Mobile phone burglar alarm

Abstract

The utility model discloses a mobile phone burglar alarm, which relates to the technical field of mobile phone burglary prevention, and comprises an alarm box, a main control chip is fixedly arranged in the alarm box, a plurality of USB (Universal Serial Bus) female seats are embedded on the main control chip, and data lines are inserted on the USB female seats; a bottom cover is fixedly installed on the bottom side of the alarm box through screws, an air inlet is formed in the middle of the bottom cover, air outlets are formed in the left side and the right side of the bottom cover, and a cooling fan is fixedly installed on the bottom side of the main control chip. A sound-light alarm module is fixedly installed in the alarm box, and the sound-light alarm module is electrically connected with the main control chip. One end, far away from the USB female seat, of the data line is provided with two plugging ports, one plugging port is inserted into the input end of a mobile phone for charging, and the other plugging port is provided with a detector in a plugging manner; the mobile phone anti-theft system improves anti-theft performance, gives consideration to both user experience and equipment heat dissipation, effectively reduces the risk that a mobile phone is stolen, reduces false alarm interference, and has remarkable practical value and commercial popularization potential.

Description

TECHNICAL FIELD

[0001] The utility model relates to mobile phone theftproof technical field especially is mobile phone theftproof alarm. BACKGROUND

[0002] With the increase of smart phone display demand, physical mobile phone retail stores usually display real machines on the exhibition stand for customers to experience. However, this open display method also brings a high risk of theft. At present, the industry mainly adopts the following several anti-theft schemes:

[0003] 1. Traditional anti-theft cable: the mobile phone is fixed on the exhibition stand through physical lock or steel cable, but it seriously affects user experience and cannot prevent violent disassembly or data line cutting.

[0004] 2. Simple wire pulling alarm: some stores use USB connection type alarm, which triggers a buzzer alarm when the data line is pulled out. However, this scheme has obvious defects:

[0005] High false alarm rate: the customer may accidentally loosen the data line when using it normally, causing false alarm.

[0006] No continuous monitoring: only rely on wired connection detection, cannot deal with the situation of cutting wire, wireless distance change or device being moved as a whole.

[0007] Heat dissipation problem: long time work easily leads to overheating of the main control chip, affecting stability.

[0008] The utility model provides a mobile phone theftproof alarm specially designed for mobile phone retail stores, which can work stably for a long time without affecting user experience and greatly improve the anti-theft safety of exhibition stand mobile phones. INVENTION CONTENTS

[0009] The utility model provides a technical scheme which can solve the above problems to overcome the above shortcomings.

[0010] The mobile phone theftproof alarm comprises an alarm box, a main control chip is fixedly installed in the alarm box, a plurality of USB female seats are inlaidly installed on the main control chip, data lines are insertedly installed on the USB female seats, and the USB female seats are electrically connected with the input end of the mobile phone through the data lines.

[0011] The bottom side of the alarm box is fixedly installed with a bottom cover through screws, the middle part of the bottom cover is formed with an air inlet, the left and right sides of the bottom cover are both formed with air outlets, the bottom side of the main control chip is fixedly installed with a cooling fan, the cooling fan is located above the air inlet, the cooling fan blows air onto the main control chip and outputs hot air through the air outlets, and the bottom cover is fixedly installed with a bottom cover.

[0012] The sound and light alarm module is fixedly installed in the alarm box and is electrically connected with the main control chip.

[0013] Further, two plug-in ports are arranged at the end of the data line away from the USB female seat, the two plug-in ports are connected in parallel on the data line, one of the plug-in ports is inserted into the input end of the mobile phone for charging, and the other plug-in port is provided with a detector.

[0014] Further, the detector is provided with a patch, and the surface of the patch is covered with 3M glue.

[0015] Further, the 3M glue is 3M VHB double-sided adhesive tape.

[0016] Further, the detector and the data line are fixedly provided with an elastic silica gel bandage.

[0017] Further, the detector comprises a battery, a vibration sensing module and a wireless distance detection module, the battery supplies power to the vibration sensing module and the wireless distance detection module, and one of the plug-in ports charges the battery.

[0018] Further, the wireless distance detection module and the main control chip are wirelessly connected through Bluetooth.

[0019] Further, the main control chip adopts an ESP32-C3 chip, and the main control chip is integrated with a Bluetooth 5.0 module and a WiFi 4 module.

[0020] Further, the wireless distance detection module adopts a Bluetooth 5.0 low-power protocol, and realizes distance detection within a range of 1-10 meters through an RSSI (Received Signal Strength Indicator) algorithm, with a detection accuracy of ±0.5 meters, and the wireless distance detection module and the main control chip are wirelessly connected through Bluetooth.

[0021] Further, the vibration sensing module adopts a MEMS three-axis accelerometer, and the sensitivity can be adjusted within a range of ±2g to ±16g, and the alarm is triggered when the continuous vibration time exceeds 500ms.

[0022] Further, the battery adopts a 603040 specification lithium polymer battery.

[0023] Further, the sound and light alarm module comprises a buzzer and a warning light.

[0024] Further, the alarm box is formed with a lamp groove, and the warning light is gap-fitted and installed in the lamp groove.

[0025] Further, the buzzer adopts a piezoelectric buzzer with a resonance frequency ≥3kHz and a maximum sound pressure level ≥90dB.

[0026] Further: the warning light is composed of 3 RGB LEDs, supporting red and blue alternate flashing mode.

[0027] Further: the air outlets on the left and right sides of the bottom cover are provided with a plurality of air outlets, and the plurality of air outlets are arranged at equal distances from each other, and the left and right sides of the inner side of the bottom cover are integrally formed with baffles, and the baffles are arranged above the plurality of air outlets.

[0028] Compared with the prior art, the utility model has the beneficial effects that:

[0029] 1. Multiple anti-theft mechanisms, significantly improved security, using wire detection + wireless distance monitoring + vibration sensing, through data line physical connection, Bluetooth RSSI distance detection (accuracy ± 0.5 meters) and three-axis accelerometer vibration monitoring (sensitivity adjustable) triple protection, effectively dealing with theft behaviors such as cutting wire, violent disassembly or overall movement, greatly reducing false alarm rate and false negative rate.

[0030] 2. Use elastic silica gel bandage to assist in anti-theft, which will trigger vibration alarm when the bandage is broken, and enhance the anti-damage ability.

[0031] 3. User experience optimization, taking into account display and security, the detector is fixed on the back of the mobile phone through hidden design, specifically the detector is pasted on the back of the mobile phone through 3M VHB adhesive, which does not affect the appearance and operation of the mobile phone; One-two data line supports charging and status monitoring in parallel, avoiding the interference of traditional cable on trial experience.

[0032] 4. Non-inductive monitoring, wireless distance detection is realized through Bluetooth low power protocol (BLE 5.0), and the customer has no perception when normally using.

[0033] 5. Efficient heat dissipation system to ensure long-term stable operation, specifically using active cooling design: cooling fan cooperates with optimized air duct (air inlet + baffle guide air outlet) to ensure that the main control chip (such as ESP32-C3) does not overheat for a long time, solving the stability problem caused by chip overheating in the prior art.

[0034] In summary, the utility model improves the anti-theft performance while taking into account user experience and equipment reliability, especially suitable for high-traffic mobile phone retail scenarios, effectively reducing the risk of theft and false alarms, and has significant practical value and commercial promotion potential.

[0035] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0037] Figure 1 is a structural schematic diagram of the present application;

[0038] Figure 2 is a structural schematic diagram of another view of the present application;

[0039] Figure 3 is an exploded structural schematic diagram of the present application;

[0040] Figure 4 is Figure 3 a structural schematic diagram of another view;

[0041] Figure 5 is a working principle structural schematic diagram of the present application.

[0042] As shown in the figure: 1, alarm box; 2, main control chip; 3, USB female seat; 4, data line; 5, bottom cover; 6, air inlet; 7, air outlet; 8, cooling fan; 9, sound and light alarm module; 91, buzzer; 92, warning light; 10, plug-in port; 11, detector; 111, battery; 112, vibration sensing module; 113, wireless distance detection module; 12, patch; 13, 3M glue; 14, elastic silica gel bandage; 15, Bluetooth 5.0 module; 16, WiFi4 module; 17, lamp groove; 18, blocking piece. DETAILED DESCRIPTION

[0043] The technical solutions of the present application will be described clearly and completely below in combination with the drawings, obviously, the described embodiments are only some embodiments of the present application, not all the embodiments.

[0044] The components of the embodiments of the present application described and displayed in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0045] Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0046] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element must have a particular orientation, construct and operate in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0047] In the description of the utility model, it needs to explain, unless otherwise expressly provided and limited, the terms "installation", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0048] As shown in Figures 1-5 The utility model discloses a mobile phone theft alarm, including alarm box 1, alarm box 1 is fixedly installed with main control chip 2, a plurality of USB female seat 3 are inlaidly installed on main control chip 2, data line 4 is insertedly installed on USB female seat 3, and the input end of the mobile phone is electrically connected with each other through data line 4 of USB female seat 3.

[0049] The bottom side of alarm box 1 is fixedly installed with bottom cover 5 through screw, the middle part of bottom cover 5 is formed with air inlet 6, and the left and right sides of bottom cover 5 are formed with air outlet 7, and the bottom side of main control chip 2 is fixedly installed with cooling fan 8, cooling fan 8 is located above air inlet 6, and cooling fan 8 blows to main control chip 2 and exports hot air through air outlet 7.

[0050] Sound and light alarm module 9 is fixedly installed in alarm box 1, and sound and light alarm module 9 and main control chip 2 are electrically connected with each other.

[0051] Its principle is: main control chip 2 is connected with the mobile phone through data line 4 on USB female seat 3, the charging of the mobile phone and the line detection are realized, main control chip 2 controls sound and light alarm module 9 to start when the line is pulled, and then the alarm function is realized, since main control chip 2 needs to work for a long time, cooling fan 8 is arranged to cool it, to ensure that main control chip 2 does not overheat, to ensure the normal operation of line detection, since it will not overheat and damage, it can effectively prevent theft and avoid line detection failure.

[0052] Further, two plug-in ports 10 are arranged at the end of the data line 4 away from the USB female seat 3, and the two plug-in ports 10 are connected in parallel on the data line 4, one of the plug-in ports 10 is inserted into the input end of the mobile phone for charging, and the other plug-in port 10 is inserted and installed with a detector 11, and the detector 11 is fixedly connected with the mobile phone; the data line 4 is a two-way data line 4, which can be used for charging the mobile phone and detecting the real-time state of the mobile phone, further enhancing the effect of theft prevention.

[0053] Further, the detector 11 is provided with a patch 12, the surface of the patch 12 is covered and installed with 3M glue 13, and the patch 12 is fixedly attached to the back of the mobile phone by the 3M glue 13; the detector 11 can be attached to the mobile phone by the 3M glue 13 on the patch 12, realizing stable installation of the detector 11 on the mobile phone.

[0054] Further, the 3M glue 13 adopts 3M VHB double-sided adhesive; it has the characteristics of strong adhesion, ensuring that the detector 11 can be stably fixed on the mobile phone.

[0055] Further, the detector 11 and the data line 4 are fixedly installed with an elastic silica gel bandage 14; the elastic silica gel bandage 14 is used to enhance the effect of theft prevention, which is not easy to be pulled off, and when the elastic silica gel bandage 14 is pulled off, it will produce violent vibration for real-time detection by the detector 11, realizing the effect of accurately judging whether the mobile phone is stolen.

[0056] Further, the detector 11 includes a battery 111, a vibration sensing module 112 and a wireless distance detection module 113, the battery 111 supplies power to the vibration sensing module 112 and the wireless distance detection module 113, and one of the plug-in ports 10 charges the battery 111; the detector 11 has the battery 111, which can still supply power to the vibration sensing module 112 and the wireless distance detection module 113 after the data line 4 is pulled off, realizing vibration detection and distance detection, and effectively preventing the mobile phone from being stolen.

[0057] Further, the wireless distance detection module 113 and the master control chip 2 are wirelessly connected through Bluetooth; Bluetooth communication connection can be realized, and the sound and light alarm module 9 can be started in time for alarm when the distance is far or the Bluetooth is disconnected, for prompting the staff that the mobile phone is stolen.

[0058] Further, the master control chip 2 adopts an ESP32-C3 chip, and the master control chip 2 is integrated with a Bluetooth 5.0 module 15 and a WiFi 4 module 16.

[0059] Further, the wireless distance detection module 113 adopts Bluetooth 5.0 low-power protocol, and realizes distance detection within a range of 1-10 meters through an RSSI (Received Signal Strength Indicator) algorithm, with a detection accuracy of ±0.5 meters. The wireless distance detection module 113 is wirelessly connected to the main control chip 2 through Bluetooth.

[0060] Further, the vibration sensing module 112 adopts a MEMS three-axis accelerometer, with a sensitivity adjustable range of ±2g to ±16g, and triggers an alarm when the duration of continuous vibration exceeds 500ms.

[0061] Further, the battery 111 adopts a 603040 specification lithium polymer battery 111.

[0062] Further, the sound and light alarm module 9 includes a buzzer 91 and a warning light 92, and can alarm and prompt through sound and light combination, effectively preventing the phone from being stolen.

[0063] Further, the alarm box 1 is formed with a lamp groove 17, and the warning light 92 is gap-fitted and installed in the lamp groove 17, so that the entire alarm box 1 is more flat and beautiful.

[0064] Further, the buzzer 91 adopts a piezoelectric buzzer 91 with a resonance frequency ≥3kHz and a maximum sound pressure level ≥90dB.

[0065] Further, the warning light 92 is composed of three RGB LEDs, which support red and blue alternating flashing mode.

[0066] Further, the left and right sides of the bottom cover 5 are each provided with a plurality of air outlets 7, and the plurality of air outlets 7 are arranged in an equidistant array. The left and right sides of the inner side of the bottom cover 5 are integrally formed with baffles 18, and the baffles 18 are arranged above the plurality of air outlets 7. The baffles 18 can be used to limit the air outlet direction of the air outlets 7, thereby ensuring the smoothness of the air path and achieving the effect of rapid heat dissipation. In addition, the baffles 18 can also strengthen the strength of the air outlet 7 position, and the bottom cover 5 is not easy to be damaged when falling.

[0067] Embodiment one includes an alarm box 1 structure, which contains a bottom cover 5, an air inlet 6, an air outlet 7, and a baffle 18. The alarm box 1 is installed with a main control chip 2, which adopts ESP32-C3. The main control chip 2 has eight USB female seats 3. The heat dissipation system includes a middle air inlet 6+double-sided air outlet 7+heat dissipation fan 8 directly blowing the main control chip 2.

[0068] The linkage control module includes a WiFi4 module 16 built-in the main control chip 2. The WiFi4 module 16 is used to connect the router, and each USB female seat 3 is provided with a corresponding independent ID. When the alarm is triggered, the specific port number is uploaded.

[0069] Technical effects: can realize single host monitoring multiple mobile phones, use the heat dissipation system for stable heat dissipation, ensure the long time stable work of the main control chip 2, realize networking theft prevention by using wireless communication module.

[0070] The reinforced design of the detector 11 on the mobile phone is pasted to the back of the mobile phone by 3M VHB double-sided adhesive, and then connected by elastic silica gel bandage 14, and a metal braid layer is added on the elastic silica gel bandage 14. When the elastic silica gel bandage is pulled off, the vibration sensing module 112 in the detector 11 will sense a large vibration, at which time the sound and light alarm module 9 will trigger the alarm action. The detector 11 and the main control chip 2 use Bluetooth 5.0 module 15 for wireless transmission. A PCB ring antenna can be added on the Bluetooth 5.0 module 15 to enhance the stability of signal transmission, and a moving average filter is added through RSSI algorithm.

[0071] Technical effects: when the bandage is cut or pulled off, the circuit can be triggered by the disconnection of the metal mesh, and the mechanical fracture will trigger a large vibration to trigger the alarm. The use of double signal verification can reduce the false alarm rate and realize accurate detection and alarm. The filter algorithm can improve the stability of distance detection.

[0072] In this embodiment, through the dual-mode charging detection circuit, specifically using current comparator LM393: normal charging: no alarm when current ≥500mA; abnormal line pulling: trigger alarm when current drops to <100mA.

[0073] In example two, a photosensitive resistor is added to the main control chip 2, which can automatically switch between daytime and nighttime modes according to the ambient light. Day mode: full function full state operation; Night mode: turn off warning light 92, vibration sensing sensitivity is increased to ±2g.

[0074] A battery 111 of the detector 11 is added with an over-discharge protection circuit, i.e. a 603040 lithium battery is added with a matching design; the cooling fan 8 is replaced by a temperature trigger start: the fan speed is adjusted in three stages, 1. When the temperature threshold is <45℃, the main control chip 2 is in the normal working temperature range, at which time the cooling fan 8 stops running; 2. When the temperature threshold is ≥45℃, the effect of long time work without overheating is not met, and the cooling fan 8 is in a low speed running state; 3. But when the temperature threshold is ≥60℃, it is in the critical value of overheat protection, at which time the cooling fan 8 runs at full speed.

[0075] It also has the function of sound and light alarm linkage. An independent RGB LED is set on each USB female seat 3, which triggers the alarm sound of the buzzer 91 together, emits a continuous sound of 3kHz when the line is pulled off, and emits an intermittent sound of 2.5kHz when the distance exceeds the preset store range.

[0076] The embodiments are not intended to limit the shape, material, structure, etc. of the present application in any form, and any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments are within the protection scope of the technical scheme of the present application.

Claims

1. A mobile phone theft alarm, comprising an alarm box, a main control chip is fixedly installed in the alarm box, a plurality of USB female seats are inlaidly installed on the main control chip, and a data line is plug-in installed on the USB female seat; characterized in that: The bottom side of the alarm box is fixedly provided with a bottom cover by screws, the middle part of the bottom cover is formed with an air inlet, the left and right sides of the bottom cover are formed with air outlets, the bottom side of the main control chip is fixedly provided with a cooling fan, the cooling fan is located above the air inlet, the cooling fan blows air onto the main control chip and outputs hot air through the air outlets; The alarm box is fixedly provided with an audible and visual alarm module, and the audible and visual alarm module and the main control chip are electrically connected with each other; The data line is provided with two plug-in ports at one end away from the USB female seat, the two plug-in ports are connected in parallel on the data line, one of the plug-in ports is inserted into the input end of the mobile phone for charging, and the other plug-in port is provided with a detector; The detector and the mobile phone are fixedly connected with each other.

2. The mobile phone theft alarm according to claim 1, wherein: The detector is provided with a patch, and the surface of the patch is covered and mounted with 3M glue.

3. The mobile phone theft alarm according to any one of claims 1 or 2, characterized in that: The detector and the data line are fixedly provided with an elastic silica gel band.

4. The mobile phone theft alarm according to claim 3, wherein: The detector comprises a battery, a vibration sensing module and a wireless distance detection module, the battery supplies power to the vibration sensing module and the wireless distance detection module, and one of the plug-in ports charges the battery.

5. The mobile phone theft alarm according to claim 4, wherein: The wireless distance detection module and the main control chip are wirelessly connected through Bluetooth.

6. The mobile phone theft alarm according to any one of claims 1 or 5, wherein: The main control chip adopts an ESP32-C3 chip, and the main control chip is integrated with a Bluetooth 5.0 module and a WiFi 4 module.

7. The mobile phone theft alarm according to claim 1, wherein: The audible and visual alarm module comprises a buzzer and a warning light.

8. The mobile phone theft alarm according to claim 7, characterized in that: The alarm box is formed with a lamp groove, and the warning light is gap-fitted and installed in the lamp groove.

9. The mobile phone theft alarm of claim 1, wherein: The left and right sides of the bottom cover are provided with a plurality of air outlets, the plurality of air outlets are arranged at equal distances from each other, the left and right sides of the inner side of the bottom cover are integrally formed with baffles, and the baffles are arranged above the plurality of air outlets.

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