JP3837634B2 - Method for monitoring manufacturing apparatus using wireless tag - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for monitoring the operating state of a manufacturing apparatus.
[0002]
[Prior art]
In a conventional method for monitoring the operating state of a manufacturing apparatus, the manufacturing apparatus and a monitoring device for monitoring the manufacturing apparatus are generally connected by wire as shown in FIG. 4 or FIG. In addition, as shown in FIG. 6, there is an attempt to connect wirelessly to a device for monitoring by attaching a wireless transmitter to the manufacturing apparatus.
[0003]
[Problems to be solved by the invention]
However, according to the above prior art, the method of wiring as many signal lines as the number of operating states shown in FIG. 4 between the manufacturing apparatus 50 and the monitoring equipment 23 is the simplest but the manufacturing apparatus 50 and the monitoring apparatus. When the distance between the devices 23 is long, there is a problem that the wiring work cost is high and it is difficult to easily cope with a change in the arrangement of the manufacturing apparatus 50 described later.
[0004]
As shown in FIG. 5, a signal input device 55 having a communication signal output function 53 is attached to the manufacturing apparatus 50, and a contact signal 51 representing the operating state of the manufacturing apparatus 50 is connected to the manufacturing apparatus 50 . Many methods are used to connect the manufacturing apparatus 50 and the monitoring device 23 by means, but not only the addition of hardware but also a contact signal 51 representing the operating state of the manufacturing apparatus 50 is taken in as a communication signal. Since it is necessary to produce application software for output, it is expensive. Further, since the number of manufacturing apparatuses 50 is frequently increased and decreased and the arrangement is changed in the manufacturing factory, the manufacturing apparatus 50 and the monitoring device 23 are each time. Since it is necessary to change the wiring between the two, especially when the number of manufacturing apparatuses is large, it is difficult to cope with it.
[0005]
A newly manufactured manufacturing device designed in advance so that it can capture the operating state of the manufacturing device to be monitored in the control device of the manufacturing device and output it to the monitoring device by means of communication. In this case, since the signal input device 55 and the communication signal output function 53 can be substituted by the control device, it is necessary to newly attach the signal input device 55 having the communication signal output function 53 to the manufacturing apparatus. However, there still remains a problem that the wiring between the manufacturing apparatus 50 and the monitoring device 23 needs to be changed due to increase / decrease in the number of manufacturing apparatuses 50 and change in arrangement.
[0006]
A signal input device 55 having a communication signal output function 53 is attached to the manufacturing apparatus 50 shown in FIG. 6, a contact signal 51 representing the operating state of the manufacturing apparatus 50 is connected to this, and a wireless transmitter 54 is further attached to the wireless communication device. Although the method of connecting to the monitoring device 23 is rarely used, the adaptability to the increase / decrease in the number of manufacturing apparatuses 50 and the change in the arrangement is high, but the cost is further increased, so the monitoring of the manufacturing apparatus is simple. It is difficult to respond to the demand to do.
[0007]
Therefore, when monitoring the manufacturing apparatus, the present invention replaces the operating state of the manufacturing apparatus with the tag information of the wireless tag and extracts it wirelessly, so that the manufacturing apparatus can be manufactured at low cost and also with respect to increase / decrease in the number of manufacturing apparatuses and change of arrangement. It is an object of the present invention to realize a method that does not require a wiring change between a device and a monitoring device.
[0008]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following features.
[0009]
Attach external power-driven wireless tags to the manufacturing device for the number of operating states that the device wants to monitor, and supply the power to the IC chip of the wireless tag using contact signals for each operating state that the device wants to monitor A monitoring method for connecting to a circuit and wirelessly monitoring the operating state of the device by returning the contact state of each wireless tag in response to a call from a reader device for the RFID tag attached in the vicinity of the device And, the RFID tag reader device attached in the vicinity of the device, in which some of the characters, numbers and symbols that can be handled as data by the wireless tag are written in advance as data on the IC chip of the wireless tag. when a call from, and if the contact is closed to return the data to the wireless tag is written in advance, if the contact is open power is supplied to the IC chip Since the wireless tag does not return data, the wireless tag is characterized in that the state of the contact, that is, the operation state of the manufacturing apparatus is replaced with the tag information of the wireless tag and transmitted to the device that monitors the operation state of the manufacturing apparatus. Monitoring method of manufacturing equipment used.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to FIGS.
[0011]
As many as the number of operating states that the manufacturing apparatus 50 wants to monitor, the external power supply type wireless tag 10 in which some of the characters, numbers, and symbols that can be handled as data in advance on the IC chip 11 are written as data. As shown in FIG. 1, the contact 51 representing the operation state of the manufacturing apparatus 50 is connected to the power supply circuit of the IC chip 11 of the wireless tag 10.
[0012]
As shown in FIG. 3, as many RFID tags readers as the number capable of communicating with all the wireless tags 10 attached to all the manufacturing apparatuses 50 to be monitored within a range where all the manufacturing apparatuses 50 to be monitored are installed. A communication antenna (hereinafter referred to as a communication antenna) 21 with a wireless tag connected to the device 22 is installed, and which communication antenna 21 communicates with the wireless tag 10 of which manufacturing apparatus 50 is determined.
[0013]
Next, a wireless tag reader device (hereinafter referred to as a reader device) 22 that controls communication with the wireless tag 10 attached to the manufacturing apparatus 50 and reads reply data from the wireless tag 10 is connected to the communication antenna 21. Then, it is possible to communicate with all the wireless tags 10 attached to all the manufacturing apparatuses 50 to be monitored from the reader device 22 via the communication antenna 21 .
[0014]
Then, the monitoring device 23 is connected to the reader device 22, and a request is made to communicate with all the wireless tags 10 attached to all the manufacturing apparatuses 50 to be monitored from the monitoring device 23 to the reader device 22 at regular intervals. And communicate with all the wireless tags 10 attached to all the manufacturing apparatuses 50 to be monitored.
[0015]
At the time of communication, the wireless tag 10 attached to the manufacturing apparatus 50 is a reader device that receives data written in advance on the IC chip 11 via the communication antenna 21 when the contact 51 representing the operating state of the manufacturing apparatus 50 is closed. However, when the contact 51 representing the operating state of the manufacturing apparatus 50 is open, no power is supplied to the IC chip 11 and nothing is returned to the reader device 22.
[0016]
When the monitoring device 23 receives the reply information from the wireless tag 10 via the reader device 22 and the monitoring device 23 returns data written in advance from the wireless tag 10. When the contact 51 is closed and nothing is returned, it can be determined that the contact 51 is open. As a result, the monitoring device 23 can identify the state represented by the contact 51, that is, the operating state of the manufacturing apparatus 50, and the manufacturing apparatus 50 is operating, stopped, abnormally stopped, abnormal cause 1, It is possible to display the operation state of the abnormality cause 2 and the abnormality cause 3 .
[0017]
Further , by storing this received information, that is, reply information from the wireless tag 10 attached to the manufacturing apparatus 50 at a fixed period, in the monitoring apparatus 23 itself or a computer connected to the monitoring apparatus 23, the manufacturing apparatus 50. In addition to displaying the current operating state, it is also possible to perform history and analysis of past operating states and create an operation report for the manufacturing apparatus 50.
[0018]
As for the communication method with the wireless tag 10, communication is performed one by one with all the wireless tags 10 attached to all the manufacturing apparatuses 50 to be monitored, that is, a reply from the wireless tag 10 designated as the communication partner is sent. A method of confirming the presence / absence and then proceeding to communication with the next wireless tag 10; a method of calling all the wireless tags 10 in the range covered by the communication antenna 21 and obtaining a reply within a predetermined time; However, in the latter case, since there are replies all at once from the wireless tag 10, it is necessary to identify from which wireless tag 10 the reply information is a reply. For this identification, a unique identification number which is possessed from the time when the wireless tag 10 itself is manufactured is returned together with data written for the purpose of transmitting the state of the contact signal 51, or all wireless tags are returned. 10 is written in advance with a unique name, number or symbol as data for the purpose of distinguishing it from other wireless tags 10, and is returned together with the written data for the purpose of transmitting the state of the contact signal 51. Is possible.
[0019]
As another embodiment 1, for the power supply to the IC chip 11 of the wireless tag 10, in addition to the common power supply from one power source shown in FIG. 1, for each IC chip 11 of the wireless tag 10 shown in FIG. 2. A power supply may be provided and supplied individually.
[0020]
As another embodiment 2, when receiving the operation state of the manufacturing apparatus 50 as the tag information of the wireless tag 10, data for the purpose of transmitting the state of the contact 51 in advance to the IC chip 11 of the wireless tag 10 is written. In addition to the device to be placed, a device capable of reading and writing to the wireless tag 10 is provided instead of the reader device 22 shown in FIG. 3. First, data is written to the wireless tag 10 via the communication antenna 21. You may read this again via
[0021]
As other embodiment 3, in addition to providing the communication antenna 21 and the reader device 22 separately, the communication antenna 21 and the reader device 22 are integrated, and all the monitoring devices to be monitored are installed in the range where all the manufacturing apparatuses 50 to be monitored are installed. It is also possible to provide as many integrated devices as the number capable of communicating with all the wireless tags 10 attached to the manufacturing apparatus 50 .
[0022]
【The invention's effect】
As described above, according to the present invention, by attaching the number of operating states to be monitored to the external power supply type wireless tag to the manufacturing apparatus, and turning on and off the power supply circuit thereof at the contact point indicating the state of the manufacturing apparatus, Since the operation status of the manufacturing device can be replaced with the tag information of the wireless tag, it can be taken out wirelessly, so it is inexpensive and between the manufacturing device and the monitoring device even if the number of manufacturing devices increases or decreases, or the layout changes. Thus, it is possible to realize a method that does not require the wiring change, and to easily monitor the operating state of the manufacturing apparatus.
[0023]
[Brief description of the drawings]
FIG. 1 is a functional configuration diagram illustrating a method of transmitting an operation state of a manufacturing apparatus to a communication antenna with a wireless tag using a wireless tag .
FIG. 2 is a diagram showing an embodiment other than FIG.
FIG. 3 is a system configuration diagram showing a method for monitoring the operating state of a manufacturing apparatus using the present invention.
FIG. 4 is a diagram showing an embodiment in the prior art (wiring up to a device for monitoring as many signal lines as the number of operating states);
FIG. 5 is a diagram showing an embodiment in the prior art (a signal input device having a communication signal output function is attached to a manufacturing apparatus and connected to a device for monitoring by communication );
FIG. 6 is a diagram showing an embodiment in the prior art (connecting to a device for monitoring by a wireless transmitter).
[Explanation of symbols]
10 External power supply driven wireless tag 11 IC chip 12 incorporated in the wireless tag Communication antenna 21 of the wireless tag built in the wireless tag 21 Communication antenna 22 with the wireless tag Reader device 23 for the wireless tag For monitoring Device 25 Wireless receiver 50 Manufacturing device 51 Contact signal 52 representing the operating state of the manufacturing device Supply power to an external power supply type wireless tag 53 Communication signal output function 54 Wireless transmitter 55 Signal input device 59 Manufacturing device and monitoring device Wiring to connect between

Claims (1)

A wireless tag that is driven by supplying power from outside to the manufacturing apparatus , that is, a wireless tag that can operate by supplying power from the outside to the IC chip portion in the wireless tag (hereinafter referred to as external power supply). Attach as many drive-type wireless tags (or simply as wireless tags) to the number of operating states that the device wants to monitor, and use the contact signal to indicate the operating state that you want to monitor for each operating state that the device wants to monitor. Monitoring that connects to the supply circuit and wirelessly monitors the operating state of the device by returning the contact state of each wireless tag in response to a call from the RFID tag reader device attached in the vicinity of the device a method, a character that can be pre-radio tag on the IC chip of the wireless tag is treated as data, the numbers, something out of the symbol as data Is squirreled can, when there is a call from a reader device for radio tag attached to the vicinity of the device, if the contact is closed to return the data to the wireless tag is written in advance, if the contact is open IC Since the power is not supplied to the chip, the wireless tag does not send back data, so that the contact state, that is, the operating state of the manufacturing apparatus is replaced with the tag information of the wireless tag and is transmitted to the device that monitors the operating state of the manufacturing apparatus. A method for monitoring a manufacturing apparatus using a wireless tag.

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