobile communication device (30), and the received information can be reliably distinguished, and the received specification information (SD) can be easily identified, and confusion of specification management can be prevented.

In this case, when the stop instruction means (38) of the mobile communication device (30) is configured as the delay generation circuit (25),
When the delay instruction signal (D) is input, the built-in random number generation circuit is activated, and the pause signal (D1) is output for the predetermined time specified based on the generated random number, and the pause signal (D1)
Even if the output of the above is stopped, it is possible to prevent multiple mobile communication devices (30, 30, ..., 30) from responding at the same time by lowering the probability of responding to multiple simultaneously by setting the time based on a random number. , Multiple mobile communication devices (30,30,
, 30) exist in the same area at the same time, the probability that the delay time of each device will match will be greater when the delay time is set randomly based on a random number than when a specific delay time is set. Low, the probability that each mobile communication device (30) can communicate individually can be increased.

Further, when the confirmation means (35) of the mobile communication device (30) is configured as a decoder (24), when it is detected that the AD-converted signal is a read command (RC), the AD-converted identification is performed. The code (ID) is collated with the identification code (ID) held in the identification code holding means (36), and if both identification codes (ID) match, the pause signal (D1) from the stop instruction means (38) Is not input, the read signal (R) is output based on the read command (RC) to read the specification information (SD), and the stop signal (D) from the stop instruction means (38) is output.
When 1) is input, reading the specification information (SD) can be suspended without outputting the read signal (R), which shortens the matching time and reduces the specification information (SD). ) Can be read efficiently,
The device configuration can be downsized and generalized, and the device can be inexpensive.

[Brief description of drawings]

FIG. 1 is a diagram corresponding to the claims of the present invention, FIG. 2 is an overall configuration diagram of an article specification management device according to an embodiment of the present invention, and FIG. 3 is a configuration diagram of a mobile communication device in FIG. FIG. 4 is a block diagram of the fixed communication device in FIG. 2, and FIG. 5 is a block diagram of a specification management device for articles in the prior art. [Explanation of Symbols] 19 ... Second transmitting means 20 ... Fixed receiving device 30,30a, 30b ... Mobile communication device 31 ... Reception means 32 ... Reading means 33 ... Storage means 34 ... Sending means 35 …… Confirmation means 36 …… Identification code holding means 37 …… Detection means 38 …… Stop instruction means ID …… Identification code RC …… Read command SD …… Specification information R …… Read signal

Claims (3)

[Claims] 1. A mobile communication device (30) which accompanies a moving product on a manufacturing line, stores specification information (SD) unique to the product, and wirelessly communicates the specification information (SD) at a single frequency, A fixed communication device that is connected to a higher-level device that manages the above-mentioned article, is placed at a predetermined position in the manufacturing line, and automatically reads the specification information (SD) specific to the article from the mobile communication device (30) by wireless communication. (20) and a plurality of mobile communication devices (3
0,30, ..., 30) is attached to each of the mobile communication devices (30), the specification information (SD) peculiar to the product is attached to each mobile communication device (30). Storage means (33) stored in advance, identification code holding means (36) for holding a predetermined identification code (ID), read command (RC) from the fixed communication device (20) and identification code (ID) ), And a receiving means (31) for receiving a communication signal from another communication device including specification information (SD) from the other mobile communication device (30, ..., 30), and the receiving means (31). Detecting the received signal, and detecting means (37) for outputting a delay instruction signal (D) when detecting that the received signal is specification information (SD), and a delay instruction from the detecting means (37). A stop instruction that outputs a pause signal (D1) for a specified time when the signal (D) is input The read command (RC) and the identification code (ID) from the stage (38) and the receiving means (31) are input, and the received identification code (ID) and the identification held in the identification code holding means (36) are input. When the code (ID) matches, and when the pause signal (D1) from the stop instruction means (38) is not input, the read signal (R) is output based on the read command (RC), A confirmation means (35) for suspending the reading of the specification information without outputting the read signal (R) when the stop signal (D1) is input from the stop instruction means (38), and the check means (35). ), A reading means (32) for reading the specification information (SD) specific to the own article from the storage means (33) based on the reading signal (R) when the reading signal (R) is inputted, and the reading means (32). 32) The sender who sends the specification information (SD) unique to the product that is read by (34) and the specification management system of articles comprising the. 2. The stop instructing means (38) activates a built-in random number generating circuit when a delay instructing signal (D) is inputted, and a stop signal for a predetermined time defined based on the generated random number. The article specification management device according to claim 1, comprising a delay generation circuit (25) for outputting (D1). 3. The confirming means (35), when detecting that the AD-converted signal is the read command (RC),
The AD-converted identification code (ID) is collated with the identification code (ID) held in the identification code holding means (36), and if both collated identification codes match, the stop instruction means (38) When the pause signal (D1) of No. 1 is not input, the read signal (R) is output based on the read command (RC), and the pause signal (D1) from the stop instruction means (38) is input. The specification management device according to claim 1, further comprising a decoder (24) for suspending the reading of the specification information without outputting the read signal (R).