KR200166385Y1 - A preventing installation for robbery - Google Patents

Abstract

The present invention relates to a device for preventing lost items, and relates to a lost property preventive device to efficiently prevent loss of things by performing two-way communication in which a mutual alarm function is performed at a predetermined distance between a user and a portable device.

The present invention for this purpose is an RF module for transmitting a frequency or receiving a specific frequency through the antenna; A modulator for transmitting an oscillation frequency to the RF module together with a transmission code; A demodulator for demodulating the frequency received by the RF module into a reception code; A controller configured to alternately enable the demodulator and the modulator so that transmission and reception are alternately performed and simultaneously control the system; The code demodulated by the demodulation unit is input to the control unit and a reception sensitivity measuring unit for measuring the reception sensitivity of the frequency received from the RF module, so that a pair of anti-theft devices are provided as a transmission / reception function, so that the user When one anti-theft device is installed in a bag, article, or electronic device desired and possesses the other, if the bag, article, or electronic device is separated from the user by a predetermined distance, both sides are warned between the lost object and the user, thereby preventing loss. It will be possible to improve.

Description

Anti-theft device {A PREVENTING INSTALLATION FOR ROBBERY}

The present invention relates to an apparatus for preventing a lost article, and more particularly, to a lost article preventive device to more efficiently prevent loss of things by performing a two-way communication in which a mutual alarm function is performed at a predetermined distance between the user and the portable device. It is about.

In general, in the rapid change of the times, a number of portable products including small electronic products are being developed and marketed. These portable goods are a lot of kinds of risk of loss, and as the risk is high, the situation is to develop a secondary article for preventing the loss. Such an anti-lost product includes a transmitter and a receiver. A user possesses a receiver and includes a transmitter in a portable device. The receiver, that is, a user may recognize an alarm frequency signal transmitted from the transmitter when a transmission / reception distance is more than a predetermined distance. Equipped with a system to help.

The conventional anti-lost device includes an oscillation device in a transmitter, and the receiver receives a frequency transmitted from the transmitter, measures a reception sensitivity, and determines a separation state between the transmitter and the receiver according to the measurement amount. Accordingly, when the receiver determines that the receiver is separated from the transmitter by a predetermined distance, that is, when the receiver sensitivity is less than the reference value, the alarm signal is output.

However, such a loss prevention transceiver is only a reception-oriented device having a unilateral transmission of a transmitter and a simple reception function of a receiver, and only a user, i. Had occurred. For example, even if the receiver is normally operated in a lost state of the belongings, there is a case in which it is necessary to maintain the lost state. Often, such an unavoidable situation occurs when the bus or public transportation is lost.

Therefore, the user is required to develop a device that can increase the efficiency of the prevention of lost and lost by the first warning display on the lost and lost itself.

The present invention was created to solve the above problems, and an object of the present invention is to prevent theft of the lost property itself and the receiver carried by the user before the loss of belongings to make different warning signs to increase the efficiency of the loss prevention In providing a device.

Anti-theft device according to an aspect of the present invention for achieving the above object, the RF module for transmitting a frequency or receiving a specific frequency through the antenna; A modulator for transmitting an oscillation frequency to the RF module together with a transmission code; A demodulator for demodulating the frequency received by the RF module into a reception code; A controller configured to alternately enable the demodulator and the modulator so that transmission and reception are alternately performed and simultaneously control the system; A decoder connected to the modulator or demodulator to decode a switching signal of a dip switch so that a code selected by a user through a dip switch can be modulated or demodulated; A serial output unit for converting the output signal of the decoder into a serial signal; A reception sensitivity measurement unit for measuring a reception sensitivity of a frequency received from the RF module while the code demodulated by the demodulation unit is input to the control unit; And a driver for selecting a warning mode such as vibration, lamp, and sound by outputting a control signal according to a corresponding mode when the reception level measured by the reception sensitivity measuring unit is determined by the controller and outputs a warning signal according to the determination result. Characterized in that made.

1 is a perspective view showing an embodiment of the product to which the function of the present invention is applied.

2 is a block diagram for explaining the function of FIG.

<Description of the code | symbol about the principal part of drawing>

201: RF module 203: demodulator

207: modulator 209: frequency generator

213: control unit 215: reception sensitivity measurement unit

217: driver 221: serial output unit

223: decoder 225: dip switch

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

1 is a perspective view showing an embodiment of the present invention. Referring to FIG. 1, an anti-theft device includes a transceiver having a heart-shaped accessory divided into two pieces, and the transceiver 101, 101 ', each having a single set of piezo speakers ( 107 and 107 'are provided, and battery display lamps 105 and 105' are provided.

In addition, the transmission and reception apparatuses 101 and 101 'are fastened to each of the rings 109 and 109' so as to be used as accessories.

After the anti-theft device configured as described above inputs an arbitrary code for transmitting and receiving, one of the transmitting and receiving devices is fastened to the belongings and carries the remaining one. At this time, when the belongings and the user are separated by a predetermined distance, a warning sound is generated in the transceiver 101 mounted on the belongings and the transceiver 101 'carried by the user.

Such a warning sound is generated only on one side according to the setting mode, and on the other side, the lamp may be flickered using the display lamps 105 and 105 ', and the vibration mode may be set.

The configuration of the anti-theft device described above is as follows.

2 is a block diagram of a system that is identically configured in a pair of anti-theft devices. The anti-theft device (101, 101 ') with reference to Figure 2 is an RF module 201 for transmitting a frequency or receiving a specific frequency through the antenna (ANT), and transmits the oscillation frequency to the RF module 201 with a transmission code A modulator 207, a demodulator 203 for demodulating the frequency received by the RF module 201 with a reception code, and alternately enable the demodulator 203 and the modulator 207 A code selected by the user through the dip switch 225 is modulated by being connected to the control unit 213 and the modulator 207 or the demodulator 203 to control transmission and reception alternately and simultaneously control the system. Alternatively, a decoder 223 for decoding the switching signal of the dip switch 225 and a serial output unit 221 for converting the output signal of the decoder 223 into a serial signal so as to be demodulated, and the demodulator 203. The demodulated code in the control unit 213 The control unit 213 determines the reception sensitivity measurement unit 215 for measuring the reception sensitivity of the frequency received by the RF module 201 and the reception level measured by the reception sensitivity measurement unit 215 at the same time. When the warning signal is output according to the determination result, the driver 217 outputs a control signal according to the corresponding mode.

The modulator 207 and the demodulator 203 are connected to a frequency generator 209 for generating a transmit / receive frequency, and on the input side of the controller 213, warning modes such as vibration, lamp, and sound (227, 229, 231). A mode setting unit 205 for selecting a is connected, and an output unit of the control unit 213 is provided with a display unit 211 for displaying the battery capacity of the system. An A / D converter 219 for converting and inputting the signal is connected.

Hereinafter, the operation of the anti-theft device 101, 101 'according to the above configuration will be described.

First, the user inputs a transmission code and a reception code through the dip switch 225. This is a code setting through the switch. Enter three or four digits depending on the hardware configuration. This code input is sent to the decoder 223 and converted into a substantial transmission signal. The serial output unit 221 and the frequency generator 209 convert the modulation signal of the modulator 207.

In addition, the output signal of the serial output unit 221 and the oscillation signal of the frequency generator 209 are input to the demodulator 203 and used as a tuning signal and a code of the reception frequency. At this time, the user sets the reception state mode using the mode setting unit 205. First, the vibration mode is performed by controlling the driver 217 by the switching signal of the mode setting unit 205 input to the control unit 213. 227, the lamp mode 229 and the sound mode 231 are selected.

When the initial setting is made, the anti-theft device 101 on one side is used as an accessory for the portable item, and the anti-theft device 101 'on the other side is carried by the user using a key ring or the like.

The anti-theft device 101 generates a transmission code corresponding to the code switched from the dip switch 225 through the decoder 223, and modulates the transmission code based on the serial output unit 221 and the frequency generator 209. Modulation by section 207 is performed. This is generated and radiated by the RF module 201, and the control unit 213 performs this transmission function only for a predetermined time, that is, a few mSec to several microSec.

When the transmission function for such a short time is terminated, the controller 213 controls the reception function through the demodulator 203 to be performed. The reception function is also a demodulation function of the current reception frequency based on the reception code switched from the dip switch 225 and the tuning frequency from the frequency generator 209. The code obtained through the demodulator 203 is transmitted to the controller 213.

In addition, at the same time as demodulation of the demodulator 203, the frequency received by the RF module 201 is input in parallel to the reception sensitivity measurement unit 215, and the reception sensitivity of the currently received frequency is measured to control the controller 213. To send).

That is, the anti-theft device 101 transmits a transmission code modulated at a predetermined frequency and receives a reception code from the anti-theft device 101 '. This mutual operation is performed simultaneously by a pair of anti-theft devices 101 and 101 '.

The control unit 213 determines whether the reception code obtained by the demodulation unit 203 is a reception code already set by the user, and receives the frequency from the other anti-theft device based on the signal input from the reception sensitivity measuring unit 215. Determine the state.

If the reception code obtained by the demodulator 203 is not correct, the current reception state is invalidated. If the reception code of the demodulator 203 currently received matches the reception code set by the user, the reception sensitivity measurement unit 215 is performed. Determine the reception level. At this time, if it is determined that the reception level detected by the reception sensitivity measurement unit 215 exceeds the reference value, the controller 213 outputs an enable signal to the driver 217. The driver 217 outputs a control signal to any one of the vibration mode 227, the lamp mode 229, and the acoustic mode 231.

Since this operation is performed simultaneously by a pair of anti-theft devices 101 and 101 ', both of the anti-theft devices 101 and 101' are warned that the driver 217 is enabled. Of course, such a warning is made according to the mode selected by the mode setting unit 205.

On the other hand, the anti-theft device (101, 101 ') can be used as an accessory of a predetermined group, after purchasing a plurality of anti-theft device (101, 101'), each of the transmission and reception code is set to the same as described above. Then, the output signal of the reception sensitivity measuring unit 215 is inverted. That is, the operation signal is generated when the operation signal generated when the distance between the mutual devices increases by a predetermined distance or less.

Then, when the group members gather within a predetermined distance through the accessories provided by the group members of the predetermined group, each of the accessories, that is, the plurality of anti-theft devices 101 and 101 'operates. As such, when the anti-theft device (101, 101 ') is to be used as a pair, it can be used for anti-theft, and when a large number is purchased and used as a group, it can be used as an accessory of a group to bond between groups. You can strengthen it.

The present invention described above is to provide both a pair of anti-theft device as a transmission and reception function, after mounting one anti-theft device in the bag or article or electronic device desired by the user and holding the other, the bag or article Alternatively, when the electronic device is separated from the user by a predetermined distance, the pair of anti-theft devices simultaneously generate an alarm sound, an alarm lamp, or a vibration, so that both sides of the lost object and the user are alerted, thereby improving the loss prevention effect.

In addition, the anti-theft device can be used as a kind of accessories can be used and installed more efficiently and at the same time achieve the effect of improving the aesthetics.

Claims (1)

In the anti-theft device, An RF module 201 for transmitting a frequency or receiving a specific frequency through the antenna ANT; A modulator 207 for transmitting an oscillation frequency to the RF module 201 together with a transmission code; A demodulator 203 for demodulating the frequency received by the RF module 201 into a reception code; A control unit (213) for alternately enabling the demodulator (203) and the modulator (207) to alternately transmit and receive and simultaneously control the system; A decoder 223 connected to the modulator 207 or the demodulator 203 to decode the switching signal of the dip switch 225 so that a code selected by the user through the dip switch 225 can be modulated or demodulated; A serial output unit 221 for converting the output signal of the decoder 223 into a serial signal; A reception sensitivity measurement unit (215) for measuring the reception sensitivity of the frequency received by the RF module (201) while the code demodulated by the demodulation unit (203) is input to the control unit (213); And When the reception level measured by the reception sensitivity measurement unit 215 is determined by the control unit 213 and outputs a warning signal according to the result of the determination, a warning signal such as vibration, lamp, and sound is output by outputting a control signal according to the corresponding mode. An anti-theft device comprising a driver 217 for selecting (227, 229, 231).