CN116935550A - Burglar alarm - Google Patents
Burglar alarm Download PDFInfo
- Publication number
- CN116935550A CN116935550A CN202311209742.0A CN202311209742A CN116935550A CN 116935550 A CN116935550 A CN 116935550A CN 202311209742 A CN202311209742 A CN 202311209742A CN 116935550 A CN116935550 A CN 116935550A
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- CN
- China
- Prior art keywords
- needle
- type
- interface
- power supply
- resistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 230000000087 stabilizing effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
- G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
- G08B13/1409—Mechanical actuation by lifting or attempted removal of hand-portable articles for removal detection of electrical appliances by detecting their physical disconnection from an electrical system, e.g. using a switch incorporated in the plug connector
Abstract
The invention relates to an anti-theft alarm device, which is arranged between a power adapter and a mobile terminal and is provided with a first interface and a second interface which are respectively connected with the power adapter and the mobile terminal; the first interface and the second interface are TYPE-C interfaces welded on the circuit board of the burglar alarm, and the connection mode of the two TYPE-C interfaces is as follows: the 1 st needle of TYPE-C1 is connected with the 12 th needle of TYPE-C2 and grounded; the 2 nd needle and the 11 th needle of the TYPE-C1 are mutually connected with the 2 nd needle and the 11 th needle of the TYPE-C2, and a 5V power supply is provided for the circuit board of the burglar alarm; the 5 th needle and the 7 th needle of the TYPE-C1 are mutually connected with the 5 th needle and the 7 th needle of the TYPE-C2; the 6 th and 8 th needles of YPE-C1 are mutually connected with the 6 th and 8 th needles of TYPE-C2. In the invention, the same Type-c is arranged on both sides of the anti-theft alarm device, so that the anti-theft alarm device is convenient to install.
Description
Technical Field
The invention relates to the field of anti-theft alarm, in particular to an anti-theft alarm device for preventing mobile terminals such as mobile phones, tablet computers and the like from being taken away when the mobile terminals are displayed in a sales place.
Background
When a mobile terminal such as a mobile phone and a tablet computer is displayed on a display counter of a sales floor, in order to increase the display time, the mobile terminal needs to be charged in time, and meanwhile, the mobile terminal needs to be lost in order to prevent someone from taking away, therefore, an alarm device is needed at the same time, and an alarm device is needed when the mobile terminal is taken away, therefore, a chargeable anti-theft alarm device for the mobile phone sales floor is provided, patent publication number CN 104517385A discloses the chargeable anti-theft alarm device for the mobile phone sales floor, which comprises an external power interface, an alarm host voltage stabilizing circuit, a singlechip, a detection circuit, an alarm circuit, a switching power supply, an external interface and a connecting wire connected with the external prototype, wherein the external power interface is respectively connected with the alarm host voltage stabilizing circuit, the alarm circuit and the switching power supply, the alarm host voltage stabilizing circuit supplies power for the singlechip and the detection circuit, the detection circuit detects the connection condition of the external prototype through the connecting wire and provides information of the connection condition of the external prototype, the singlechip controls the alarm circuit to alarm after receiving the information of the connection condition of the external prototype, and the switching power supply is connected with the external prototype through the connecting wire and the charging line and the external prototype is combined with the external prototype. And a backup power supply is connected in series between the external power supply interface and the alarm circuit, and the backup power supply provides power for the alarm host voltage stabilizing circuit. As shown in fig. 1, the power adapter 200 charges the mobile terminal 100 in the installed state of the alarm device, the burglar alarm 300 is installed on the charging line, and has two interfaces, a first interface 310 connected to the power adapter 200 at one end and a second interface 320 connected to the mobile terminal at one end, through which the burglar alarm 300 monitors two power lines, including 4 interfaces on the power adapter and the mobile terminal, and once one interface is disconnected, the singlechip can control the alarm circuit to alarm by using a message.
At present, the first interface 310 of the burglar alarm 300 is a Type USB interface, and the second interface 320 is a Micro USB interface, which has the advantage of not being misplaced, because the conventional burglar alarm cannot be misplaced, and it is necessary that the first interface 310 is connected to the power adapter 200, and the second interface 320 is connected to the mobile terminal 100. However, since the burglar alarm apparatus has inputs and outputs, the inputs and outputs cannot be interchanged, which is inconvenient for users.
Disclosure of Invention
Aiming at the defect that the input and output interfaces of the prior anti-theft alarm device cannot be exchanged, the invention provides the anti-theft alarm device which is provided with the same input and output interfaces and adopts TYPE-C interfaces, and when in use, a user does not need to care the direction of the interfaces, thereby being very convenient to use.
The technical scheme adopted by the invention for realizing the technical purpose is as follows: an anti-theft alarm device is arranged between a power adapter and a mobile terminal and is provided with a first interface and a second interface which are respectively connected with the power adapter and the mobile terminal (100); the first interface and the second interface are TYPE-C interfaces welded on the circuit board of the burglar alarm, and the connection mode of the two TYPE-C interfaces is as follows:
the 1 st needle of TYPE-C1 is connected with the 12 th needle of TYPE-C2 and grounded;
the 2 nd needle and the 11 th needle of the TYPE-C1 are mutually connected with the 2 nd needle and the 11 th needle of the TYPE-C2, and a 5V power supply is provided for the circuit board of the burglar alarm;
the 5 th needle and the 7 th needle of the TYPE-C1 are mutually connected with the 5 th needle and the 7 th needle of the TYPE-C2;
the 6 th needle and the 8 th needle of the TYPE-C1 are mutually connected with the 6 th needle and the 8 th needle of the TYPE-C2;
the 12 th needle of TYPE-C1 is connected with the ground in series through a resistor R2 and a capacitor C13;
needle 1 of TYPE-C2 is grounded through resistor R7 and capacitor C15.
Further, in the above-mentioned burglar alarm apparatus: on the circuit board of the anti-theft alarm device, the model of the main control chip U1 is KRD002.
Further, in the above-mentioned burglar alarm apparatus: the 1 st pin and the 24 th pin of the main control chip U1 are respectively connected with a 3V working power supply through a resistor R1 and a resistor R6 and are respectively connected between a resistor R2 and a capacitor C13 and between a resistor R7 and a capacitor C15.
Further, in the above-mentioned burglar alarm apparatus: the circuit board of the anti-theft alarm device is provided with a power supply conversion circuit for converting a 5V power supply into a 3V working power supply.
Further, in the above-mentioned burglar alarm apparatus: the alarm comprises a buzzer BUZ1, and a driving circuit is arranged between the output end of the main control chip U1 for generating an alarm signal and the triggering end of the buzzer; the driving circuit comprises triodes Q1 and Q2 and an inductor L1, wherein the inductor L1 is connected with the wiring end of the buzzer BUZ1 and is respectively connected with two ends of the inductor L1, and the anode is connected with a power supply; a buzzing signal (BZ) generated by a main control chip U1 is connected with a base electrode of a triode Q1, an emitting electrode of the triode Q1 is connected with a base electrode of a triode Q2, collecting electrodes of the triodes Q1 and Q2 are connected with each other, an emitting electrode of the triode Q2 is grounded, a resistor R4 is arranged between the base electrode of the triode Q1 and the emitting electrode of the triode Q2, and collecting electrodes of the triodes Q1 and Q2 are connected with a middle tap of an inductor L1.
In the invention, the same Type-c is arranged on both sides of the anti-theft alarm device, so that the anti-theft alarm device is convenient to install.
The invention will now be described in detail with reference to the drawings and to specific embodiments.
Drawings
FIG. 1 is a diagram of a sales floor for the purpose of preventing a mobile terminal from being stolen;
FIG. 2 is a diagram showing the connection between two interfaces TYPE-C of the burglar alarm in embodiment 1 of the present invention;
FIG. 3 is a wiring diagram of a master control chip in embodiment 1 of the present invention;
FIG. 4 is a voltage converting circuit diagram of embodiment 1 of the present invention;
FIG. 5 is a clock circuit diagram of embodiment 1 of the present invention;
fig. 6 is a circuit diagram of a buzzer driving circuit in embodiment 1 of the present invention.
Detailed Description
The present embodiment is an anti-theft alarm device for anti-theft alarm for a mobile terminal being charged in a sales space, as shown in fig. 1, the anti-theft alarm device 300 is disposed between a power adapter 2 and a mobile terminal 1 being displayed, and the mobile terminal may be a mobile phone, a tablet computer, etc. The power adapter 2 is plugged into a mains supply socket to convert the mains supply into +5v power supply, and charges the mobile terminal through a USB wire, in order to prevent theft of the mobile terminal being displayed, people do not remove the mobile terminal from the display area, the anti-theft alarm device 300 is mounted on a charging wire, namely the USB wire, so that the charged USB wire is divided into two sections, the first section is connected with the power adapter 200 to the anti-theft alarm device 300, the second section is connected with the mobile terminal from the anti-theft alarm device 300 to the mobile terminal 100 being displayed, such as a mobile phone or a tablet personal computer, so that two interfaces are respectively connected with the power adapter 200 or the mobile terminal 100 on the anti-theft alarm device 300, in the embodiment, the two interfaces on the anti-theft alarm device 300 are TYPE-C interfaces, and the special connection mode is adopted, so that the first interface 310 and the second interface 320 on the anti-theft alarm device 300 can be connected with the power adapter 200 or the mobile terminal 100 at random, for example, the second interface 320 is connected with the mobile terminal 200, the mobile terminal is reversely connected with the mobile terminal from the first interface 310 to the mobile terminal, and the mobile terminal 100 is disconnected from the mobile terminal 100 at the same time, and the mobile terminal is prevented from being stolen by the mobile terminal 100 at the same time.
As shown in fig. 2, the connection topology between the first interface 310 and the second interface 320 in this embodiment is provided on the circuit board of the burglar alarm, respectively.
The first interface 310 and the second interface 320 are TYPE-C interfaces welded on the circuit board of the burglar alarm 300, and the connection modes of the two TYPE-C interfaces are as follows:
the 1 st needle of TYPE-C1 is connected with the 12 th needle of TYPE-C2 and grounded;
the 2 nd needle and the 11 th needle of the TYPE-C1 are mutually connected with the 2 nd needle and the 11 th needle of the TYPE-C2, and a 5V power supply is provided for the circuit board of the burglar alarm;
the 5 th needle and the 7 th needle of the TYPE-C1 are mutually connected with the 5 th needle and the 7 th needle of the TYPE-C2;
the 6 th needle and the 8 th needle of the TYPE-C1 are mutually connected with the 6 th needle and the 8 th needle of the TYPE-C2;
the 12 th needle of TYPE-C1 is connected with the ground in series through a resistor R2 and a capacitor C13;
needle 1 of TYPE-C2 is grounded through resistor R7 and capacitor C15.
On the circuit board, the 1 st pin and the 24 th pin of the main control chip U1 are respectively connected between the resistor R2 and the capacitor C13 and between the resistor R7 and the capacitor C15 through wires. In this embodiment, the model of the main control chip U1 is KRD002. The connection diagram of the main control chip U1 is shown in FIG. 3: because the working power supply of the master control chip U1 with the model KRD002 is 3.3V, the power supply adapter provides 5V power supply, electricity is taken from the VBUS in the TYPE-C interface, the power supply is 5V power supply, the 5V output voltage can be converted into 3.3V voltage by utilizing the voltage conversion circuit as shown in figure 4 and output to supply power for the master control chip, the clock signal of the master control chip U1 is provided by the clock circuit as shown in figure 5, and the clock signal generated by the clock circuit is input from the 3 rd pin (LP) and the 4 th pin (LN) of the master control chip U1.
After any one of the four interfaces is disconnected, the main control chip can detect that the alarm signal BZ is immediately generated and output from the pin 22. In this embodiment, the main control chip generates the alarm signal BZ when detecting any one of the interfaces being disconnected, which is possible by such an anti-theft alarm device on the market, and will not be described here.
In the embodiment, the buzzer is used as the alarm, and is provided with a driving signal, and the alarm signal triggers the alarm to alarm.
The driving circuit is shown in fig. 6, and comprises triodes Q1 and Q2 and an inductor L1, wherein the inductor L1 is connected to the wiring end of the buzzer BUZ1 and respectively connected with two ends of the inductor L1, and the anode is connected with a power supply; a buzzing signal BZ generated by a main control chip U1 is connected with a base electrode of a triode Q1, an emitting electrode of the triode Q1 is connected with a base electrode of a triode Q2, collecting electrodes of the triodes Q1 and Q2 are connected with each other, an emitting electrode of the triode Q2 is grounded, a resistor R4 is arranged between the base electrode of the triode Q1 and the emitting electrode of the triode Q2, and collecting electrodes of the triodes Q1 and Q2 are connected with a middle tap of an inductor L1.
Claims (5)
1. An anti-theft alarm device is arranged between a power adapter (200) and a mobile terminal (100) and is provided with a first interface (310) and a second interface (320) which are respectively connected with the power adapter (200) and the mobile terminal (100); the method is characterized in that: the first interface (310) and the second interface (320) are TYPE-C interfaces welded on a circuit board of the anti-theft alarm device (300), and the connection mode of the two TYPE-C interfaces is as follows:
the 1 st needle of TYPE-C1 is connected with the 12 th needle of TYPE-C2 and grounded;
the 2 nd needle and the 11 th needle of the TYPE-C1 are mutually connected with the 2 nd needle and the 11 th needle of the TYPE-C2, and a 5V power supply is provided for the circuit board of the burglar alarm;
the 5 th needle and the 7 th needle of the TYPE-C1 are mutually connected with the 5 th needle and the 7 th needle of the TYPE-C2;
the 6 th needle and the 8 th needle of the TYPE-C1 are mutually connected with the 6 th needle and the 8 th needle of the TYPE-C2;
the 12 th needle of TYPE-C1 is connected with the ground in series through a resistor R2 and a capacitor C13;
needle 1 of TYPE-C2 is grounded through resistor R7 and capacitor C15.
2. The burglar alarm arrangement according to claim 1, characterized in that: on the circuit board of the anti-theft alarm device (300), the model of the main control chip U1 is KRD002.
3. The burglar alarm arrangement according to claim 2, characterized in that: the 1 st pin and the 24 th pin of the main control chip U1 are respectively connected with a 3V working power supply through a resistor R1 and a resistor R6 and are respectively connected between a resistor R2 and a capacitor C13 and between a resistor R7 and a capacitor C15.
4. The burglar alarm arrangement according to claim 2, characterized in that: the circuit board of the anti-theft alarm device (300) is provided with a power supply conversion circuit for converting 5V power supply into 3V working power supply.
5. The burglar alarm arrangement according to any one of claims 2 to 4, characterized in that: the alarm comprises a buzzer BUZ1, and a driving circuit is arranged between the output end of the main control chip U1 for generating an alarm signal and the triggering end of the buzzer; the driving circuit comprises triodes Q1 and Q2 and an inductor L1, wherein the inductor L1 is connected with the wiring end of the buzzer BUZ1 and is respectively connected with two ends of the inductor L1, and the anode is connected with a power supply; a buzzing signal generated by the main control chip U1 is connected with a base electrode of the triode Q1, an emitting electrode of the triode Q1 is connected with a base electrode of the triode Q2, collecting electrodes of the triodes Q1 and Q2 are connected with each other, an emitting electrode of the triode Q2 is grounded, a resistor R4 is arranged between the base electrode of the triode Q1 and the emitting electrode of the triode Q2, and collecting electrodes of the triodes Q1 and Q2 are connected with a middle tap of the inductor L1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311209742.0A CN116935550A (en) | 2023-09-19 | 2023-09-19 | Burglar alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311209742.0A CN116935550A (en) | 2023-09-19 | 2023-09-19 | Burglar alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116935550A true CN116935550A (en) | 2023-10-24 |
Family
ID=88384766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311209742.0A Pending CN116935550A (en) | 2023-09-19 | 2023-09-19 | Burglar alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116935550A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140340225A1 (en) * | 2013-05-17 | 2014-11-20 | Invue Security Products Inc. | Alarming cables, assemblies, and systems |
| CN104517385A (en) * | 2013-09-30 | 2015-04-15 | 天津市雅铁科贸有限公司 | Rechargeable burglar alarm for mobile phone stores |
| US20160371944A1 (en) * | 2013-09-29 | 2016-12-22 | Invue Security Products Inc. | Systems and methods for protecting retail display merchandise from theft |
| CN208903382U (en) * | 2018-10-11 | 2019-05-24 | 杭州朗鸿科技股份有限公司 | A kind of attachment device of the connection external power adapter for commodity anti-theft |
| CN209044813U (en) * | 2018-11-28 | 2019-06-28 | 杭州朗泽安防技术有限公司 | A kind of security system for commodity anti-theft |
| CN209417875U (en) * | 2018-12-09 | 2019-09-20 | 杭州朗泽安防技术有限公司 | A kind of safety device for commodity anti-theft |
| CN209417874U (en) * | 2018-12-09 | 2019-09-20 | 杭州朗泽安防技术有限公司 | A kind of safety device for commodity anti-theft |
| CN212460731U (en) * | 2020-06-18 | 2021-02-02 | 杭州朗鸿科创科技有限公司 | Warning device for commodity theft prevention |
| CN212460730U (en) * | 2020-06-17 | 2021-02-02 | 杭州朗鸿科创科技有限公司 | Safety device for commodity anti-theft |
| CN114465331A (en) * | 2022-04-13 | 2022-05-10 | 广州市科锐达光电技术股份有限公司 | Watch charging seat circuit without voltage drop of anode and cathode |
-
2023
- 2023-09-19 CN CN202311209742.0A patent/CN116935550A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140340225A1 (en) * | 2013-05-17 | 2014-11-20 | Invue Security Products Inc. | Alarming cables, assemblies, and systems |
| US20160371944A1 (en) * | 2013-09-29 | 2016-12-22 | Invue Security Products Inc. | Systems and methods for protecting retail display merchandise from theft |
| CN104517385A (en) * | 2013-09-30 | 2015-04-15 | 天津市雅铁科贸有限公司 | Rechargeable burglar alarm for mobile phone stores |
| CN208903382U (en) * | 2018-10-11 | 2019-05-24 | 杭州朗鸿科技股份有限公司 | A kind of attachment device of the connection external power adapter for commodity anti-theft |
| CN209044813U (en) * | 2018-11-28 | 2019-06-28 | 杭州朗泽安防技术有限公司 | A kind of security system for commodity anti-theft |
| CN209417875U (en) * | 2018-12-09 | 2019-09-20 | 杭州朗泽安防技术有限公司 | A kind of safety device for commodity anti-theft |
| CN209417874U (en) * | 2018-12-09 | 2019-09-20 | 杭州朗泽安防技术有限公司 | A kind of safety device for commodity anti-theft |
| CN212460730U (en) * | 2020-06-17 | 2021-02-02 | 杭州朗鸿科创科技有限公司 | Safety device for commodity anti-theft |
| CN212460731U (en) * | 2020-06-18 | 2021-02-02 | 杭州朗鸿科创科技有限公司 | Warning device for commodity theft prevention |
| CN114465331A (en) * | 2022-04-13 | 2022-05-10 | 广州市科锐达光电技术股份有限公司 | Watch charging seat circuit without voltage drop of anode and cathode |
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