KR20000030773A - An alarm system for prevention of loss - Google Patents

Abstract

PURPOSE: An alarm system for protection against loss is provided to perform an alarm function when a transmission device is apart from a reception device more than a predetermined distance by separating a transmission device and a reception device. CONSTITUTION: An alarm system for protection against loss comprises a transmission device portion(10) and a reception device portion(20). The transmission device portion comprises a transmission control portion(11), a modulation portion(12), a transmission portion(13), a time correction button portion(14), and a transmission power supply portion(15). The reception device portion comprises a reception portion(21), a filter and a first amplifier portion(22), a detection portion(23), a second amplifier portion(24), a level selection portion(25), a reception control portion(26), an alarm generation portion(27), and a reception power supply portion(28).

Description

Loss Prevention Alarm System {AN ALARM SYSTEM FOR PREVENTION OF LOSS}

The present invention relates to an alarm system for preventing a loss, and more particularly, by attaching a receiver unit to a belonging to be carried by a user so as to receive a high frequency signal propagated from the transmitter. When the user's belongings are lost or stolen, the user can recognize immediately when the user's belongings are lost or stolen. It's about the system.

In general, as the modern society develops, the modern people living in and changing rapidly and complexly use various devices such as laptops and mobile phones in order to actively respond to such modern life, or use media such as the Internet. In order to obtain or provide information, and to express one's own personality in modern life, which is becoming more and more uniform, various accessories are carried and used.

In some cases, expensive belongings decorated with jewelry or the like may be carried in the portable items. As described above, modern people often meet or entertain people with many portable items in their lives. In the process of processing work or seeing things quickly, they often lose their hands or things they don't care about, and even if the lost situation is recognized, it is easy to locate the lost items. There was a case in which it was not possible to leave it alone.

In addition, in social life, it is common to use public places where many people in subways, banks, department stores, etc. gather. In such public places, money or belongings are not known at all, especially by pickpockets. If you are stolen, no matter how careful you are, you can only be helped without help, and you will inadvertently lose a lot of money.

In order to protect their belongings or belongings from such loss or theft, they carry the carrying bag in their entirety while carrying it, or they carry it by attaching it to their body by forming a loop or tong on the carrying part or belongings. However, if you live in a busy life, you may be living without being aware of your belongings at all, and you may be unintentionally lost or stolen by others for help.

There is a need for a device that can securely protect its own belongings or belongings from such loss or theft, and in case of loss or theft, the owner immediately recognizes or recognizes the location of the lost or stolen items.

The present invention has been made to solve the above-mentioned conventional problems, and separates the transmitter unit and the receiver unit and attaches the receiver unit to its own portable or belongings so that a certain distance from the transmitter unit propagates in the receiver unit. If the signal cannot be received, and the signal is not received in the receiver, an alarm sounds to prevent the owner or the owner from recognizing that his or her belongings or belongings are lost or stolen. have.

In order to achieve the above object, it comprises a transmitter unit and a receiver unit, wherein the transmitter unit has a unique code and a transmission control unit for generating a digital signal at regular time intervals, and a digital signal having a unique code propagates through the aerial A modulator for converting a high frequency signal to a high frequency signal, a transmitter for transmitting a high frequency signal to a receiver, a time correction button unit for correcting a generation interval of a digital signal generated by the transmitter controller at a constant interval, and the transmitter A transmission power supply unit for supplying power, wherein the reception device unit receives a high frequency signal propagated by the transmission unit of the transmission unit, a filter and a primary amplifier for selecting and amplifying a corresponding frequency among the received high frequency signals; A corresponding high frequency signal received by the filter and the primary amplifier is received by the reception controller. A detector which demodulates into a digital signal that can be detected, a secondary amplifier that amplifies the minute digital signal demodulated by the detector, and when the signal amplified by the secondary amplifier becomes a predetermined signal or more, A level control unit, a reception control unit for identifying the identity by identifying the unique code of the received signal of the level selection unit, and if the signal received by the reception control unit is missed a predetermined number of times, the alarm sound to generate a constant sound It is intended to provide a loss prevention alarm system composed of a receiving power supply unit for supplying power to the receiving device unit.

1 is an overall circuit diagram of a loss prevention alarm system constructed by one embodiment of the present invention;

2 is a block diagram of a transmission apparatus applied to the present invention;

3 is a block diagram of a receiving apparatus applied to the present invention;

4 is an exemplary diagram showing a period of a signal generated at regular time intervals by a transmission controller according to the present invention.

* Description of Signs of Main Parts of Drawings *

10. Transmission device section 11. Transmission control section

12. Modulator 13. Transmitter

14. Time correction button 15. Transmitting power supply

20. Receiver 21. Receiver

22. Filter and primary amplifier 23. Detector

24. Secondary amplification section 25. Level selection section

26. Reception control unit 27. Alarm sound generating unit

28.Receive Power Supply

Hereinafter, the configuration according to an embodiment of the present invention with reference to the accompanying drawings in detail as follows.

1 is an overall circuit diagram of a loss prevention alarm system constructed according to an embodiment of the present invention, Figure 2 is a block diagram of a transmission device portion applied to the present invention, Figure 3 is a configuration of a receiver device applied to the present invention Fig. 4 is an example showing the period of a signal generated at regular time intervals by the transmission control unit according to the present invention.

As shown, the present invention is composed of a transmitter 10 and a receiver 20, the transmitter 10 is controlled by a microprocessor of the transmitter control unit 11. The digital signal having the unique code generated by the transmission control unit 11 is converted into a high frequency signal by the modulation unit 12 and propagated to the air by the transmission unit 13, and the reception unit 20 is a reception control unit ( 26 is controlled by a microprocessor, and the high frequency signal is received and amplified by the filter and the first-order intermediate section 22 among the signals received by the receiver 21, and the detector 23 receives the high frequency signal by the reception controller. The demodulation is performed by the second amplifying unit 24 to demodulate the digital signal so that the signal 26 can be recognized by the digital signal. The signal received by the level selecting unit 25 is determined by the receiving control unit 26 to determine whether the unique code matches. If it does not match, the alarm sound generating part 27 was comprised so that an alarm sound might emit.

The transmitter 10 consists of a transmitter control unit 11, a modulator 12, a transmitter 13, a time correction button unit 14, and a transmitter power supply unit 15.

The transmission control unit 11 controls the internal device of the transmission device unit 10 by a microprocessor, but generates and transmits a constant signal having a digital unique code at predetermined time intervals, and in particular, the transmission control unit 11 ) Is generated at regular time intervals, which is the time at which the next signal with the same unique code as the time (A) for generating the signal with the unique code, as shown in FIG. It can be configured as a time (B) that does not generate any signal, which is the interval between A '). During the time (B), the microcontroller maintains the power failure state. The power is supplied by the control of the processor to reduce the battery consumption of the transmission power supply unit 15.

The modulator 12 is a device for converting a digital signal having a unique code generated by the transmission control unit 11 into a high frequency signal of tens of MHz to hundreds of MHz capable of propagating to the air through wireless communication. Is a randomly adjustable variable value.

The transmitter 13 propagates a high frequency signal having a unique code converted by the modulator 12 to the air through a medium such as an antenna so that the receiver 20 receives it.

The time correction button unit 14 is received when a plurality of people use the present invention in the same place, even if the unique code is different, even if the time interval for generating a signal due to the signal generated by a plurality of transmitters are the same The apparatus may cause a malfunction. When the switch of the time correction button unit 14 is turned ON, the signal generated from the transmission control unit 11 is moved by a predetermined interval as a whole, so that the transmission apparatus unit 10 is generated. In order to properly identify the signal transmitted from the receiver 20.

The receiver 20 includes a receiver 21, a filter, a primary amplifier 22, a detector 23, a secondary amplifier 24, a level selector 25, a receiver controller 26, The alarm sound generating unit 27 and the receiving power supply unit 28 were configured.

The receiving unit 21 receives the high frequency signal transmitted from the transmitting unit 13 of the transmitting device unit 10 using a medium such as an antenna, so that the receiving unit 21 of the filter and the primary amplifier 22 receive the high frequency signal. In order to amplify the selected fine high-frequency signal to be easily recognized, and to select only the corresponding frequency from the signal received from the conventional ultra-regeneration formed of a transistor that is a filter circuit and an amplifying element to select only the corresponding frequency for this action Using the receiver circuit will be alright.

The detector 23 demodulates the high frequency signal selected and amplified by the filter and the primary amplifier 22 into a digital signal that can be recognized by the microprocessor of the receiver receiver 26. The amplifier is amplified by a predetermined value by a randomly set resistance value through the OPAMP.

In the level selection unit 25, when the signal falls below a certain distance due to the characteristics of the system used at a short distance, the signal is weakened. If the signal falls below a predetermined signal value, the reception is rejected. The reception was made to be transmitted to the reception control unit 26.

The reception control unit 26 controls the internal device of the reception device unit 20 by a microprocessor, and identifies whether the unique code of the digital signal received by the level selection unit 25 is the same as the unique code already stored. If the sameness is recognized, the standby state is maintained, and if the sameness is not recognized, and if a certain number of times is missed, the alarm sound generating unit 27 causes the alarm sound to be generated through a buzzer or a speaker.

In particular, in order to reduce battery consumption of the reception power supply unit 28, the state of the power is maintained on / off by the microprocessor of the reception control unit 26 in the same manner as the transmission control unit 11.

Looking at the process used and acted by one embodiment of the present invention configured as described above are as follows.

The present invention comprises a transmitter 10 and a receiver 20 formed of a small precision circuit, the transmitter 10 is a necklace, wrist, watch or key ring that can be carried or attached to the body The receiver device 20 has a built-in transmitting device circuit to allow the user to carry the device while extending. The receiving device unit 20 includes a receiving device circuit embedded in a small decorative doll or an attachment such as a sticker having various character shapes. , Notebooks, etc. are attached or formed integrally to articles or belongings that are particularly important to users so that they can be used in real life.

When the transceiver circuit is embedded in the article as described above, the transceiver circuit is operated by the control of the microprocessor of the transceiver controller. The transmitter controller 11 receives a digital signal having a unique code such as the serial number of the product. When generated and transmitted, the modulator 12 converts the digital signal into a high frequency signal and propagates to the air through the antenna of the transmitter 13, and the high frequency signal propagated into the air is received by the antenna of the receiver 21. However, only the corresponding frequency is received by the filter and the first amplification unit 22 to receive the first amplification by the transistor.

The high frequency signal received by the filter and the primary amplifier 22 is demodulated into a digital signal by the detector 23 and amplified by a OPAMP at a constant rate, but the level selector 25 When the signal is less than the set signal, the reception of the signal is rejected. When the signal is abnormal, the reception of the signal is made. Maintaining the standby state, if not the same number of times is missing, so that the alarm sound is generated through the buzzer or speaker of the alarm sound generator 27.

In addition, in the present invention, one transmitter 10 and one receiver 20 are used in principle, but one transmitter 10 and a plurality of receivers 20 are portable. Even if a plurality of receiving device circuits are built into a plurality of articles to be set by the plurality of receiving control unit 20 to identify the same unique code and the unique code of the signal transmitted from the transmitting device unit 10 It is also possible to use a plurality of receivers 20 as the transmitter 10 of the apparatus.

Therefore, when the portable device or belongings to which the receiving device 20 is attached fall a certain distance from the transmitting device 10, an alarm sound is generated to safely protect the goods from the risk of loss or theft unintentionally in a busy life. There is a feature to make it possible.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited to the drawings shown.

When the receiver unit attached to the portable or belongings is separated from the transmitter unit and the belonging unit by a certain distance away from the transmitter unit, an alarm sound is emitted.If the receiver unit is lost or stolen in a busy life, It can recognize whether the device is lost or stolen, and the location of lost or stolen goods can be grasped due to the sound of the alarm, and its portable and belongings can be prevented from loss or theft. It is convenient and there is an advantage such that the consumption of the battery can be reduced to a minimum due to the power failure state is maintained at the time when no signal is generated.

Claims (2)

In constructing a loss prevention alarm system, Comprising a transmitter and receiver unit, the transmitter is a transmission control unit for generating a digital signal at a predetermined time interval with a unique code, and converts the digital signal having a unique code into a high frequency signal to propagate through the aerial A modulator, a transmitter for transmitting a high frequency signal to a receiver, a time correction button unit for correcting a generation interval of a digital signal generated at the transmitter, and a transmission power unit for supplying power to the transmitter. And the receiver unit receives a high frequency signal propagated by the transmitter of the transmitter unit, a filter and a primary amplifier for selecting and amplifying a corresponding frequency among the received high frequency signals, and the filter and the primary amplifier. Copies the high frequency signal received from the digital signal that can be recognized by the reception controller. A detector for detecting the signal, a second amplifier for amplifying the minute digital signal demodulated by the detector, a level selector for receiving when the signal amplified by the second amplifier is equal to or greater than a predetermined signal, and the level. A reception control unit for identifying a unique code of the received signal of the selection unit and determining whether or not it is identical; an alarm sound generation unit for generating a constant alarm sound when a signal received by the reception control unit is missed a predetermined number of times; Loss prevention alarm system consisting of a receiving power supply for supplying power to. The method of claim 1, Loss prevention characterized in that the same unique code is set in multiple receiving units to identify a signal having a unique code transmitted from one transmitting unit so as to be compatible with multiple receiving units in one transmitting unit. Alarm system.