JPH07154291A - Noncontact data setting device and communication system using same - Google Patents

Abstract

PURPOSE:To easily and surely set an individual code signal to a transponder. CONSTITUTION:A stationary equipment A sends a power supply use electromagnetic wave in which write data to a transponder and address information for write address designation are superimposed to the transponder and a transponder B sends back the write data and the address information for write address designation to the stationary equipment A, which collates the write data to the transponder and address information for write address designation with the write data and address information for write address designation sent back from the transponder to confirm whether or not the transmission is surely made from the stationary equipment A to the transponder.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transponder code setting system for setting a specific code signal to a transponder having no power supply.

[0002]

2. Description of the Related Art Conventionally, there is a system in which a stationary machine provided in an automatic production line and a plurality of mobile machines equipped with tools are electromagnetically inductively coupled to each other so that signals can be transmitted and received in both directions. When a plurality of mobile devices are used, a fixed device can usually identify each mobile device by setting an individual ID code for each mobile device.

As a method of setting the ID code of each mobile unit, a jumper wire, a setting pin, a pattern cut, or an EP is used.
Those based on ROM are known.

[0004]

However, in the case of such a conventional example, in any case, it was necessary to incorporate a setting operation during the process of assembling the printed circuit board of the transponder.

However, since various code signals must be set, the setting work itself requires time and labor,
There is a drawback that the manufacturing efficiency of the transponder is reduced.

Further, in the manufacture, the code setting and the transponder obtained thereby must be made to correspond to each other, and after the manufacturing, those having the same set code are distinguished from each other. For example, if 64 types of codes are to be set, 64 types of shelves should be prepared and transponders should be stored according to each type, which makes management as a product difficult. There was a defect that it lacked mass productivity.

Therefore, it is conceivable that after the transponder is completed as a product, the code setting work is performed according to the order from the user side, but the whole is covered with a case to protect it from oil and dust. In the case of transponders, it is necessary to open the case when setting and close the case after setting, and it takes time and labor for setting work. There was a drawback to

In view of such circumstances, it is an object of the present invention to easily and surely set individual code signals in a transponder.

[0009]

A transponder code setting system according to the present invention is a code setting section in which a stationary machine sets a specific code signal having an oscillating circuit for generating a high frequency signal and an address section and a data section. And a first antenna coil that transmits a high-frequency signal on which the code signal is superimposed, and a transponder couples the first antenna coil by electromagnetic induction to generate an AC output, and the AC output. Demodulation means for demodulating and extracting the code signal; storage means for writing the demodulated code signal; and modulation means for reading the code signal from the storage means and modulating it for transmission from the second antenna coil, A rectifier circuit for converting the AC output into DC, and a DC charge converted by the rectifier circuit is accumulated to generate the accumulated charge. A configuration in which a capacitor is supplied to each of the demodulating means and the storage means and modulation means as a power source.

[0010]

According to this structure, the high frequency signal on which the specific code signal is superimposed is supplied to the first antenna coil of the fixed machine,
As a result, a magnetic field is generated in the first antenna coil, an AC output is generated from the second antenna coil of the transponder by the accompanying electromagnetic induction, the AC output is converted to DC by the rectifier circuit, and the DC charge is converted into a capacitor. The code signal superposed on the high frequency signal is extracted by the demodulation means of the transponder, and the code signal is written in the storage means of the transponder, whereby the code can be set. Further, the code signal set in this way is modulated by the modulation means and can be transmitted from the second antenna coil as a high frequency signal on which the code signal is superimposed.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. FIG. 1 is a circuit block diagram of a stationary machine A according to an embodiment of the present invention. The stationary machine A is fixedly installed on a side of a predetermined position on the tool movement path of an automatic production line in an unmanned factory or the like. In FIG. 1, reference numeral 1 is a first antenna coil, and a power supply unit 2 and a reception unit 3 for performing code setting and power supply are connected to the first antenna coil 1 via a coupling circuit 4.

In the power supply unit 2, an oscillator circuit (OSC) 5 for generating a high frequency signal, a code setting unit 6 for setting a specific code signal having an address section and a data section,
A modulation circuit 7 for modulating a code signal and an amplification circuit 8 for amplifying a high frequency signal on which the code signal is superimposed are provided.

The receiving section 3 includes an amplifier circuit 9, a demodulation circuit 10, a serial-parallel conversion circuit (SPC) 11 and a matching circuit 12.
Is equipped with.

The collating circuit 12 receives the code signal from the code setting section 6, compares the code signal with the code signal fed back from the transponder B side, which will be described later, to accurately determine the code signal. You can check whether it has been set.

FIG. 2 is a circuit block diagram of the transponder B according to the embodiment of the present invention. Although not shown, the transponder B is equipped with a tool. In FIG. 2, 13 is a second antenna coil that is coupled to the first antenna coil 1 by electromagnetic induction. The second antenna coil 13 includes a power receiving unit 14 and a code signal setting receiving unit 15. The transmitter 16 is connected via the switching circuit 17. The power receiving unit 14 and the transmitting unit 16 are connected via a switch circuit 18. Switching circuit 17
The switch circuit 18 is switched and controlled by the timing control circuit 19.

The timing control circuit 19 is an EPRO as a storage means for writing a code signal and setting a code.
M20 is connected. This timing control circuit 19
Controls data writing to the EPROM 20. As the storage means, in addition to the EPROM 20, PRO
Various modifications such as M are possible.

The power receiving unit 14 has a rectifier circuit 21 for converting the AC output from the second antenna coil 13 into DC, and a capacitor 22 for storing the DC charge.
It has and.

The receiving section 15 is provided with an amplifying circuit 23 and a demodulating circuit 24 as a demodulating means.

The transmission section 16 is provided with a modulation circuit 25 and an amplification circuit 26 as a modulation means.

Although not shown, the stationary machine A and the transponder B are both covered by a case made of a material such as brass or copper to protect them from oil and dust. The first antenna coil 1 and the second antenna coil 13 are magnetically coupled by approaching each other by, for example, about 5 mm.

FIG. 3 is a circuit diagram showing in detail the periphery of the switching circuit 17, the rectifying circuit 21, and the switching circuit 18 in the transponder B. In this figure, 27 is a second
A resonance capacitor for resonating with the antenna coil 13. In this configuration, the switching circuit 17 and the switching circuit 18 are controlled by the timing control circuit 19, the switching circuit 17 is switched, and the rectifying circuit 21 and the receiving unit 15 are switched.
Are connected to the second antenna coil 13, and the switch circuit 18 is opened.
The charge is accumulated in. At this time, the accumulated charge is basically the rectifier circuit 2 unless the switch circuit 18 is closed.
No leakage current except the leakage current from 1 and self-discharge.
On the other hand, by switching the switching circuit 17, the transmission unit 16 is connected to the second antenna coil 13 and the switching circuit 18 is closed so that a predetermined code signal can be transmitted by using the electric charge accumulated in the capacitor 22 as an operating power source. It has become.

Next, the operation of this embodiment will be described with reference to the time chart of FIG.

A specific code signal having an address part and a data part as shown in b set by the code setting part 6 is superimposed on the high frequency signal generated by the oscillator circuit 5 of the stationary machine A to modulate it. A signal as shown in a is obtained, and the high-frequency signal a is supplied to the first antenna coil 1 by the control means (not shown) at set time intervals to excite the first antenna coil 1. In the first antenna coil 1, a magnetic field corresponding to the above-mentioned high frequency signal a is generated, the second antenna coil 13 of the transponder B is electromagnetically coupled by this magnetic field, and the electromagnetic induction causes the second antenna coil 13 to shift to c. Generates an AC output as shown. This AC output c is converted into DC by the rectifier circuit 21 via the switching circuit 17,
A rectified output as shown in d is output.

The rectified output d is supplied to the capacitor 22, and the DC charge is stored in the capacitor 22. Further, the AC output c from the second antenna coil 13 is supplied to the amplifier circuit 2
In addition to the amplification by 3, the demodulation circuit 24 demodulates the original code signal as shown by e. When the amount of charge stored in the capacitor 22 exceeds a predetermined threshold level L, the timing control circuit 19 causes the EPROM as shown in f
A read / write signal (R / W signal) is output to 20 and predetermined data is written to a predetermined address of the EPROM 20 based on the code signal. The timing control circuit 19 controls the switching circuit 17 after a predetermined time elapses.
A timer output to each of the switch circuit 18 to switch the switching circuit 17 to connect the transmitter 16 to the second antenna coil 13, and switch the switch circuit 18 to supply the charge stored in the capacitor 22 to the transmitter 16. Then, using this as an operating power source, as shown in h, the EP
The code signal written in the ROM 20 is read and input to the modulation circuit 25, and the modulated signal g is amplified by the amplification circuit 2
The signal is amplified by 6 and supplied to the second antenna coil 13 to excite the second antenna coil 13.

In the second antenna coil 13, a magnetic field corresponding to the above-mentioned modulation signal g is generated, the first antenna coil 1 is electromagnetically coupled by this magnetic field, and the electromagnetic induction induces a magnetic field from the first antenna coil 1 to the modulation signal g. Generates a signal corresponding to. This signal is amplified by the amplification circuit 9, demodulated by the demodulation circuit 10, and then converted into a parallel signal by the serial-parallel conversion circuit 11, and then, in the collation circuit 12, the code setting unit 6
It is checked whether or not a predetermined code signal is written in the EPROM 20 by comparing with the code signal set in the above. The transmission of the code signal from the transponder B to the fixed device A is set to be performed in a time zone corresponding to the non-transmission of the high frequency signal from the fixed device A to the transponder B.

A tool is provided for each of the transponders B in which the specific code signal is written in this way, and the transponder B with the tool is placed on a predetermined transport path and provided separately (or. By reading the code signal of the transponder B sequentially conveyed by the code signal reading device (also used for the stationary machine A), it is possible to determine what kind of tool the transponder B is equipped with, and the determination Based on the result, a predetermined tool is selected and held by the holder to perform a predetermined processing operation.

The present invention is not limited to the above embodiment. For example, each of the first and second antenna coils 1 and 13 is not limited to the ferrite coil as shown in the figure, but a loop coil may be used. Further, it is also possible to prepare a large number of the transponders B and arrange them in a fixed manner, and move the stationary machine A side with respect to them. Further, the transponder B can be an IC card, and the stationary device A can be an IC card data reader.

[0028]

According to the present invention, the code signal can be set in the transponder after manufacturing. For example, the setting work can be performed in accordance with the request from the user side or the user side. ,
It has become possible to manufacture products of the same standard, omitting the setting work from the manufacturing process, and manufacturing can be done with less effort. Further, it is not necessary to prepare in advance many kinds of transponders having different code signals as in the case of setting in advance, and it is not necessary to store those having the same code signal separately from each other, which improves the manufacturing efficiency. In addition to being able to improve, management after manufacturing has become extremely easy.

Moreover, since the code signal can be set in a non-contact manner by electromagnetic induction, even if the transponder is entirely covered with a case, the case does not have to be opened and the code signal can be set after manufacturing. Hassle-free,
Moreover, the sealing performance is not impaired at all. In addition, even when the code signal is reset in an environment where there is a lot of oil and dust, it is possible to easily and favorably set the code signal without being disturbed by the oil and dust. Further, when the contact type is provided with the contact, there is a drawback that a contact failure is likely to occur due to mechanical abrasion or the above oil or dust, but according to the present invention, these defects can be avoided. , It became possible to improve durability as a whole.

[Brief description of drawings]

FIG. 1 is a circuit block diagram of a stationary machine according to an embodiment of the present invention.

FIG. 2 is a circuit block diagram of a transponder according to an embodiment of the present invention.

FIG. 3 is a circuit diagram of a main part of the transponder shown in FIG.

FIG. 4 is a time chart for explaining the operation of the fixed machine and the transponder.

[Explanation of symbols]

 A Fixed machine 1 First antenna coil of fixed machine 5 Oscillation circuit of fixed machine 6 Code setting part of fixed machine B Transponder 13 Second antenna coil of transponder 20 Transponder EPROM 21 Transponder rectifier circuit 22 Transponder capacitor 24 Transponder demodulation Circuit 25 Transponder modulation circuit

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[Procedure amendment]

[Submission date] April 8, 1994

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

Non-contact data setting device and communication system using the same

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-contact type data setting device that is electromagnetically coupled and a communication system using the same.

[0002]

2. Description of the Related Art Conventionally, there is a communication system having a fixed machine (master station) and a transponder (slave station) that are electromagnetically inductively coupled to each other to transmit and receive signals. The transponder has a separate I
By setting the D code, the fixed machine can identify each slave station.

As a method of setting the ID code of each transponder, a method using a jumper wire, a setting pin, a pattern cut, or an EPROM is known.

[0004]

However, in any of these conventional examples, it is necessary to incorporate setting work into the process of assembling the printed circuit board of the transponder. This setting work has a drawback that the setting work itself requires a lot of work such as setting various ID codes, and the manufacturing efficiency of the transponder is lowered. In addition, in manufacturing the transponder, the ID code setting and the transponder obtained thereby must be associated with each other, and after manufacturing,
Those having the same set ID code must be stored separately from other ones, which makes it difficult to manage as a product and lacks mass productivity. Furthermore, after completing the transponder as a product, it may be possible to carry out the code setting work according to the order from the user side, but in the case of a transponder that is entirely covered with a case to protect it from oil and dust, When the case is opened at the time of setting and the case is closed after the setting, there is a defect that a sealing failure occurs and the durability is unexpectedly reduced.

In this way, conventionally, the ID code of the transponder is simply set appropriately on the transponder side, and the fixed machine and the transponder are electromagnetically inductively coupled to each other so that the fixed machine can transfer any ID to the transponder.
There is no such thing as sending a D-code for storage in a transponder.

According to the present invention, not only the writing information such as an ID code is transmitted to and stored in the non-contact type response device which is a communication partner, but the contents of the writing information transmitted to the non-contact type response device can be confirmed. The task is to do so.

[0007]

A first non-contact type data setting device of the present invention transmits an electromagnetic wave for power supply in which writing information is superposed to a communication partner, and the contactless data setting device is provided to the communication partner. Antenna coil for electromagnetic induction coupling, setting means for setting writing information to be transmitted, and transmitting means for superposing the writing information set by the setting means on an electromagnetic wave for power supply and transmitting this from the antenna coil. After transmitting the signal from the setting means, the demodulating means for extracting the writing result from the feedback signal from the communication partner received by the antenna coil and the writing result extracted by the demodulating means and the corresponding writing information previously set by the setting means are compared. And a confirmation means for confirming whether or not the transmission is properly performed.

A second non-contact type data setting device of the present invention is to transmit an electromagnetic wave for power supply, to which a writing data and address information for designating the writing position are superimposed, to a communication partner. An antenna coil electromagnetically coupled to a communication partner, setting means for setting write data to be transmitted and address information for specifying the write position, write data set by the setting means and write position specifying the write data Of the address data of the power supply electromagnetic wave by superimposing it on the electromagnetic wave and transmitting it from the antenna coil, and after transmitting the signal from the setting means, the writing data and its writing from the feedback signal from the communication partner received by the antenna coil. Demodulation means for extracting address information for position designation, write data extracted by the demodulation means, and its write position It is provided with a confirming means for collating the designated address information with the corresponding writing data previously set by the setting means and the address information for designating the writing position to confirm whether or not the transmission is properly performed. .

The first communication system of the present invention comprises a non-contact type data setting device and a non-contact type responding device which are electromagnetically inductively coupled to each other to transmit and receive a signal, and the non-contact type data setting device. Is for transmitting an electromagnetic wave for power supply on which write information is superimposed, and the non-contact type response device receives an electromagnetic wave for power supply on which write information is transmitted, which is transmitted from a non-contact type data setting device. In addition to operating by obtaining operating power based on the received signal and storing write information, the stored write information is sent back to the non-contact data setting device side. The device also received the write information sent back from the non-contact type response device, collated it with the corresponding write information previously transmitted to the non-contact type response device, and was able to transmit properly. It is performed whether or not the confirmation.

A second communication system of the present invention comprises a non-contact type data setting device and a non-contact type responding device which are electromagnetically inductively coupled to each other to transmit and receive a signal, and the non-contact type data setting device. Is for transmitting an electromagnetic wave for power supply on which write data and address information for designating the write position are superimposed, and the non-contact type response device includes the write data and the write data transmitted from the non-contact type data setting device. It receives an electromagnetic wave for power supply on which address information for writing position designation is superimposed, obtains operating power based on this received signal to operate, and stores write data at a position designated by address information. The stored write data and its address information are sent back to the non-contact type data setting device side, and the non-contact type data setting device also includes The write data and its address information sent back from the contact type response device are received, and the received write data and the corresponding write data and the address information for specifying the write position previously transmitted to the non-contact type response device are collated. By doing so, it is confirmed whether or not the transmission was properly performed.

[0011]

The non-contact type data setting device of the present invention not only gives the operating power and the writing information to the non-contact type responding device side, but also sends the writing information returned from the non-contact type responding device in advance. By comparing with the information, it is possible to confirm whether or not the transmission was properly performed.

Further, not only the write data but also the address information for designating the write position of the write data is transmitted to the non-contact type response device to specify the write position to the non-contact type response device to obtain the required write data. It is supposed to be written.

The communication system of the present invention is a combination of the above-mentioned non-contact type data setting device and a non-contact type response device which is a communication partner of the non-contact type data setting device. The electric power is received from the non-contact type data setting device, the writing information received from the non-contact type data setting device is stored in the storage means as the operating power, and the writing information received from the non-contact type data setting device is also stored. Information is returned to the non-contact type data setting device side.

In the communication system, the write information may be write data and address information for designating the write position thereof.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on the embodiments shown in FIGS. In this embodiment, an example in which the non-contact type data setting device is the fixed machine A and an example in which the non-contact type response device is the transponder B are given,
Also, an example is given in which the write information is a code signal when the ID code is set from the fixed device A to the transponder B. The stationary machine A and the transponder B constitute a communication system.

FIG. 1 is a circuit block diagram of a fixing machine according to an embodiment of the present invention. The fixing machine A is provided at a predetermined position in the middle of a tool movement path of an automatic production line in an unmanned factory or the like, at a side of the side. It is fixedly installed. In the figure, 1 is a first antenna coil, and the first antenna coil 1 has
A power supply unit 2 and a reception unit 3 that perform code setting and power supply
And are connected via a coupling circuit 4.

The power supply unit 2 has an oscillator circuit (OSC) 5 for generating a high frequency signal, a code setting unit 6 for setting a specific code signal having an address section and a data section, and a code signal for modulation. A modulation circuit 7 and an amplification circuit 8 for amplifying a high frequency signal on which a code signal is superimposed are provided.
The code setting circuit 6 corresponds to the setting means in the claims, and the modulation circuit 7 and the amplifier circuit 8 correspond to the transmitting means in the claims.

The receiver 3 includes an amplifier circuit 9 and a demodulator circuit 1.
0, a serial-parallel conversion circuit (SPC) 11, and a matching circuit 12 as the confirmation means of the claims. The amplifier circuit 9 and the demodulation circuit 10 described above correspond to the demodulation means in the claims. The collating circuit 12 receives the code signal from the code setting unit 6, compares the code signal with the code signal that has been feedback-transmitted from the transponder B side, which will be described later, and determines whether the code signal is set correctly. You can check.

FIG. 2 is a circuit block diagram of a transponder according to an embodiment of the present invention. The transponder B is equipped with a tool (not shown). In the figure, 13 is a second antenna coil that is coupled to the first antenna coil 1 by electromagnetic induction.
Includes a power receiving unit 14 and a receiving unit 15 for setting a code signal.
And the transmission unit 16 are connected via a switching circuit 17. The power receiving unit 14 and the transmitting unit 16 include a switch circuit 18
Connected through. The switching circuit 17 and the switching circuit 18 are switching-controlled by the timing control circuit 19. The timing control circuit 19 sends an I signal to the EPROM 20.
Controls data writing such as D code. EPR
The OM 20 may be a non-volatile storage device such as a PROM.

The power receiver 14 is provided with a rectifier circuit 21 for converting the AC output from the second antenna coil 13 into DC, and a capacitor 22 for storing the DC charge. The receiving unit 15 includes an amplification circuit 23 and a demodulation circuit 24. The transmitter 16 includes a modulation circuit 25 and an amplification circuit 26.

Stationary machine A and transponder B described above
Although not shown, each is covered with a case made of a material such as brass or copper to protect it from oil and dust. The first antenna coil 1 and the second antenna coil
The antenna coil 13 is magnetically coupled by approaching the antenna coil 13 by, for example, about 5 mm.

FIG. 3 is a circuit diagram showing in detail the periphery of the switching circuit 17, the rectifying circuit 21, and the switching circuit 18 in the transponder B. In this figure, 27 is the second.
A resonance capacitor for resonating with the antenna coil 13. In this configuration, the switching circuit 17 and the switching circuit 18 are controlled by the timing control circuit 19, the switching circuit 17 is switched, and the rectifying circuit 21 and the receiving unit 15 are switched.
Are connected to the second antenna coil 13, and the switch circuit 18 is opened.
The charge is accumulated in. At this time, the accumulated charge is basically the rectifier circuit 2 unless the switch circuit 18 is closed.
No leakage current except the leakage current from 1 and self-discharge.
On the other hand, by switching the switching circuit 17, the transmission unit 16 is connected to the second antenna coil 13 and the switching circuit 18 is closed so that a predetermined code signal can be transmitted by using the electric charge accumulated in the capacitor 22 as an operating power source. It has become.

Next, the operation of this embodiment will be described with reference to the time chart of FIG. The high frequency signal generated by the oscillator circuit 5 of the stationary device A is set by the code setting unit 6 by b
A specific code signal having an address part and a data part as shown in FIG. 3 is superimposed and modulated to obtain a signal as shown in a, and the high frequency signal a is provided to the first antenna at set time intervals by the control means (not shown). The coil is supplied to the coil 1 to excite the first antenna coil 1. The first antenna coil 1 generates a magnetic field according to the high frequency signal a as described above,
This magnetic field electromagnetically couples the second antenna coil 13 of the transponder B, and the electromagnetic induction causes the second antenna coil 13 to generate an AC output as shown in c.
This AC output c is converted into DC by the rectifier circuit 21 via the switching circuit 17, and a rectified output as shown in d is output.

The rectified output d is supplied to the capacitor 22, and the DC charge is stored in the capacitor 22. Further, the AC output c from the second antenna coil 13 is supplied to the amplifier circuit 2
In addition to the amplification by 3, the demodulation circuit 24 demodulates the original code signal as shown by e. When the amount of charge stored in the capacitor 22 exceeds a predetermined threshold level L, the timing control circuit 19 causes the EPROM as shown in f
A read / write signal (R / W signal) is output to 20 and predetermined data is written to a predetermined address of the EPROM 20 based on the code signal. The timing control circuit 19 controls the switching circuit 17 after a predetermined time elapses.
A timer output to each of the switch circuit 18 to switch the switching circuit 17 to connect the transmitter 16 to the second antenna coil 13, and switch the switch circuit 18 to supply the charge stored in the capacitor 22 to the transmitter 16. Then, using this as an operating power source, as shown in h, the EP
The code signal written in the ROM 20 is read and input to the modulation circuit 25, and the modulated signal g is amplified by the amplification circuit 2
The signal is amplified by 6 and supplied to the second antenna coil 13 to excite the second antenna coil 13.

In the second antenna coil 13, a magnetic field corresponding to the above-mentioned modulation signal g is generated, the first antenna coil 1 is electromagnetically coupled by this magnetic field, and the electromagnetic induction induces a magnetic field from the first antenna coil 1 to the modulation signal g. Generates a signal corresponding to. This signal is amplified by the amplification circuit 9, demodulated by the demodulation circuit 10, and then converted into a parallel signal by the serial-parallel conversion circuit 11, and then, in the collation circuit 12, the code setting unit 6
It is checked whether or not a predetermined code signal is written in the EPROM 20 by comparing with the code signal set in the above. The transmission of the code signal from the transponder B to the fixed device A is set to be performed in a time zone corresponding to the non-transmission of the high frequency signal from the fixed device A to the transponder B. By the way, if the signal transmission from the fixed machine A to the transponder B is performed unilaterally as in the present invention, in the case where the magnetic coupling between the first and second antenna coils 1 and 13 is weak, the transponder B is used. Although it is feared that wrong code setting may be performed due to occurrence of bit loss in the received code signal, even if such a situation occurs, the present invention can grasp the situation by the confirmation operation, Appropriate code can be set, for example, it becomes possible to take measures such as retransmitting a signal.

A tool is provided for each of the transponders B in which the specific code signal is written in this way, and the transponder B with the tool is placed on a predetermined transport path and provided separately (or. By reading the code signal of the transponder B sequentially conveyed by the code signal reading device (also used for the stationary machine A), it is possible to determine what kind of tool the transponder B is equipped with, and the determination Based on the result, a predetermined tool is selected and held by the holder to perform a predetermined processing operation.

The present invention is not limited to the above embodiment. For example, each of the first and second antenna coils 1 and 13 is not limited to the ferrite coil as shown in the figure, but a loop coil may be used. Further, it is also possible to prepare a large number of the transponders B and arrange them in a fixed manner, and move the stationary machine A side with respect to them. Further, in the above-described embodiment, the write data and the address information for designating the write are the code signals when the ID code is set from the fixed device A to the transponder B. It goes without saying that it can be applied as address information for designating a writing position. In addition, the non-contact type data setting device can be an IC card data reading device in addition to the stationary device A, and the non-contact type responding device can be an IC card in addition to the transponder B.

[0028]

According to the first non-contact type data setting device of the present invention, the writing information is transmitted at the same time as the power supply to the communication partner, and it is confirmed whether or not the information can be written to the communication partner without fail. Thus, highly reliable transmission can be performed. As a result, the non-contact type response device, which is a communication partner, can have a structure that does not have an operating power source, and can simplify the structure of the communication partner and reduce the cost.

In the second non-contact type data setting device of the present invention, not only the write data but also the address information for designating the write position is transmitted to the communication partner, and the contactless data communication partner becomes the contact partner. Since it is possible to omit the configuration for addressing as the answering machine, it is possible to simplify the configuration of the communication partner and reduce the cost.

Further, in the communication system of the present invention, the signal received by the non-contact type response device is non-contact for some reason such as when the connection between the non-contact type data setting device and the non-contact type response device is weak. Even if the signal is different from the signal sent from the data setting device, this error can be grasped by the confirmation operation on the non-contact data setting device side. As a result, it is possible to perform highly reliable signal transmission.

When the ID information for the non-contact type response device is used as the writing information transmitted from the non-contact type data setting device of the present invention, the ID code of the non-contact type response device is arbitrarily set according to the user's request. Therefore, it is not necessary to provide a configuration for setting an ID code for each non-contact type response device as in the related art, and it is possible to save the labor of setting the ID code in the manufacturing process of the non-contact type response device. Therefore, for the manufacture of non-contact type response devices, it is sufficient to manufacture products of the same standard evenly.
In addition to contributing to the improvement of production efficiency, the manufacturing line and product storage management can be simplified, which will contribute to a significant cost reduction. Moreover, unlike the conventional case, it is not necessary to open the case of the non-contact type response device when setting the code, so that the sealing property and the durability are not deteriorated as in the conventional case, which contributes to the improvement of the product reliability. Like

[Brief description of drawings]

FIG. 1 is a circuit block diagram of a stationary machine according to an embodiment of the present invention.

FIG. 2 is a circuit block diagram of a transponder according to an embodiment of the present invention.

FIG. 3 is a circuit diagram of a main part of the transponder shown in FIG.

FIG. 4 is a time chart for explaining the operation of the fixed machine and the transponder.

[Explanation of Codes] A fixed machine (non-contact type data setting device) 1 first antenna coil of fixed machine 3 receiving section 5 oscillating circuit 6 code setting section 7 modulation circuit 8, 9 amplification circuit 10 demodulation circuit 12 matching circuit B transponder (Non-contact type response device)

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Claims (1)

[Claims] 1. A stationary machine, wherein an oscillator circuit for generating a high frequency signal, a code setting section for setting a specific code signal having an address section and a data section, and a high frequency signal superposed with the code signal are transmitted. A first antenna coil, wherein the transponder is coupled to the first antenna coil by electromagnetic induction to output an alternating current output;
Demodulation means for demodulating the AC output to extract the code signal, storage means for writing the demodulated code signal, the code signal read from the storage means, and modulated for transmission from the second antenna coil. Modulating means, a rectifying circuit for converting the AC output into DC, accumulating the DC electric charges converted by the rectifying circuit, and supplying the accumulated electric charges to the demodulating means, storage means and modulating means as operating power sources. The transponder code setting method is characterized in that it is provided with a capacitor.