CN220252700U - Loss-proof alarm system - Google Patents

Abstract

The application provides a prevent losing alarm system, prevent losing alarm system and include: a signal receiving device and at least one signal transmitting device; the signal receiving apparatus includes: a first power supply circuit and a first radio frequency circuit; the first radio frequency circuit comprises a power supply circuit, a signal receiving circuit and a first control circuit; the first power supply circuit supplies power to the first control circuit through the power supply circuit; the signal receiving circuit is connected with the first control circuit and is used for converting the received target signal into target voltage; the first control circuit outputs a first control electric signal to the alarm circuit when the target voltage is larger than a first voltage threshold value, so that the alarm circuit alarms when receiving the first control electric signal; the magnitude of the target voltage is positively correlated with the distance between the signal transmitting device and the signal receiving device. The signal receiving equipment has simple structure and low manufacturing cost; the signal transmitting equipment is not required to be connected with an intelligent terminal, so that a user can be reminded of missing articles.

Description

Loss-proof alarm system

Technical Field

The application relates to the technical field of intelligent alarm, in particular to a loss-preventing alarm system.

Background

In daily life, a user can carry more personal articles outside, and the condition of missing articles happens sometimes, so that most of the anti-lost devices can prevent the articles from missing, but the anti-lost devices can only work after being connected with an intelligent terminal such as a mobile phone, and can not give an alarm when the mobile phone is lost, the mobile phone is not powered on or the mobile phone is not at the user; some anti-lost devices do not need to be connected with an intelligent terminal, but have complex structures and high manufacturing cost.

Disclosure of Invention

The application provides a prevent losing alarm system, aims at simplifying the structure of preventing losing alarm system, reduces manufacturing cost, improves the use convenience of preventing losing alarm system.

The anti-loss alarm system of the application comprises: a signal receiving device and at least one signal transmitting device; the signal receiving apparatus includes: the first power supply circuit comprises a first battery, and is used for converting electric energy provided by the first battery into a first charging signal and outputting the first charging signal; the first radio frequency circuit comprises a power supply circuit, a signal receiving circuit and a first control circuit; the power supply circuit is connected with the first power supply circuit, and the power supply circuit supplies power to the first control circuit when receiving the first charging signal; the first control circuit is connected with the signal receiving circuit, and the signal receiving circuit is used for converting a received target signal transmitted by the signal transmitting equipment into a target voltage output to the first control circuit; the first control circuit outputs a first control electric signal to the alarm circuit when the target voltage is larger than a first voltage threshold value, so that the alarm circuit alarms when receiving the first control electric signal; wherein the magnitude of the target voltage is positively correlated with the distance between the signal transmitting device and the signal receiving device.

The signal receiving equipment has simple structure and low manufacturing cost; the signal transmitting equipment does not need to be connected with the intelligent terminal, and when the signal transmitting equipment is far away from the signal receiving equipment, the signal receiving equipment can give an alarm so as to remind a user of missing articles.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an anti-loss alarm system according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a signal receiving apparatus according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a signal receiving apparatus according to another embodiment of the present application;

fig. 4 is a schematic structural diagram of a signal receiving apparatus according to another embodiment of the present application;

fig. 5 is a schematic structural diagram of a signal receiving apparatus according to another embodiment of the present application;

fig. 6 is a schematic structural diagram of a signal receiving apparatus according to still another embodiment of the present application;

fig. 7 is a schematic structural diagram of a signal receiving apparatus according to still another embodiment of the present application;

fig. 8 is a schematic diagram of a signal receiving apparatus according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a signal transmission device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a signal transmission device according to another embodiment of the present application.

Reference numerals illustrate:

10. an anti-loss alarm system; 100. a signal receiving device; 200. a signal transmitting device;

110. a first power supply circuit; 111. a first battery; 112. a chip circuit;

113. a charging circuit; 1131. a protection circuit; 1132. a voltage dividing circuit;

1133. a capacitance circuit; 120. a first radio frequency circuit; 121. a power supply circuit;

122. a signal receiving circuit; 123. a first control circuit; 130. an alarm circuit;

131. a first light emitting circuit; 132. a second light emitting circuit; 133. a vibration alarm circuit;

1331. a vibration control circuit; 210. a second power supply circuit; 221. a second battery;

220. a second radio frequency circuit; 221. a second control circuit; 222. a signal transmitting circuit;

230. a booster circuit.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The flow diagrams depicted in the figures are merely illustrative and not necessarily all of the elements and operations/steps are included or performed in the order described. For example, some operations/steps may be further divided, combined, or partially combined, so that the order of actual execution may be changed according to actual situations.

Some embodiments of the present application are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an anti-loss alarm system 10 according to an embodiment of the present application.

As shown in fig. 1, the loss prevention alarm system 10 includes a signal receiving apparatus 100 and at least one signal transmitting apparatus 200.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a signal receiving apparatus 100 according to an embodiment of the present application.

The signal receiving apparatus 100 includes a first power supply circuit 110 and a first radio frequency circuit 120; the first power supply circuit 110 includes a first battery 111, and the first power supply circuit 110 is configured to convert electric energy provided by the first battery 111 into a first charging signal and output the first charging signal. The first radio frequency circuit 120 includes a power supply circuit 121, a signal receiving circuit 122, and a first control circuit 123; the power supply circuit 121 is connected to the first power supply circuit 110, and the power supply circuit 121 supplies power to the first control circuit 123 when receiving the first charging signal output from the first power supply circuit 110; the signal receiving circuit 122 is connected to the first control circuit 123, and the signal receiving circuit 122 is configured to receive the target signal transmitted by the signal transmitting apparatus 200 and convert the received target signal into a target voltage output to the first control circuit 123; the first control circuit 123 outputs a first control electric signal to the alarm circuit 130 when the target voltage, the magnitude of which is positively correlated with the distance between the signal receiving apparatus 100 and the signal transmitting apparatus 200, is greater than the first voltage threshold value, so that the alarm circuit 130 alarms upon receiving the first control electric signal, realizing an alarm operation of the signal receiving apparatus 100.

It can be understood that the larger the distance between the signal receiving apparatus 100 and the signal transmitting apparatus 200, the smaller the target signal intensity received by the signal receiving circuit 122, and the larger the target voltage output by the signal receiving circuit 122 to the first control circuit 123, so that the signal receiving apparatus 100 can alarm when the distance between the signal receiving apparatus 100 and the signal transmitting apparatus 200 reaches a certain value.

It should be noted that the signal receiving apparatus 100 further includes a first housing, and the first power circuit 110 and the first radio frequency circuit 120 are at least partially disposed in the first housing.

The first battery 111 is illustratively a chargeable and dischargeable polymer battery.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a signal receiving apparatus 100 according to another embodiment of the present application.

In some embodiments, the alarm circuit 130 includes a first light emitting circuit 131 and a second light emitting circuit 132, a first end of the first light emitting circuit 131 is connected to the first signal output end of the first control circuit 123, and a second end of the first light emitting circuit 131 is connected to the first power supply circuit 110; the first end of the second light emitting circuit 132 is adjacent to the second signal output end of the first control circuit 123, and the second end of the second light emitting circuit 132 is connected to the second end of the first light emitting circuit 131. Wherein, the first light emitting circuit 131 and the second light emitting circuit 132 emit light with different colors when in an operating state.

For example, when the target voltage is greater than the first voltage threshold, the first control circuit 123 outputs a first control electrical signal to the first light-emitting circuit 131 at the first signal output end, so that the first light-emitting circuit 131 is turned on to emit light when receiving the first control electrical signal; when the target voltage is greater than the second voltage threshold, the first control circuit 123 outputs a second control electrical signal to the second light emitting circuit 132 at the second signal output end, so that the second light emitting circuit 132 conducts light emission when receiving the second control electrical signal, and the first voltage threshold is less than the second voltage threshold.

It can be understood that the target voltage increases as the distance between the signal transmitting apparatus 200 and the signal receiving apparatus 100 increases, and when the distance between the signal transmitting apparatus 200 and the signal receiving apparatus 100 reaches the first distance, the target voltage is greater than the first voltage threshold; and when the distance between the signal transmitting apparatus 200 and the signal receiving apparatus 100 reaches the second distance, the target voltage is greater than the second voltage threshold, wherein the first distance is smaller than the second distance. Through the set first voltage threshold value and second voltage threshold value, and the corresponding first light-emitting circuit 131 and second light-emitting circuit 132, the signal receiving apparatus 100 can alarm correspondingly according to the distance between the signal transmitting apparatus 200 and the signal receiving apparatus 100, and the user experience is increased.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a signal receiving apparatus 100 according to another embodiment of the present application.

In a specific embodiment, the first light emitting circuit 131 includes a first light emitting diode D1 and a first current limiting resistor R1, an anode of the first light emitting diode D1 is connected to the first power circuit 110, and a cathode of the first light emitting diode D1 is connected to a first end of the first current limiting resistor R1; the second end of the first current limiting resistor R1 is connected to the first signal output end of the first control circuit 123. The first light emitting diode D1 is conducted to emit light when receiving the first control electric signal so as to realize alarming.

It can be understood that the second light emitting circuit 132 includes a second light emitting diode D2 and a second current limiting resistor R2, wherein an anode of the second light emitting diode D2 is connected to the first power circuit 110, and a cathode of the second light emitting diode D2 is connected to a first end of the second current limiting resistor R2; the second end of the second current limiting resistor R2 is connected to the first signal output end of the first control circuit 123. The second light emitting diode D2 emits light when receiving the second control electrical signal, wherein the light emitting color of the first light emitting diode D1 is green, and the light emitting color of the second light emitting diode D2 is red.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a signal receiving apparatus 100 according to another embodiment of the present application.

In some embodiments, the alarm circuit 130 further includes a shock alarm circuit 133, the shock alarm circuit 133 including a shock device P1, an anti-reflection component D3, and a shock control circuit 1331; the first end of the vibration device P1 is connected with the positive electrode of the first battery 111, and the first end of the vibration device P1 is also connected with the first end of the vibration control circuit 1331 through the anti-reflection component D3; a second terminal of the vibration device P1 is connected to a first terminal of the vibration control circuit 1331, a second terminal of the vibration control circuit 1331 is grounded, and a controlled terminal of the vibration control circuit 1331 is connected to the first control circuit 123.

The vibration control circuit 1331 is turned on when the voltage of the controlled end of the vibration control circuit 1331 is greater than the threshold of the turn-on voltage, and the vibration device P1 vibrates when the vibration control circuit 1331 is turned on.

Illustratively, the shock device P1 operates from the power provided by the first battery 111 and shocks when the shock control circuit 1331 is turned on. The anti-reflection component D3 prevents the current output by the first battery 111 from being guided to the vibration control circuit 1331, so as to achieve the purpose of protecting the vibration control circuit 1331.

In some embodiments, the shock control circuit 1331 includes a switching tube Q1, a first resistor R3, and a second resistor R4; the first end of the switching tube Q1 is used for being connected with the second end of the vibration device P1, the second end of the switching tube Q1 is connected with the first end of the first resistor R3, and the second end of the first resistor R3 and the controlled end of the switching tube Q1 are both connected with the first control circuit 123; the second end of the switch tube Q1 is also connected with the first end of the second resistor R4, and the second end of the second resistor R4 is grounded.

In a specific implementation process, when the target voltage is greater than the second voltage threshold, the first control circuit 123 outputs a vibration driving signal to the controlled end of the switching tube, so that the controlled end of the switching tube is greater than the conducting voltage threshold and is conducted, and the vibration device vibrates.

Illustratively, the vibration device includes a motor.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a signal receiving apparatus 100 according to another embodiment of the present application.

In some implementations, the first power supply circuit 110 further includes a chip circuit 112 and a charging circuit 113; a first end of the chip circuit 112 is connected with the positive electrode of the first battery 111, and the negative electrode of the first battery 111 is grounded; a second terminal of the chip circuit 112 is connected to the charging circuit 113. The charging circuit 113 is configured to be connected to an external power source, and when the charging circuit 113 is connected to the external power source, the charging circuit 113 can charge the first battery 111 with electric energy provided by the external power source, so as to charge the signal receiving apparatus 100.

In some embodiments, the charging circuit 113 includes a protection circuit 1131, a voltage divider circuit 1132, a capacitance circuit 1133, and an interface component E1; the first end of the protection circuit 1131 is connected with the second end of the chip circuit 112, and the second end of the protection circuit 1131 is grounded; the first end of the protection circuit 1131 is also connected with a first port of the interface component E1, and a second port of the interface component E1 is grounded; the voltage division circuit 1132 and the capacitance circuit 1133 are both connected in parallel with the protection circuit 1131, and the voltage division end of the voltage division circuit 1132 is connected with the first control circuit 123.

The protection circuit 1131 is configured to avoid damage to the chip circuit 112 caused by voltage abrupt change when the charging circuit 113 is connected to an external power source to charge the first battery 111.

When the charging circuit 113 is connected to an external power supply, the first control circuit 123 is further configured to output a second control signal to the second light emitting circuit 132 according to the voltage division signal output by the voltage division terminal, so that the second light emitting diode in the second light emitting circuit 132 emits light in a flashing manner.

In some embodiments, the first power circuit 110 further includes a voltage stabilizing circuit, an input terminal of the voltage stabilizing circuit is connected to the positive electrode of the first battery 111, and a second terminal of the voltage stabilizing circuit is connected to the first control circuit 123, the second terminal of the first light emitting circuit 131, and the second terminal of the second light emitting circuit 132. The voltage stabilizing circuit is used for converting the electric energy provided by the first battery 111 into a first charging signal to supply power to the first control circuit 123, the first light emitting circuit 131 and the second light emitting circuit 132.

In a specific implementation process, a lithium battery with a first battery 111 of 4.2V is taken as an example, it is to be understood that a positive electrode of the lithium battery is connected to the vibration alarm circuit 133130 to provide an operating voltage of 4.2V to the vibration alarm circuit 133130, and the lithium battery is connected to the first control circuit 123, the first light-emitting circuit 131 and the second light-emitting circuit 132 through a voltage stabilizing circuit to provide an operating voltage of 3.3V to the first control circuit 123, the first light-emitting circuit 131 and the second light-emitting circuit 132.

The types and rated voltages of the first battery 111 provided above are exemplary and are not limited to the types and rated voltages of the first battery 111 of the present application.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a signal receiving apparatus 100 according to another embodiment of the present application.

In some embodiments, the first rf circuit 120 further includes a first crystal oscillator Y1, a first capacitor C1, and a second capacitor C2; the first end of the first crystal oscillator Y1 is connected with the first end of the first control circuit 123, and the second end of the first crystal oscillator Y1 is connected with the second end of the first control circuit 123; the first end of the crystal oscillator Y1 is also connected with the first end of the first capacitor C1, and the second end of the first capacitor C1 is grounded; the second end of the first crystal oscillator Y1 is further connected to the first end of the second capacitor C2, and the second end of the second capacitor C2 is grounded. It will be appreciated that the first crystal oscillator Y1 is used to frequency select the signal received by the signal receiving circuit 122 to determine the target signal transmitted by the signal transmitting device 200.

In some embodiments, the signal receiving circuit 122 includes an antenna element E1, a third resistor R3, a third capacitor C3, and a fourth capacitor C4; the antenna component E1 is connected with the first end of the third resistor R3; the first end of the third resistor R3 is also connected with the first end of the third capacitor C3, and the second end of the third capacitor C3 is grounded; the second end of the third resistor R3 is connected to the signal input end of the first control circuit 123, and the second end of the third resistor R3 is further connected to the first end of the fourth capacitor R4, where the second end of the fourth capacitor R4 is grounded.

Illustratively, the antenna assembly E1 is configured to receive electromagnetic wave signals, such that the signal receiving circuit 122 is capable of converting signals received by the antenna assembly E1 into corresponding target voltages.

In some embodiments, the first rf circuit 120 further includes a key switch, a first end of the key switch is connected to the switch end of the first control circuit 123, and a second end of the key switch is grounded. When the key switch is in an on state, the first control circuit 123 receives the first charging signal to start, and when the key switch is in an off state, the first control circuit 123 is turned off to save electric energy.

Referring to fig. 8, fig. 8 is a signal receiving apparatus according to an embodiment of the present application.

In some embodiments, the signal receiving apparatus 100 includes a wearing apparatus 300, so that a user wears on the body, and when the signal receiving apparatus 100 alarms, the user is timely perceived, and the wearing apparatus 300 is in communication connection with the signal transmitting apparatus, so that the signal transmitting apparatus does not need to be connected with an intelligent terminal, and the user is prevented from forgetting the intelligent terminal and the signal transmitting apparatus at the same time, or the intelligent terminal is lost, so that the signal transmitting apparatus cannot function, and the energy consumption of the intelligent terminal can be saved.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a signal transmission apparatus 200 according to an embodiment of the present application.

In some embodiments, the signal transmitting device 200 includes a second power circuit 210 and a second radio frequency circuit 220. The second power supply circuit 210 includes a second battery 211, and the second power supply circuit 210 is configured to convert electric energy provided by the second battery 211 into a second charging signal and output the second charging signal. The second radio frequency circuit 220 includes a second control circuit 221 and a signal transmitting circuit 222, the second control circuit 221 is connected to the signal transmitting circuit 222, and the second control circuit 221 outputs a driving signal to the signal transmitting circuit 222 when receiving the second charging signal, so that the signal transmitting circuit 222 transmits a target signal when receiving the driving signal.

Specifically, the second power supply circuit 210 uses the electric power supplied from the second battery 211 to supply power to the second control circuit 221, so that the second control circuit 221 can output a driving signal to the signal transmitting circuit 222.

The second battery 221 is illustratively a button battery.

In the specific embodiment, the signal transmitting circuit 222 has the same structure as the signal receiving circuit 122 in the signal receiving apparatus 100, please refer to the signal receiving circuit 122 above, and the description is omitted herein.

Referring to fig. 10, fig. 10 is a schematic structural diagram of a signal transmission apparatus 200 according to another embodiment of the present application.

In some embodiments, the signal transmitting apparatus 200 further includes a boost circuit 230 connected to the second control circuit 221. The boost circuit 230 is configured to boost the voltage signal output by the dc output terminal of the second control circuit, and output the boosted voltage signal to the dc enable terminal of the second control circuit 221, so that the second control circuit 221 operates under the driving of the second charging signal and the boosted voltage signal.

In some embodiments, the boost circuit 230 includes a fifth capacitor C5, a sixth capacitor C6, and an inductor L1. The first end of the fifth capacitor C5 is connected to the dc output end of the second control circuit 221, and the first end of the fifth capacitor C5 is connected to the first end of the sixth capacitor C6 and the first end of the inductor L1; the second end of the fifth capacitor C5 and the second end of the sixth capacitor C6 are grounded, and the second end of the inductor L1 is connected to the dc enable end of the second control circuit 221, so as to increase the voltage signal output by the dc enable end of the second control circuit 221 through the fifth capacitor C5, the sixth capacitor C6 and the inductor L1.

With continued reference to fig. 10, the second rf circuit 220 further includes a second crystal oscillator Y2, a seventh capacitor C7, and an eighth capacitor C8. A first end of the second crystal oscillator Y2 is connected to a first end of the second control circuit 221, and a second end of the second crystal oscillator Y2 is connected to a second end of the second control circuit 221; the first end of the second control circuit 221 is further connected to the first end of the seventh capacitor C7, and the second end of the seventh capacitor C7 is grounded; the second end of the second control circuit 221 is further connected to the first end of the eighth capacitor C8, and the second end of the eighth capacitor C8 is grounded, so as to realize frequency selection of the transmitted target signal through the second crystal oscillator Y2, the seventh capacitor C7 and the eighth capacitor C8.

The signal transmitting apparatus 200 is composed of the second power supply circuit 210 and the second radio frequency circuit 220, has a simple structure, achieves an effect of reducing manufacturing costs, and the signal transmitting apparatus 200 can transmit a target signal so that the signal receiving apparatus 100 can alarm based on receiving the target signal to remind a user of a distance between the signal transmitting apparatus 200 and the signal receiving apparatus 100.

It is to be understood that the terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should also be understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations. It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.

The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments. While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (12)

1. A loss prevention alarm system, the loss prevention alarm system comprising: a signal receiving device and at least one signal transmitting device; the signal receiving apparatus includes:

the first power supply circuit comprises a first battery, and is used for converting electric energy provided by the first battery into a first charging signal and outputting the first charging signal;

the first radio frequency circuit comprises a power supply circuit, a signal receiving circuit and a first control circuit; the power supply circuit is connected with the first power supply circuit, and the power supply circuit supplies power to the first control circuit when receiving the first charging signal; the signal receiving circuit is connected with the first control circuit and is used for converting a received target signal transmitted by the signal transmitting equipment into a target voltage output to the first control circuit; the first control circuit outputs a first control electric signal to the alarm circuit when the target voltage is larger than a first voltage threshold value, so that the alarm circuit alarms when receiving the first control electric signal;

wherein the magnitude of the target voltage is positively correlated with the distance between the signal receiving apparatus and the signal transmitting apparatus.

2. The loss prevention alarm system of claim 1, wherein the alarm circuit comprises a first light emitting circuit and a second light emitting circuit; a first end of the first light-emitting circuit is connected with a first signal output end of the first control circuit, and a second end of the first light-emitting circuit is connected with the first power supply circuit; the first end of the second light-emitting circuit is connected with the second signal output end of the first control circuit, the second end of the second light-emitting circuit is connected with the second end of the first light-emitting circuit, and the light-emitting colors of the first light-emitting circuit and the second light-emitting circuit are different when the first light-emitting circuit and the second light-emitting circuit are in a working state;

the first light-emitting circuit is conducted to emit light when the first control electric signal is received; the first control circuit outputs a second control electric signal to the second light-emitting circuit when the target voltage is larger than a second voltage threshold, and the second light-emitting circuit conducts light emission when receiving the second control electric signal; the first voltage threshold is less than the second voltage threshold.

3. The loss prevention alarm system of claim 2, wherein the alarm circuit further comprises a shock alarm circuit comprising a shock device, a anti-reflection component, and a shock control circuit; the first end of the vibration device is connected with the first battery, and the first end of the vibration device is also connected with the first end of the vibration control circuit through the anti-reflection component; the second end of the vibration device is connected with the first end of the vibration control circuit, the second end of the vibration control circuit is grounded, and the controlled end of the vibration control circuit is used for being connected with the first control circuit;

the vibration control circuit is conducted when the voltage of the controlled end of the vibration control circuit is larger than a conducting voltage threshold value, so that the vibration device vibrates.

4. The loss prevention alarm system of claim 3, wherein said shock control circuit comprises a switching tube, a first resistor and a second resistor; the first end of the switching tube is used for being connected with the second end of the vibration device, the second end of the switching tube is connected with the first end of the first resistor, and the second end of the first resistor and the controlled end of the switching tube are both connected with the first control circuit; the second end of the switch tube is also connected with the first end of the second resistor, and the second end of the second resistor is grounded;

and the switching tube is conducted when the voltage of the controlled end of the switching tube is larger than the conducting voltage threshold value.

5. The loss prevention alarm system of any of claims 1-4, wherein said first power supply circuit further comprises a chip circuit and a charging circuit; the first end of the chip circuit is connected with the anode of the first battery; the second end of the chip circuit is connected with the charging circuit;

the charging circuit is used for being connected with an external power supply so as to charge the first battery according to the electric energy provided by the external power supply when the charging circuit is connected with the external power supply.

6. The loss prevention alarm system of claim 5, wherein said charging circuit comprises a protection circuit, a voltage divider circuit, a capacitance circuit, and an interface component; the first end of the protection circuit is connected with the second end of the chip circuit, and the second end of the protection circuit is grounded; the first end of the protection circuit is also connected with the first port of the interface component, and the second port of the interface component is grounded; the voltage dividing circuit and the capacitance circuit are connected with the protection circuit in parallel; the voltage division end of the voltage division circuit is connected with the first control circuit.

7. The loss prevention alarm system of any of claims 1-4, wherein said first radio frequency circuit further comprises a first crystal oscillator, a first capacitor, and a second capacitor; the first end of the first crystal oscillator is connected with the first end of the first control circuit, and the second end of the first crystal oscillator is connected with the second end of the first control circuit; the first end of the first crystal oscillator is grounded through the first capacitor, and the second end of the first crystal oscillator is grounded through the second capacitor;

the first crystal oscillator is used for selecting frequencies of signals received by the signal receiving circuit so as to determine the target signals.

8. The loss prevention alarm system of claim 7, wherein the signal receiving circuit comprises an antenna assembly, a third resistor, a third capacitor, and a fourth capacitor; the first end of the antenna component is used for being connected with an antenna device, and the second end of the antenna component is connected with the first end of the third resistor; the first end of the third resistor is grounded through the third capacitor, the second end of the third resistor is connected with the signal input end of the first control circuit, and the second end of the third resistor is grounded through the fourth capacitor.

9. The loss prevention alarm system of any of claims 1-4, wherein the signal receiving device comprises a wearable device.

10. The loss prevention alarm system of any of claims 1-4, wherein said signal transmitting device comprises:

the second power supply circuit comprises a second battery, and is used for converting electric energy provided by the second battery into a second charging signal and outputting the second charging signal;

the second radio frequency circuit comprises a second control circuit and a signal transmitting circuit, and the second control circuit is connected with the signal transmitting circuit; the second control circuit outputs a driving signal to the signal transmitting circuit when receiving the second charging signal, and the signal transmitting circuit transmits a target signal when receiving the driving signal.

11. The loss prevention alarm system of claim 10, wherein said signal transmitting device further comprises a boost circuit, said boost circuit being connected to said second control circuit; the boost circuit is used for increasing the voltage signal output by the direct current output end of the second control circuit and outputting the increased voltage signal to the direct current enabling end of the second control circuit so that the second control circuit works under the drive of the second charging signal and the increased voltage signal.

12. The loss prevention alarm system of claim 11, wherein said boost circuit comprises a fifth capacitor, a sixth capacitor, and an inductor; the first end of the fifth capacitor is connected with the direct current output end of the second control circuit, and the first end of the fifth capacitor is connected with the first end of the sixth capacitor and the first end of the inductor; the second end of the fifth capacitor and the second end of the sixth capacitor are grounded, and the second end of the inductor is connected with the direct current enabling end of the second control circuit.