KR200171616Y1 - Alarm device for missing of wireless communicator - Google Patents

Abstract

The present invention relates to a wireless communication device loss alarm,

An encoder unit 11 for generating a predetermined signal encrypted when a voltage is input, a first amplifier unit 12 for amplifying a signal generated by the encoder unit 11, and an amplification unit in the first amplifier unit 12 A transmission unit (1) configured to transmit the received signal at a predetermined transmission frequency through an antenna and attached to one end of the wireless communication device;

A second amplifier 21 for amplifying a signal received through an antenna, a tuner 22 for detecting only a frequency of a desired band from the signal amplified by the second amplifier 21, and the tuner 22 A third amplifying unit 23 for amplifying the signal detected by the signal, an OP amplifier 24 for finally amplifying the signal output from the third amplifying unit 23, and a signal output from the OP amplifier 24. Receiving means comprising a decoder 25 for reading out and outputting a predetermined control signal in accordance with the reading result, and an alarm unit 26 for driving the control signal output from the decoder 25 to output a predetermined alarm sound ( 2);

The present invention relates to a wireless communication device loss alarm device that prevents a user from losing a wireless communication device while preventing the user from falling over a predetermined distance from the wireless communication device.

Description

Wireless communication device loss alarm

The present invention relates to a wireless communication device loss alarm device, and in particular, a transmission means for transmitting a predetermined frequency signal attached to the wireless communication device, and reading a frequency signal input from the transmission means and the frequency signal is read as a result. A wireless communication device loss alarm device configured to receive a predetermined alarm sound when the unreadable state prevents the user from losing the wireless communication device by a certain distance from the wireless communication device. will be.

In modern times, the development of information and communication technology has enabled many people to talk to their opponents without restriction on their location by using wireless communication devices (such as cellular phones and PCS).

However, in the related art, since a separate device for informing the user to prevent the loss of the wireless communication device has not been provided, the wireless communication device is lost due to the user's carelessness or lost due to the intentional theft of others. There was a problem of property damage.

As such to prevent the loss of the wireless communication device, there is provided a separate case or a strap that is coupled to a certain position of the wireless communication device to allow the user to carry the wireless communication device at all times, but also due to the carelessness of the user There was a problem that can not expect a very different effect on the loss of the wireless communication device.

Therefore, the present invention for solving the above problems is a transmission means for transmitting a predetermined frequency signal, which is attached to a wireless communication device, and reads a frequency signal input from the transmission means, and as a result the frequency signal is unreadable. In order to provide a wireless communication device loss alarm device so that the user does not lose the wireless communication device by setting the receiving means for outputting a predetermined alarm sound so that the user does not fall over a certain distance from the wireless communication device. do.

1 is a schematic view showing a loss alarm device of the present invention.

Figure 2 is a block diagram showing a loss alarm device of the present invention.

3 is a circuit diagram showing a transmission means applied to the present invention.

Figure 4 is a circuit diagram showing a receiving means applied to the present invention.

5 is a waveform diagram showing the reception characteristics of the present invention.

6 is a view showing a state in which the transmission means of the present invention is applied.

※ Explanation of code for main part of drawing

1: transmitting means 2: receiving means

11: encoder 13: transmitter

22: tuning unit 24: OP amplifier

25 decoder 26 alarm

251: Password Detector 252: Comparator

253: memory 261: alarm sound generator

The present invention for achieving the above object,

An encoder which generates a predetermined signal encrypted when a voltage is input, a first amplifier which amplifies the signal generated by the encoder, and a signal amplified by the first amplifier at a predetermined transmission frequency through an antenna Transmitting means including a transmitting unit for transmitting;

A second amplifying unit for amplifying a signal received through an antenna, a tuning unit for detecting only a frequency of a desired band from the signal amplified by the second amplifying unit, a third amplifying unit for amplifying a signal detected by the tuning unit, and An OP amplifier for finally amplifying the signal output from the third amplifier, a decoder for reading the signal output from the OP amplifier and outputting a predetermined control signal according to the read result, and a control signal output from the decoder. Receiving means configured to include an alarm unit driven by and outputting a predetermined alarm sound;

Characterized in that consisting of.

The decoder compares a cipher detector for detecting only a cipher portion from an input signal, a memory storing a reference cipher to be compared, a cipher detected from the cipher detector and a reference cipher stored in the memory and the same as the comparison result. If it does not or does not detect a password, it is characterized by consisting of a comparator for outputting a low signal.

The encoder and the reference password stored in the memory are the same.

Hereinafter, a preferred embodiment of the present invention with reference to the accompanying drawings, Figures 1 to 6 are as follows.

1 to 6 shows an embodiment of the present invention, Figure 1 is a schematic diagram showing a loss alarm device of the present invention, Figure 2 is a block diagram showing a loss alarm device of the present invention, Figure 3 is A circuit diagram showing a transmission means applied to the present invention.

And, Figure 4 is a circuit diagram showing a receiving means applied to the present invention, Figure 5 is a waveform diagram showing the reception characteristics of the present invention, Figure 6 is a view showing a state in which the transmission means of the present invention is applied.

According to the drawings, the present invention is roughly composed of a transmitting means (1) and a receiving means (2).

The transmitting means 1 outputs an encrypted predetermined frequency signal, the encoder unit 11 generating an encrypted predetermined signal when a voltage is input, and an amplifying signal generated by the encoder unit 11. The first amplifier 12 and the transmission unit 13 for transmitting the signal amplified by the first amplifier 12 to a predetermined frequency to transmit through the antenna ANT1.

The encoder 11 generates a predetermined password of 12 bits, and generates a predetermined password set by the user.

As shown in FIG. 3, the encoder unit 11 is one chip, and 18 input / output pins P1 to P18 are formed, and a 12-bit signal encoded by pin 17 is output.

The cipher output from the encoder 11 is amplified by the first amplifier 12, mixed with a predetermined frequency generated by the transmitter 13, and transmitted through the antenna ANT1.

As shown in FIG. 3, the first amplifier 12 is implemented as a transistor Q1, and the transmitter 13 is implemented by a coil L1 and a capacitor C1 and C2 having an oscillation function. The amplified code is transmitted through the antenna ANT1 in the frequency band according to the inductance value L of the coil L1 and the capacitance value C of the capacitors C1 and C2.

In addition, a switch SW1 for supplying or cutting off the power supply Vcc is configured to allow a voltage to be supplied or cut off to each component of the transmission means 1 as the user turns on / off the switch SW1. .

The non-explained reference numeral D1 is a light emitting diode which indicates to the user that the transmitting means 1 is normally driven when the password is normally transmitted through the antenna ANT1 and emits a predetermined light. Is a diode, R1 to R6 are resistors, and C3 to C5 are capacitors.

On the other hand, the receiving means 2 is tuned to detect only the frequency of the desired band from the signal amplified by the second amplifier 21, the second amplifier 21 for amplifying the signal received through the antenna ANT2 A section 22, a third amplifier 23 for amplifying the signal detected by the tuning section 22, an OP amplifier 24 for finally amplifying the signal output from the third amplifier 23, and And a predetermined alarm sound driven by the decoder 25 which reads the signal output from the OP amplifier 24 and outputs a predetermined control signal according to the read result, and a control signal output from the decoder 25. It consists of an alarm unit 26 for outputting.

The second amplifier 21 is composed of transistors Q11 and Q12 so that the signal received from the antenna ANT2 is amplified by the transistors Q11 and Q12.

The tuning unit 22 is implemented as a tank coil TL, coils L11 and L12, and capacitors C11 to C15. C13 and C14, the tank coil TL and the condenser C15 each have a pair to detect a specific frequency (frequency of the signal transmitted from the transmitting means), and the tank coil TL has an inductance (L). The value can be finely adjusted by the user so that the frequency band detected by the tuning unit 22 can be accurately matched to the frequency of the signal transmitted from the transmission means 1.

As described above, the reason why the detection operation is performed in the multiple stages is to more accurately detect the signal transmitted from the transmission means 1.

That is, the tuning unit 22 detects only a specific frequency band, that is, a transmission frequency output from the transmitting unit 13, among many frequency signals received through the antenna ANT2.

On the other hand, the third amplifier 23 is implemented as a transistor (Q13) for amplifying a predetermined value of the signal detected by the tuning section 22, the OP amplifier 24 is a one-chip element in the transistor (Q13) The amplified signal was finally amplified.

The decoder 25 includes an encryption detector 251 that detects only an encrypted portion of an input signal, a memory 253 that stores a reference password to be compared, and an encryption and memory detected by the encryption detector 251. Comparing the reference password stored in the (253) and if the comparison result is not the same or if the detected password is not recognized by the comparator 252 for outputting a low signal.

That is, the cipher detector 251 detects and outputs only the cipher portion from the signal input from the OP amplifier 24, and the comparator 252 stores the cipher detected in the cipher detector 251 in the memory and the memory 253. When the two ciphers are not identical to each other, the low signal is outputted. If the two ciphers are identical, the high signal is outputted.

The comparator 252 outputs a low signal even when the cipher detector 251 does not detect the cipher portion, and when the cipher detector 251 fails to detect the cipher portion, The signal received by the receiving means 2 is attenuated when the distance of the receiving means 2 drops by more than a predetermined distance, so that the cipher detector 251 cannot detect the cipher portion.

That is, since the reception sensitivity of the reception means 2 is inversely proportional to the distance from the transmission means 1 as shown in FIG. 5, the reception sensitivity of the reception means 2 is reduced when the transmission means 1 is separated by a predetermined distance K or more. It is attenuated to a certain value M so that the password cannot be read by the password detector 251.

The reference password stored in the memory 253 is set equal to the password generated by the encoder 11 of the transmitting means 1 to determine whether the signal received by the receiving means 2 is the signal transmitted by the transmitting means 1. Make sure you can accurately judge

On the other hand, the alarm unit 26 is a transistor (Q14) for the on / off switching operation by the high or low signal output from the comparator 252 of the decoder 25, and the on operation when the transistor (Q14) off operation And an alarm sound generator 261 that outputs a predetermined alarm sound by a voltage input during the on-operation of the diode D11.

That is, when the high signal is output from the comparator 252 of the decoder 25, the transistor Q14 is turned on so that the diode D11 is turned off so that the power supply Vcc is grounded through the transistor Q14. When the low signal is output from 252, the transistor Q14 is turned off and the diode D11 is turned on so that the power supply Vcc is supplied to the alarm sound generator 261 through the diode D11, thereby providing a predetermined alarm. The sound will be output.

Reference numeral L13 denotes a coil, C16 to C24 are capacitors, R11 to R25 are resistors, and SW2 is a switch that supplies or cuts power to each component of the receiving means 2.

In addition, the above-described transmitting means 1 may be manufactured in a small size as shown in FIG. 6 so as to be coupled to a portion of the connection string formed in the wireless communication device so as not to fall off from the wireless communication device. The receiving means 2 is made small so that it can be combined with a key ring and the like so that the user can carry it at all times so that a predetermined alarm sound is received from the receiving means 2 when the wireless communication device is separated from the user by a predetermined distance or more. It is desirable to cause it to occur.

Referring to the operation and effects of the present invention configured as described above are as follows.

First, when the user turns on both the switches SW1 and SW2 of the transmitting means 1 and the receiving means 2, power is supplied to each component of the transmitting means 1 and the receiving means 2, thereby operating normally. Done.

That is, the encoder 11 of the transmission means 1 generates and outputs a predetermined cipher of 12 bits, and the transistor Q1 constituting the first amplifying part 12 receives the cipher output from the encoder 11. The amplifier L1 and the capacitors C1 and C2 constituting the transmitter 13 generate a constant frequency, and amplify the cipher amplified by the transistor Q1 to the antenna ANT1. Send via).

As described above, when the radio wave is normally transmitted through the antenna ANT1 of the transmitting means 1, the light emitting diode D1 is turned on so that the user knows that the transmitting means 1 is operating normally.

On the other hand, the receiving means 2, the user is operating the switch (SW2) and at the same time the driving power is supplied to each component to receive radio waves of various frequencies through the antenna ANT2.

The radio wave received by the antenna ANT2 is amplified by the transistors Q11 and Q12 constituting the second amplifier 22, and the coil is in the process of being amplified by the transistors Q11 and Q12. Only the radio waves of the predetermined frequency band transmitted from the transmission means 1 among the radio waves supplied to the tuning section 22 composed of (L11, L12) (TL) and condensers C11 to C15 and received via the antenna ANT2. This is detected.

At this time, the frequency band used in the transmitting means 1 and the receiving means 2 is to use a separate frequency band other than the frequency band used in the general wireless communication device so that the device and the wireless communication device of the present invention frequency interference Do not cause it.

Meanwhile, the signal detected by the tuning unit 22 is supplied to the transistor Q13, which is the third amplifier 23, is amplified again and then supplied to the OP amplifier 24, and the OP amplifier 24 is The signal input from the transistor Q13 is finally amplified and output to the cryptographic detector 251 of the decoder 25.

The encryption detector 251 of the decoder 25 detects only the encryption portion from the signal output from the OP amplifier 24 and outputs it to the comparator 252, and the comparator 252 is previously stored in the memory 253. A cipher, i.e., a cipher generated in the encoder 11 of the transmission means 1, and a cipher detected in the cipher detector 251, and a high or low signal is outputted according to the comparison result. Output to (Q14).

In addition, the comparator 252 outputs a high signal to the alarm unit 26 even when the encryption part is not detected by the encryption detector 251.

That is, when the high signal is output from the comparator 252, the radio wave transmitted from the transmitting means 1 is correctly received by the receiving means 2, that is, the distance between the transmitting means 1 and the receiving means 2 Is within an appropriate distance, the transistor Q14 of the alarm unit 26 is turned on by the high signal output from the comparator 252, so that the power supply Vcc is not supplied to the alarm sound generator 261 and the transistor ( It is grounded through Q14) and no alarm sound is output.

On the other hand, when the low signal is output from the comparator 252, the radio wave transmitted from the transmitting means 1 is not correctly received by the receiving means 2, that is, the transmitting means 1 and the receiving means 2 The distance between them is out of the proper distance, the power supply (Vcc) through the diode (D11) the alarm sound generator as the transistor (Q14) of the alarm unit 26 is turned off by the low signal output from the comparator 252. 261, a predetermined alarm sound is output.

When the alarm sound is output from the alarm sound generator 261, the user recognizes that the wireless communication device owned by the user is a certain distance away from the user and finds again so that the loss of the wireless communication device can be prevented in advance. will be.

In other words, the reception sensitivity characteristic between the transmission means 1 and the reception means 2 applied to the present invention is inversely proportional to the distance as shown in FIG.

Therefore, when the transmitting means 1 attached to the wireless communication device is separated from the receiving means 2 by a predetermined distance K, the receiving sensitivity of the receiving means 2 is attenuated to an extent that the password cannot be read (M). As the decoder 25 of the receiving means 2 cannot read the password, a predetermined alarm sound is output from the alarm unit 26.

In addition, if the amplification ratio of each amplification means applied to the present invention is increased, the proper transmission / reception distance (K) of the transmission means (1) and the reception means (2) can be increased, and the scope of application of the present invention is only for wireless communication devices. The present invention is not limited thereto, and can be applied to portable products (eg, laptop computers, bags, etc.) or children, so that a great effect can be expected to prevent loss and loss of valuables.

As described above, the present invention provides a transmission means for transmitting a predetermined frequency signal, which is attached to a wireless communication device, and reading a frequency signal inputted from the transmission means, and if the frequency signal is unreadable, the predetermined means It is a wireless communication device loss alarm device configured to receive a warning means for outputting the alarm sound so that the user does not fall over a certain distance from the wireless communication device, so that the user does not lose the wireless communication device.

Claims (4)

A transmission means (1) attached to a specific portable device and transmitting an encrypted predetermined frequency signal; Receiving means for reading a frequency signal input through the antenna and outputting a predetermined alarm sound when a cipher transmitted by the transmitting means 1 is not detected or a cipher other than the cipher transmitted by the transmitting means 1 is detected ( 2), Wireless communication device loss alarm, characterized in that consisting of. The method of claim 1, The transmitting means 1 includes an encoder section 11 for generating a predetermined signal encrypted at the time of voltage input, a first amplifier section 12 for amplifying a signal generated by the encoder section 11, and the first amplifier. A transmitting unit 13 which carries a signal amplified by the first amplifying unit 12 at a predetermined transmission frequency and transmits the same through an antenna; The receiving means 2 includes a second amplifier 21 for amplifying a signal received through an antenna, and a tuning unit 22 for detecting only a frequency of a desired band from the signal amplified by the second amplifier 21. And a third amplifier 23 for amplifying the signal detected by the tuning unit 22, an OP amplifier 24 for finally amplifying the signal output from the third amplifier 23, and the OP amplifier. Decoder 25 for reading the signal output from 24 and outputting a predetermined control signal according to the read result, and an alarm unit for driving by the control signal output from the decoder 25 to output a predetermined alarm sound. Wireless communication device loss alarm, characterized in that consisting of (26). The method of claim 2, The decoder 25 includes an encryption detector 251 that detects only an encrypted portion of an input signal, a memory 253 that stores a reference password to be compared, and an encryption and memory detected by the encryption detector 251 ( And a comparator 252 for comparing a reference password stored in the signal 253 and outputting a low signal when the comparison result is not the same or a password is not detected. The method of claim 2, The alarm unit 26 is a transistor (Q14) for the on / off switching operation according to the output signal of the comparator 252, and the diode (D11) for operating the power supply (Vcc) by turning on when the transistor (Q14) off operation And an alarm sound generator (261) for operating a power input (Vcc) input from the diode (D11) to output a predetermined alarm sound.