KR200295365Y1 - A warning device of the loss of wallet using RF ID - Google Patents

Abstract

The present invention relates to a wallet loss prevention device, and more particularly, to a wallet loss warning device using an RF ID to ring the wallet implementation warning sound using the RF reader and RF Tag.

Powered by a small battery and emits an RF wave through the coil antenna, RF modulated and transmits a power and a unique number to the RF carrier, and demodulates and transmits the RF power containing the unique number from the RF tag. A belt equipped with an RF reader that determines whether the identification number is identical, and the carrier part of the RF power is rectified from the RF reader to generate DC power. The circuit is used to drive a circuit inside the RF tag. After filtering, extract the information and match the built-in program number, RF Power is composed of a wallet with an RF tag that transmits RF Power along with a unique number to the RF reader, and after the RF reader transmits RF radio waves, If the signal of the same unique number is not received from the RF tag consisting of a warning device for generating a warning sound It features.

The present invention provides a relatively large RF reader device in the belt and a passive type RF tag device in the wallet, which generates a warning sound when the wallet is lost, and prevents the loss and installs the RF reader in the belt. It is effective to prevent the loss of the wallet without inconvenience. In addition, by using a different unique number for each wallet can provide the effect that several people can use the same device, and by mounting the RF tag of the same unique number to multiple devices that are easy to lose, using a single RF reader It is also effective to prevent loss.

Description

A warning device of the loss of wallet using RF ID}

The present invention relates to a device for preventing a wallet loss, and more particularly, to an apparatus for making a wallet implementation warning sound using an RF tag.

As the economic population and the floating population increase, the number of contacts for each person increases, and various problems are exposed. In particular, when using the full-time bus or the subway during the rush hour during commute, the number of physical contact with others increases, and the loss of personal belongings is also frequent.

In addition, personal wallets are filled with various credit cards and various types of identification cards, which are necessary for social activities, so the loss of these wallets is personally notified of the inconvenience of economic activities due to the loss of various necessities. This causes serious side effects in that time and cost can be lost and social can be the cause of various crimes.

In general, in order to prevent the loss of the wallet, it is common to keep the wallet in a secret place of the body or carry a separate storage box. However, the method of storing in a secret place has the effect of storage but inconvenient when using it, and the case of the storage box can not be a fundamental solution because the loss of the storage box itself occurs.

The present invention is to provide a device for preventing the loss of wallet to solve the above problems, and in particular to provide a device for the purse warning sound ringing using the RF Tag.

As a preferred embodiment of the wallet loss warning method using the RF ID according to the present invention for achieving the above object

Powered by a small battery and transmits an RF wave through the coil antenna, and transmits RF modulated power and unique number to the RF carrier, and demodulates it when RF power bearing the unique number is received from the RF tag. A belt equipped with an RF reader that determines whether the identification number is identical, and the carrier part of the RF power is rectified from the RF reader to generate DC power. The circuit is used to drive a circuit inside the RF tag. After filtering, extract the information and match the built-in program number, RF Power is composed of a wallet with an RF tag that transmits RF Power along with a unique number to the RF reader, and after the RF reader transmits RF radio waves, If the signal of the same unique number is not received from the RF tag is made of a warning device for generating a warning sound It features.

1 is a block diagram showing an embodiment of the present invention

<Description of the symbols for the main parts of the drawings>

10: RF reader 11: antenna

20: RF modulator 30: RF oscillator

40: controller 50: unique number memory device

60: warning sound generator 70: speaker

90: belt 100: RF tag device

101: wallet 110: tag antenna

120: RF rectifier circuit 130: controller

140: unique number memory device 150: RF modulation and demodulation

160: signal processing unit

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First, the general communication between a conventional RF tag and a base station and a form of technical development will be described. Conventional RF Tags are known to identify and identify the locations of tagged objects in a stationary or moving state, and to transmit information about the status of those objects. Al since the early 1960s. In US Patent No. 3,098,971 to R. M. Richardson, it is known that electronic devices on a transponder can be powered by RF power transmitted by a base station at a carrier frequency and received by an antenna on a tag. The signal extracted by the tag antenna induces an alternating current that can be rectified by the RF diode to the antenna and the rectified current can be used for the power supply of the electronic device. The tag antenna loading is changed by something to be measured, for example the microphone resistance of the patent. Thus, the oscillating current induced in the tag antenna from the incoming RF energy will change, and this change in the oscillating current causes the RF power radiated from the tag antenna to change. This change in power radiated from the tag antenna can be taken out by the base station antenna so that the microphone can effectively distribute the power without itself having a built-in power supply. In this patent, the antenna current oscillates at the harmonic of the carrier frequency because the diode current contains a frequency component that is doubled, and this frequency can be extracted and picked up from the carrier frequency much more easily than just reflected. have. Since this type of tag does not have its own power source, it is called a passive tag to distinguish it from an active tag containing a battery. The battery supplies energy to spread the information from the tag antenna. The active tag can also change the loading on the tag antenna to send information to the base station.

In the 1970s, it was proposed to use tags with logic and read / write memory. In this way, the tag could be used to measure the animal's temperature, as well as to identify the animal, in several properties, for example in US Pat. No. 4,075,632 to Baldwin et al. Antenna load is varied by transistors. Transistor switch is a. The loading of transponders was also changed in US Pat. No. 4,786,907 to A. Koelle.

The combination of a diode rectifier circuit and a balanced modulator that modulates the antenna current at twice the carrier frequency is Gerrit. Proposed in US Pat. No. 4,724,427 to Gary T. Carroll.

Prior art tags utilize electronic logic, memory circuitry, receiving circuitry, and modulation circuitry to receive information from the base station and to transmit information from the tag to the base station.

The continued advances in semiconductor technology for smaller, faster, and lower power have resulted in significant increases in functionality and the price of such tags. Currently available research and development technologies will also enable new functionality and a variety of products in communication technology. The range of communication distances from the base station to the tag is important. This range is determined by the voltage formed by the antenna on the tag and the rectifier circuit. first. In order to power the device on the tag, a stable supply voltage is extracted from the modulated RF field, and then a data signal with well defined zeros and ones for use of the tag digital electronics is recovered from the modulated RF field. In addition, the information receiving section of the RF tag draws power from a main power capacitor supplying power to the tag when no RF power is transmitted from the base station. In addition, the RF tag is divided into an active type that has its own internal power and a passive type that generates the power required to drive the internal circuit from the RF input from the antenna. There is.

This paper intends to use the general communication between the RF base station and the RF tag as described above, and to apply the technology using the passive type RF tag to the belt and wallet.

1 is a block diagram showing an embodiment of the present invention, as shown in the drawing, the RF reader 10 is installed in the belt 90, and the wallet 101 has a built-in RF tag device 100 to transmit and receive data with each other. It is configured to do so. The RF reader 10 demodulates a signal received from the coil antenna 11 and the coil antenna 11 to transmit and receive a signal to the controller 40 and modulates a signal received from the controller 40 to modulate the coil antenna. RF modulator 20 is connected to each other so as to output to the (11), the RF oscillator 30 used when the received RF signal to the IF signal (intermediate frequency signal) is the RF modulator 20 Is connected to. In addition, the controller 40 is connected to the RF modulation and demodulation block 20 to transmit and receive a signal is connected to a memory device 50 that stores a unique number and generates a warning sound receiving the output of the controller 40 The unit 60 and the speaker 70 are connected. Preferably, when the controller 40 can store a plurality of unique numbers in the storage device 50, it is economical because the RF tag device 100 having different unique numbers can be used as one RF reader 10. . On the other hand, the RF reader 10 can be supplied with power by a small battery or a separate power supply (not shown). In addition, the wallet 101 is provided with an RF tag 100, the RF tag device 100 is connected to the tag antenna 110 and the RF rectifier 120 and the RF modulator 150 to transmit and receive a signal and the RF The power line output from the rectifier 120 is connected to supply power to the tag controller 130 and various components. In addition, the tag controller 130 is connected to a storage device 140 that stores a specified unique number, and the RF modulation and demodulation unit 150 is connected to the signal processor 160 connected to communicate with the control unit 130; Are interconnected.

Hereinafter, the operation of the wallet loss warning system using the RF ID according to an embodiment of the present invention will be described.

In the case of carrying the wallet 101 equipped with the RF reader 10 in the wallet loss warning system using the RF ID and carrying the wallet 101 with the RF tag device 100 attached thereto, the RF reader 10 is periodically unique. Send a number confirmation signal and periodically check whether the received unique number matches the transmitted number. That is, the controller 40 reads the unique number from the unique number memory device 50 at a predetermined time and outputs the unique number to the RF modulator 20 to transmit the information to the RF tag device 100 through the coil antenna 11. Done. The controller 40 checks whether the RF tag signal is received from the RF tag device 100 through the antenna 11 and the RF modulator 20 after a predetermined time elapses. If different from the data, the controller 40 generates a warning sound so that the warning sound is output to the speaker 70 through the warning sound generating unit 60. In this case, the wallet holder may recognize the lost fact of the wallet 101 and take appropriate measures. If the data received from the RF tag apparatus 100 in this process matches the data transmitted, the process is terminated and the unique number confirmation signal is periodically transmitted again.

At this time, when the tag antenna 110 receives the unique number confirmation signal from the RF reader 10, the RF tag device 100 receives the received signal into the RF rectifier circuit 120 and the RF rectifier circuit 120 receives the received signal. The DC power is rectified and stabilized to generate a DC power, and the generated DC power activates the controller 130 and other components. The activated RF demodulation unit 150 receives the received signal and outputs the demodulation process to the signal processor 160. The signal processor 160 classifies data from the transmission signal to the controller 130. Send the data. At this time, the controller 130 compares the unique number stored in the unique number memory device 140 with the transmitted unique number data, and in the case where the controller 130 reads the unique number from the unique number memory device 140, the signal processor 160. The signal processor 160 outputs a signal that can be modulated by performing a signal processing such that the RF modulator 150 transmits an RF signal including the unique number information through the tag antenna 110. Will output to 150. On the other hand, when the transmitted unique number data and stored unique number data is different, it is determined that the third RF reader outputs a signal and does not perform a corresponding operation.

Since the RF tag device 100 can be installed in a plurality of devices while using the same RF reader 10, it is preferable to attach the RF tag device 100 to various items such as a bag as well as a wallet 101.

In addition, the RF tag device 100 may have the same operation or effect even if it is installed in a mobile phone having a large number of personal use in recent years, in addition to the wallet 101, and has a plurality of RFs having the same unique number. The tag device 100 and one RF reader 10 may be used for various devices that are easy to be lost, and conversely, a plurality of unique numbers may be set and managed in the RF reader 10 so that the unique numbers are mutually different. It is also preferable to use a plurality of different RF tag device 100 as one RF reader (10).

As described above, this subject matter has been described in detail only with respect to the described embodiments, but it is apparent to those skilled in the art that various modifications and changes are possible within the technical spirit of the present invention, and such modifications and modifications belong to the appended claims. will be.

The present invention provides a relatively large RF reader device in the belt and a passive type RF tag device in the wallet, which generates a warning sound when the wallet is lost, and prevents the loss and installs the RF reader in the belt. It is effective to prevent the loss of the wallet without inconvenience. In addition, by using a different unique number for each wallet can provide the effect that several people can use the same device, and by mounting the RF tag of the same unique number to multiple devices that are easy to lose, using a single RF reader It is also effective to prevent loss.

Claims (2)

Powered by a small battery and emits an RF radio wave through the coil antenna 11, the RF carrier modulated by the RF modulator 20 transmits the power and the unique number of the unique number memory device 50 to the RF carrier and RF When the RF device carrying the unique number is received from the tag device 100, it is demodulated by the RF demodulation unit 20 to determine whether it matches the transmitted unique number and the controller 40 for controlling the system has an embedded RF reader ( 10) equipped with a belt 90; and The carrier portion of the RF power from the RF reader 10 is rectified by the RF rectifier circuit 120 to generate a DC power, using the power to drive the circuit inside the RF tag device 100, the signal portion of the RF power A purse 101 attached to the RF tag device 100 which extracts information by filtering and transmits the RF power to the RF reader 10 together with the unique number if it matches the unique number embedded in the unique number memory device 140; and A warning device (60) for generating a warning sound when the RF reader device (10) transmits an RF signal and does not receive a signal having the same unique number from the RF tag device (100) after a predetermined time elapses; Wallet loss warning device using an RF ID, characterized in that made The device of claim 1, wherein the unique number memory device (50) stores a plurality of unique numbers.