CN102855718A - Practical household anti-theft alarm - Google Patents
Practical household anti-theft alarm Download PDFInfo
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- CN102855718A CN102855718A CN2012103430801A CN201210343080A CN102855718A CN 102855718 A CN102855718 A CN 102855718A CN 2012103430801 A CN2012103430801 A CN 2012103430801A CN 201210343080 A CN201210343080 A CN 201210343080A CN 102855718 A CN102855718 A CN 102855718A
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Abstract
The invention relates to a practical household anti-theft alarm, and belongs to the technical field of anti-theft alarming. According to the technical scheme of the invention, the practical household anti-theft alarm comprises a detection launching module for detecting illegal entering and launching an anti-theft triggering signal, wherein the detection launching module is wirelessly connected with a receiving and alarming module; and when the detection launching module launches the anti-theft triggering signal to the receiving and alarming module, the receiving and alarming module carries out oscillation alarm and audible alarm after decoding and judging the anti-theft triggering signal. According to the practical household anti-theft alarm disclosed by the invention, the passive sensing detection is adopted, thus improving the accuracy and prolonging the service life; a chip with address coding and decoding functions is also adopted, thus solving the problem of false alarm of multiple houses; a lithium battery charging and discharging protective circuit is designed, so that the service life of a lithium battery is prolonged, and the use safety is improved; and stable working voltage is supplied for a portable anti-theft receiving circuit by a boost circuit, so that the anti-theft receiving circuit is simple in design, low in cost, timely in alarm and suitable for being used by most houses.
Description
Technical field
The present invention relates to a kind of burglar alarm, especially a kind of household safety alarming devices of practicality belongs to the technical field of burglar alarm.
Background technology
At present, the proposition of technology of Internet of things has promoted the popularization of Smart Home, so that people are more and more stronger to the demand of domestic. applications.In addition, sensing technology is increasingly mature, has promoted the application of security protection, especially at family's safety-security area.But a lot of solutions all are to utilize GPRS or 3G network to communicate, and testing cost is also higher, has limited applying of sensing technology.Utilize detection and type of alarm simple, low-cost, low-power consumption can become a kind of trend undoubtedly at household safety-protection.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of household safety alarming devices of practicality is provided, it is simple and compact for structure, and use cost is low, and is easy to operate, and wide accommodation is safe and reliable.
According to technical scheme provided by the invention, the household safety alarming devices of described practicality comprises for detection of the detection transmitter module that illegally enters and launch antitheft trigger pip described detection transmitter module and receiving alarm module wireless connections; When described detection transmitter module is launched antitheft trigger pip to receiving alarm module, vibrate after receiving alarm module is judged antitheft trigger pip decoding and report to the police and audible alarm.
Described detection transmitter module comprises sensing unit, wireless encoding transmitter unit and power module, and the output terminal of described sensing unit links to each other with the input end of wireless encoding transmitter unit, and power module links to each other with the power end of wireless encoding transmitter unit; Receiving alarm module comprises wireless receiving decoding unit, vibrations alarm unit, audible alarm unit, booster circuit, charge protection unit and battery; The output terminal of described wireless receiving decoding unit links to each other with vibrations alarm unit and audible alarm unit; The power end of wireless receiving decoding unit links to each other with booster circuit, and battery links to each other with booster circuit by the charge and discharge protecting unit.
Described battery adopts the 3.7V lithium battery.Described battery and low-voltage alarm unit interconnect.
Described sensing unit comprise permanent magnet and with described permanent magnet between mate the non-contact switch be connected.Described non-contact switch comprises tongue tube.
Described wireless encoding transmitter unit comprises the wireless encoding chip, and described wireless encoding chip adopts the PT2262 chip; The output terminal of wireless encoding chip links to each other with the power emission circuit, and the output terminal of wireless encoding chip links to each other with the base terminal of the second triode by the tenth resistance in the power emission circuit; The emitter of the second triode is by the 12 resistance eutral grounding, and the two ends of described the 12 resistance are parallel with the first electric capacity; Also by the 11 resistance eutral grounding, the two ends of described the 11 resistance are parallel with the first crystal oscillator to the base terminal of the second triode; The collector terminal of the second triode links to each other with+5V power supply by the first inductance, and the base terminal of the second triode passes through the 3rd electric capacity and links to each other with emitting antenna; The two ends of described the first inductance are parallel with the second electric capacity; The base terminal of the second triode links to each other with the emitter terminal of the second triode by the tenth electric capacity; The power end of wireless encoding chip links to each other with+5V power supply; The OSC1 end of wireless encoding chip links to each other with the OSC2 end of wireless encoding chip by the 6th resistance; The GND end ground connection of wireless encoding chip; The D0 of wireless encoding chip end links to each other with+5V power supply by the 7th resistance, the D1 of wireless encoding chip end links to each other with+5V power supply by the 8th resistance, the D2 of wireless encoding chip end links to each other with+5V voltage by the 9th resistance, and the D3 of wireless encoding chip holds and links to each other with the output terminal of sensing unit.
Described booster circuit comprises the chip that boosts, the GND end ground connection of the described chip that boosts, the end of input end by the second inductance of chip of boosting links to each other, and the other end of the second inductance is by the 5th capacity earth, and the end that the second inductance links to each other with the 5th electric capacity links to each other with the output terminal of charge and discharge protecting unit; The input end of chip of boosting also links to each other with the anode tap of the second voltage stabilizing diode, and the cathode terminal of the second voltage stabilizing diode links to each other with the output terminal of the chip that boosts; Boost the output terminal of chip by the 4th capacity earth, and the two ends of described the 4th electric capacity are parallel with the second electrochemical capacitor, and the positive terminal of the second electrochemical capacitor links to each other the negative pole end ground connection of the second electrochemical capacitor with the output terminal of the chip that boosts; Output terminal output+5V the voltage of chip boosts.
Described serve as the discharge comprise that circuit comprises charge and discharge protective chip, the VSS end ground connection of described charge and discharge protective chip, and link to each other with the negative pole end of battery respectively, the positive terminal of battery links to each other with the vdd terminal of charge and discharge protective chip, and the two ends of battery are parallel with the 6th electric capacity; The vdd terminal of charge and discharge protective chip links to each other by an end of the 14 resistance, and the other end of described the 14 resistance is by the 3rd electrochemical capacitor ground connection, and the BATN of charge and discharge protective chip holds ground connection, and the CSI end of charge and discharge protective chip is by the 15 resistance eutral grounding.
Described wireless encoding receives the unit and comprises receiving chip and decoding chip; The SEL1 end of described receiving chip links to each other with the second crystal oscillator; The SELO end of receiving chip, VSSRF hold equal ground connection; The ANT end of receiving chip links to each other with receiving antenna, and VDDRF end and the vdd terminal of receiving chip all link to each other with the output terminal of booster circuit, and the CTH end of receiving chip is by the 7th capacity earth; The SHUT of receiving chip end and VSS hold equal ground connection, and the CAGC end of receiving chip is by the 8th capacity earth, and the D0 of receiving chip end is by the 9th capacity earth, and the two ends of the 9th electric capacity and the 16 resistance is arranged; The D0 end of receiving chip links to each other with the DIN end of decoding chip; The OSC1 end of decoding chip links to each other with the OSC2 end of decoding chip by the 17 resistance; The VCC end of decoding chip links to each other with the output terminal of booster circuit, the GND end ground connection of decoding chip.
Advantage of the present invention: adopt passive sensing to detect, improve accuracy and serviceable life; And adopt the chip with address codec functions, and having solved the problem of many wrong reports, design lithium battery charge and discharge protective circuit prolongs the lithium battery life-span, improves the safety of using.Booster circuit provides stable operating voltage for the Portable alarm receiving circuit, simplicity of design, and cost is low, reports to the police in time, is fit to most families and uses.
Description of drawings
Fig. 1 is structured flowchart of the present invention.
Fig. 2 is a kind of implementation synoptic diagram of sensing unit of the present invention.
Fig. 3 is the circuit theory diagrams of wireless encoding transmitter unit of the present invention.
Fig. 4 is the circuit theory diagrams of booster circuit of the present invention.
Fig. 5 is the circuit theory diagrams of charge and discharge protecting of the present invention unit.
Fig. 6 is the circuit theory diagrams of wireless receiving decoding unit of the present invention.
Fig. 7 is that the present invention prevents from reporting by mistake structured flowchart.
Embodiment
The invention will be further described below in conjunction with concrete drawings and Examples.
As shown in Figure 1: the invention provides a kind of simply, household safety alarming devices cheaply, it comprises for detection of the detection transmitter module that illegally enters and launch antitheft trigger pip, described detection transmitter module and receiving alarm module wireless connections; When described detection transmitter module is launched antitheft trigger pip to receiving alarm module, vibrate after receiving alarm module is judged antitheft trigger pip decoding and report to the police and audible alarm.
Particularly, described detection transmitter module comprises sensing unit, wireless encoding transmitter unit and power module, and the output terminal of described sensing unit links to each other with the input end of wireless encoding transmitter unit, and power module links to each other with the power end of wireless encoding transmitter unit; Power module links to each other with outside civil power by microswitch 5.When microswitch 5 disconnected, whole detection transmitter module can not launched antitheft trigger pip, so receiving alarm module can not shake yet and report to the police and audible alarm, avoided false alarm under normal circumstances.
Receiving alarm module comprises wireless receiving decoding unit, vibrations alarm unit, audible alarm unit, booster circuit, charge protection unit and battery; The output terminal of described wireless receiving decoding unit links to each other with vibrations alarm unit and audible alarm unit; The power end of wireless receiving decoding unit links to each other with booster circuit, and battery links to each other with booster circuit by the charge and discharge protecting unit.
Described battery adopts the 3.7V lithium battery.Described battery and low-voltage alarm unit interconnect.
Such as Fig. 2 ~ shown in Figure 6: take the door folding condition detect as example, detailed process of the present invention is described.
As shown in Figure 2: permanent magnet 1 is installed in the door 2, non-contact switch 4 is installed on the doorframe 3, non-contact switch 4 is tongue tube in the embodiment of the invention, the structure that also can adopt other to cooperate with permanent magnet 1 during implementation.When door 2 and doorframe 3 normally contact, permanent magnet 1 and non-contact switch 4 had certain distance, and described certain distance refers to that permanent magnet 1 can allow non-contact switch 4 closures of often opening.When door 2 was illegally opened, the permanent magnet 1 in the door 2 became large with the distance of non-contact switch 4, can not reach to allow the remain stationary distance of attitude of non-contact switch 4, and at this moment, non-contact switch 4 states often become to be opened.One end ground connection of described non-contact switch 4, the other end links to each other with the input end of Sheffer stroke gate 74LS04, and the input end of Sheffer stroke gate 74LS04 also links to each other with power supply VCC by resistance R, and the output terminal of Sheffer stroke gate 74LS04 links to each other with the input end of wireless encoding transmitter unit.When non-contact switch 4 is normally off, the output terminal of Sheffer stroke gate 74LS04 output high level, when non-contact switch 4 is normally open, the output terminal output low level of Sheffer stroke gate 74LS04.The wireless encoding transmitter unit is when receiving the low level signal of sensing unit, and then the wireless encoding transmitter unit is exported antitheft trigger pip.When sensing unit is installed on other zones of family or position, also can adopt the fit system of permanent magnet 1 and non-contact switch 4, cooperating of permanent magnet 1 and non-contact switch 4 realizes passive detection, also can other induction form, enumerate no longer one by one herein.
As shown in Figure 3: described wireless encoding transmitter unit comprises wireless encoding chip IC 1, and described wireless encoding chip IC 1 adopts the PT2262 chip; The output terminal of wireless encoding chip IC 1 links to each other with the power emission circuit, and the dotted line frame middle part among Fig. 3 is divided into the power emission circuit.The output terminal of wireless encoding chip IC 1 links to each other with the base terminal of the second triode Q2 by the tenth resistance R 10 in the power emission circuit; The emitter of the second triode Q2 is by the 12 resistance R 12 ground connection, and the two ends of described the 12 resistance R 12 are parallel with the first capacitor C 1; Also by the 11 resistance R 11 ground connection, the two ends of described the 11 resistance R 11 are parallel with the first crystal oscillator CY1 to the base terminal of the second triode Q2; The collector terminal of the second triode Q2 links to each other with+5V power supply by the first inductance L 1, and the base terminal of the second triode Q2 passes through the 3rd capacitor C 3 and links to each other with emitting antenna; The two ends of described the first inductance L 1 are parallel with the second capacitor C 2; The base terminal of the second triode Q2 links to each other with the emitter terminal of the second triode Q2 by the tenth capacitor C 10; The power end of wireless encoding chip IC 1 links to each other with+5V power supply; The OSC1 end of wireless encoding chip IC 1 links to each other with the OSC2 end of wireless encoding chip IC 1 by the 6th resistance R 6; The GND end ground connection of wireless encoding chip IC 1; The D0 of wireless encoding chip IC 1 end links to each other with+5V power supply by the 7th resistance R 7, the D1 of wireless encoding chip IC 1 end links to each other with+5V power supply by the 8th resistance R 8, the D2 of wireless encoding chip IC 1 end links to each other with+5V voltage by the 9th resistance R 9, and the D3 of wireless encoding chip IC 1 holds and links to each other with the output terminal of sensing unit.The control pin of wireless encoding chip IC 1/TE end is connected with ground.
As shown in Figure 4 and Figure 5: be the circuit theory diagrams of booster circuit of the present invention and charge-discharge protection circuit, described booster circuit comprises the chip IC 2 of boosting, and it is the chip of 2101A that the described chip IC 2 of boosting is selected model; The GND end ground connection of the described chip IC 2 of boosting, the input end of the chip IC of boosting 2 links to each other by an end of the second inductance L 2, the other end of the second inductance L 2 is by the 5th capacitor C 5 ground connection, namely the end that links to each other with the 5th capacitor C 5 of the other end of the second inductance L 2 links to each other with+5V/3.7V voltage, described+5V/3.7V be when charge and discharge protective chip IC5 during to the 3.7V lithium cell charging voltage be+5V, voltage is 3.7V when stopping to charge, and the end that the second inductance L 2 links to each other with the 5th capacitor C 5 links to each other with the output terminal of charge and discharge protecting unit; The input end of the chip IC of boosting 2 also links to each other with the anode tap of the second voltage stabilizing diode D2, and the cathode terminal of the second voltage stabilizing diode D2 links to each other with the output terminal of the chip IC 2 of boosting; The output terminal of the chip IC of boosting 2 is by the 4th capacitor C 4 ground connection, and the two ends of described the 4th capacitor C 4 are parallel with the second electrochemical capacitor E2, and the positive terminal of the second electrochemical capacitor E2 links to each other the negative pole end ground connection of the second electrochemical capacitor E2 with the output terminal of the chip IC 2 of boosting; Output terminal output+5V the voltage of the chip IC of boosting 2.
Described serve as the discharge comprise that circuit comprises charge and discharge protective chip IC5, it is the chip of SC8821 that charge protection chip IC 5 is selected model.The VSS end ground connection of described charge and discharge protective chip IC5, and link to each other with the negative pole end of battery respectively, the positive terminal of battery links to each other with the vdd terminal of charge and discharge protective chip IC5, and the two ends of battery are parallel with the 6th capacitor C 6; The vdd terminal of charge and discharge protective chip IC5 links to each other by an end of the 14 resistance R 14; the other end of described the 14 resistance R 14 is by the 3rd electrochemical capacitor E3 ground connection; the BATN end ground connection of charge and discharge protective chip IC5, the CSI end of charge and discharge protective chip IC5 is by the 15 resistance R 15 ground connection.The end that the end that the positive terminal of the 3rd electrochemical capacitor E3 links to each other with the 14 resistance R 14 and the second inductance L 2 link to each other with the 5th capacitor C 5 links to each other, and namely the positive terminal place of the 3rd electrochemical capacitor E3 can obtain+voltage of 5V or 3.7V.
3.7V lithium battery of the present invention is in charging process, if improper use will produce a large amount of bubbles, reduces the serviceable life of lithium battery, has buried simultaneously potential safety hazard; 3.7V if the lithium battery discharge is too much, will directly affect the ionization activity of lithium battery interior lithium ion, cause the damage of lithium battery.Therefore, when using the 3.7V lithium battery, it has been designed charge-discharge protection circuit.Adopt special-purpose single-lithium-battery pond charge and discharge protective chip SC8821, when battery charging voltage arrived 4.28V, charging was turn-offed; When battery discharge voltage during to 2.5V, discharge is turn-offed.
As shown in Figure 6: described wireless encoding receives the unit and comprises receiving chip IC3 and decoding chip IC4, and receiving chip IC3 adopts integrated receiving chip MICRF002, and decoding chip IC4 adopts PT2272; The SEL1 end of described receiving chip IC3 links to each other with the second crystal oscillator CY2; The SELO end of receiving chip IC3, VSSRF hold equal ground connection; The ANT end of receiving chip IC3 links to each other with receiving antenna, and VDDRF end and the vdd terminal of receiving chip IC3 all link to each other with the output terminal of booster circuit, and the CTH end of receiving chip IC3 is by the 7th capacitor C 7 ground connection; The SHUT of receiving chip IC3 end and VSS hold equal ground connection, and the CAGC end of receiving chip IC3 is by the 8th capacitor C 8 ground connection, and the D0 of receiving chip IC3 end is by the 9th capacitor C 9 ground connection, and the two ends of the 9th capacitor C 9 and the 16 resistance R 16 is arranged; The D0 end of receiving chip IC3 links to each other with the DIN end of decoding chip IC4; The OSC1 end of decoding chip IC4 links to each other with the OSC2 end of decoding chip IC4 by the 17 resistance R 17; The VCC end of decoding chip IC4 links to each other with the output terminal of booster circuit, the GND end ground connection of decoding chip IC4.
As shown in Figure 7, for solution never is the wrong report that non-method is opened the door and caused, the present invention has designed linked switch, namely can control the microswitch 5 that is connected between power module and civil power, described microswitch 5 is subjected to anti-theft lock 6 controls, and when anti-theft lock 6 was in the lock state, microswitch 5 was touched in the end of anti-theft lock 6, so that power module connects civil power, this moment, burglar alarm of the present invention was started working.When anti-theft lock 6 is in release, because the position relationship of anti-theft lock 6, so that microswitch 5 disconnects; After microswitch 5 disconnected, the cut-out civil power was connected with power module, and this moment, burglar alarm quit work; Thereby the false alarm that causes in the time of can avoiding the normal door operation.When alarm of the present invention being used in other zones of family, then the engagement process of the corresponding microswitch 5 of corresponding consideration is enumerated herein no longer one by one.
The present invention adopts passive sensing to detect, and improves accuracy and serviceable life; And have wireless coded excitation unit and wireless receiving decoding unit to cooperate realization geocoding and address decoder, and having solved the problem of many wrong reports, design lithium battery charge and discharge protective circuit prolongs the lithium battery life-span, improves the safety of using.Booster circuit provides stable operating voltage for the Portable alarm receiving circuit.In a word, household safety alarming devices of the present invention, simplicity of design, cost is low, reports to the police in time, is fit to most families and uses.
Claims (10)
1. the household safety alarming devices of a practicality is characterized in that: comprise for detection of the detection transmitter module that illegally enters and launch antitheft trigger pip described detection transmitter module and receiving alarm module wireless connections; When described detection transmitter module is launched antitheft trigger pip to receiving alarm module, vibrate after receiving alarm module is judged antitheft trigger pip decoding and report to the police and audible alarm.
2. the household safety alarming devices of practicality according to claim 1, it is characterized in that: described detection transmitter module comprises sensing unit, wireless encoding transmitter unit and power module, the output terminal of described sensing unit links to each other with the input end of wireless encoding transmitter unit, and power module links to each other with the power end of wireless encoding transmitter unit; Receiving alarm module comprises wireless receiving decoding unit, vibrations alarm unit, audible alarm unit, booster circuit, charge protection unit and battery; The output terminal of described wireless receiving decoding unit links to each other with vibrations alarm unit and audible alarm unit; The power end of wireless receiving decoding unit links to each other with booster circuit, and battery links to each other with booster circuit by the charge and discharge protecting unit.
3. the household safety alarming devices of practicality according to claim 1 is characterized in that: described battery employing 3.7V lithium battery.
4. according to claim 2 or the household safety alarming devices of 3 described practicalities, it is characterized in that: described battery and low-voltage alarm unit interconnect.
5. the household safety alarming devices of practicality according to claim 2 is characterized in that: described sensing unit comprise permanent magnet (1) and with described permanent magnet (1) between mate the non-contact switch (4) that is connected.
6. the household safety alarming devices of practicality according to claim 5, it is characterized in that: described non-contact switch (4) comprises tongue tube.
7. the household safety alarming devices of practicality according to claim 2, it is characterized in that: described wireless encoding transmitter unit comprises wireless encoding chip (IC1), described wireless encoding chip (IC1) adopts the PT2262 chip; The output terminal of wireless encoding chip (IC1) links to each other with the power emission circuit, and the output terminal of wireless encoding chip (IC1) links to each other with the base terminal of the second triode (Q2) by the tenth resistance (R10) in the power emission circuit; The emitter of the second triode (Q2) is by the 12 resistance (R12) ground connection, and the two ends of described the 12 resistance (R12) are parallel with the first electric capacity (C1); Also by the 11 resistance (R11) ground connection, the two ends of described the 11 resistance (R11) are parallel with the first crystal oscillator (CY1) to the base terminal of the second triode (Q2); The collector terminal of the second triode (Q2) links to each other with+5V power supply by the first inductance (L1), and the base terminal of the second triode (Q2) passes through the 3rd electric capacity (C3) and links to each other with emitting antenna; The two ends of described the first inductance (L1) are parallel with the second electric capacity (C2); The base terminal of the second triode (Q2) links to each other with the emitter terminal of the second triode (Q2) by the tenth electric capacity (C10); The power end of wireless encoding chip (IC1) links to each other with+5V power supply; The OSC1 end of wireless encoding chip (IC1) links to each other with the OSC2 end of wireless encoding chip (IC1) by the 6th resistance (R6); The GND end ground connection of wireless encoding chip (IC1); The D0 of wireless encoding chip (IC1) end links to each other with+5V power supply by the 7th resistance (R7), the D1 of wireless encoding chip (IC1) end links to each other with+5V power supply by the 8th resistance (R8), the D2 of wireless encoding chip (IC1) end links to each other with+5V voltage by the 9th resistance (R9), and the D3 of wireless encoding chip (IC1) holds and links to each other with the output terminal of sensing unit.
8. the household safety alarming devices of practicality according to claim 2, it is characterized in that: described booster circuit comprises the chip that boosts (IC2), the GND end ground connection of the described chip that boosts (IC2), the end of input end by the second inductance (L2) of chip (IC2) of boosting links to each other, the other end of the second inductance (L2) is by the 5th electric capacity (C5) ground connection, and the end that the second inductance (L2) links to each other with the 5th electric capacity (C5) links to each other with the output terminal of charge and discharge protecting unit; The input end of chip (IC2) of boosting also links to each other with the anode tap of the second voltage stabilizing diode (D2), and the cathode terminal of the second voltage stabilizing diode (D2) links to each other with the output terminal of the chip that boosts (IC2); Boost the output terminal of chip (IC2) by the 4th electric capacity (C4) ground connection, the two ends of described the 4th electric capacity (C4) are parallel with the second electrochemical capacitor (E2), and the positive terminal of the second electrochemical capacitor (E2) links to each other with the output terminal of the chip that boosts (IC2), the negative pole end ground connection of the second electrochemical capacitor (E2); Output terminal output+5V the voltage of chip (IC2) boosts.
9. the household safety alarming devices of practicality according to claim 2, it is characterized in that: described serve as the discharge comprise that circuit comprises charge and discharge protective chip (IC5), the VSS end ground connection of described charge and discharge protective chip (IC5), and link to each other with the negative pole end of battery respectively, the positive terminal of battery links to each other with the vdd terminal of charge and discharge protective chip (IC5), and the two ends of battery are parallel with the 6th electric capacity (C6); The vdd terminal of charge and discharge protective chip (IC5) links to each other by an end of the 14 resistance (R14); the other end of described the 14 resistance (R14) is by the 3rd electrochemical capacitor (E3) ground connection; the BATN end ground connection of charge and discharge protective chip (IC5), the CSI end of charge and discharge protective chip (IC5) is by the 15 resistance (R15) ground connection.
10. the household safety alarming devices of practicality according to claim 1, it is characterized in that: described wireless encoding receives the unit and comprises receiving chip (IC3) and decoding chip (IC4); The SEL1 end of described receiving chip (IC3) links to each other with the second crystal oscillator (CY2); The SELO end of receiving chip (IC3), VSSRF hold equal ground connection; The ANT end of receiving chip (IC3) links to each other with receiving antenna, and VDDRF end and the vdd terminal of receiving chip (IC3) all link to each other with the output terminal of booster circuit, and the CTH end of receiving chip (IC3) is by the 7th electric capacity (C7) ground connection; SHUT end and the VSS of receiving chip (IC3) hold equal ground connection, the CAGC end of receiving chip (IC3) is by the 8th electric capacity (C8) ground connection, the D0 of receiving chip (IC3) end is by the 9th electric capacity (C9) ground connection, and the two ends of the 9th electric capacity (C9) and the 16 resistance (R16) is arranged; The D0 end of receiving chip (IC3) links to each other with the DIN end of decoding chip (IC4); The OSC1 end of decoding chip (IC4) links to each other with the OSC2 end of decoding chip (IC4) by the 17 resistance (R17); The VCC end of decoding chip (IC4) links to each other with the output terminal of booster circuit, the GND end ground connection of decoding chip (IC4).
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| CN2012103430801A CN102855718A (en) | 2012-09-14 | 2012-09-14 | Practical household anti-theft alarm |
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| CN2012103430801A CN102855718A (en) | 2012-09-14 | 2012-09-14 | Practical household anti-theft alarm |
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| CN103903374A (en) * | 2014-03-31 | 2014-07-02 | 北京工业大学 | Ancient tomb robbing prevention device |
| WO2016095190A1 (en) * | 2014-12-19 | 2016-06-23 | 华为技术有限公司 | Anti-theft method and device |
| US10319215B2 (en) | 2014-12-19 | 2019-06-11 | Huawei Technologies Co., Ltd. | Anti-theft method and apparatus |
| US10839675B2 (en) | 2014-12-19 | 2020-11-17 | Huawei Technologies Co., Ltd. | Anti-theft method and apparatus |
| US10964200B2 (en) | 2014-12-19 | 2021-03-30 | Huawei Technologies Co., Ltd. | Anti-theft method and apparatus |
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