CN101794492B - Alarm triggering device and automatic energy-saving method thereof - Google Patents
Alarm triggering device and automatic energy-saving method thereof Download PDFInfo
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- CN101794492B CN101794492B CN2010101246566A CN201010124656A CN101794492B CN 101794492 B CN101794492 B CN 101794492B CN 2010101246566 A CN2010101246566 A CN 2010101246566A CN 201010124656 A CN201010124656 A CN 201010124656A CN 101794492 B CN101794492 B CN 101794492B
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Abstract
The invention discloses an alarm triggering device, which comprises a singlechip, and a three-axis acceleration sensor, a clock oscillation circuit, a sound alarming circuit and a light prompting circuit which are electrically connected with the singlechip respectively. The three-axis acceleration sensor is used for inputting displacement signals of an X axis, a Y axis and a Z axis and clock signals to the singlechip; and the singlechip triggers the sound alarming circuit and the light prompting circuit according to the displacement signals of the three-axis acceleration sensor. The invention also discloses an automatic energy-saving method for the alarm triggering device, which comprises the following steps: if the displacement of the three-axis acceleration sensor is changed, the three-axis acceleration sensor sends low-level interrupt signals to the singlechip, and the singlechip triggers the sound alarming circuit and the light prompting circuit after receiving the low-level interrupt signals; and if the displacement of the three-axis acceleration sensor is not changed, the singlechip is in a sleep low-power consumption state. The alarm triggering device has the advantages of convenient installation and high safety.
Description
Technical field
The present invention relates to the security alarm field, or rather, relate to a kind of alarm triggering device and automatic energy-saving method thereof.
Background technology
At present a kind of important alarm triggering device in security alarm field mainly is made up of detector and magnet or other touch switch.After the bar magnet trigger gate magnetic main body tongue tube work of motion, warning message to be launched with high frequency transmission circuit, main frame receives alerting signal to begin to report to the police.
There are some inconvenient factors in such device to the user: the necessary mounted in pairs of detector and bar magnet, in case magnetic stripe drops, can't trigger warning; Trouble is installed, the position of the installation palpus alignment detector main body tongue tube of magnet, both can not can receive the restriction of concrete installation site greater than 15mm like this at distance; If be installed in the iron door window position, may cause magnet to demagnetize fast and the reduction that transmits, influence warning function; Because detector and magnetic stripe adopt double faced adhesive tape to stick on fixing position (for example door, window etc.), are difficult to be installed on the valuables, open door, window, drawer, cabinet for the illegal visit person of going into, move or behaviors such as carrying valuables, proof box, be difficult to take precautions against.
Summary of the invention
Goal of the invention: technical matters to be solved by this invention is the deficiency to prior art, and a kind of alarm triggering device and automatic energy-saving method thereof are provided.
Technical scheme: the invention discloses a kind of alarm triggering device, comprise single-chip microcomputer and the 3-axis acceleration sensor that is electrically connected with single-chip microcomputer respectively, clock oscillation, audible alarm circuit, light prompt circuit; Said 3-axis acceleration sensor is used to export the displacement signal and the clock signal of X axle, Y axle, Z axle and gives single-chip microcomputer; Said single-chip microcomputer triggers audible alarm circuit and light prompt circuit according to the displacement signal of 3-axis acceleration sensor.
Among the present invention, preferably, said 3-axis acceleration sensor comprises X axle sensor, Y axle sensor and the Z axle sensor that connects multiplexer respectively, and said multiplexer is connected in series capacitance voltage converter, amplifier, analog to digital converter and I successively
2The C bus, said capacitance voltage converter is connected clock generator respectively with amplifier, and said clock generator connects crystal oscillator respectively; Said analog to digital converter and I
2The C bus connects logic control element respectively; Said logic control element is connected with gain amplifier, skew adjustment unit, X axle sensor, Y axle sensor and Z axle sensor respectively; Said I
2C bus difference clock signal and displacement data signal are to single-chip microcomputer.
Among the present invention, preferably, said control logic module output look-at-me is to single-chip microcomputer.
Among the present invention, another kind of scheme, said 3-axis acceleration sensor comprises that model is the sensor chip of MMA7660FC, the difference clock signal of said sensor chip and displacement data signal are to single-chip microcomputer.Said sensor chip output look-at-me is to single-chip microcomputer.
Among the present invention, said clock oscillation comprises first electric capacity, second electric capacity and crystal oscillator; Said first electric capacity and second electric capacity are used for LPF; Said crystal oscillator connects 12 pin of single-chip microcomputer.
Among the present invention, preferably, said audible alarm circuit comprises triode and hummer; The base stage of said triode connects single-chip microcomputer, and collector is connected with said hummer.
Among the present invention, preferably, said light prompt circuit comprises the light emitting diode that is connected with single-chip microcomputer.
The invention also discloses a kind of automatic energy-saving method of alarm triggering device; May further comprise the steps: if 3-axis acceleration sensor is subjected to displacement variation; Then send the low level look-at-me to single-chip microcomputer, single-chip microcomputer triggers audible alarm circuit and light prompt circuit after receiving the low level look-at-me;
Otherwise single-chip microcomputer is in the dormancy low power consumpting state.
Beneficial effect: alarm triggering device of the present invention adopts three low gravity digital acceleration sensors; Unique energy-saving module and energy-conservation software have been the present invention relates to simultaneously; Make the single unit system power consumption very low, compare with the conventional batteries driving arrangement and have incomparable superiority.It is convenient, flexible that device according to the invention is installed, and can independently install, and need not visual induction accessories such as magnetic stripe, can be installed on the irony door and window, avoids magnetic stripe to be installed in the shortcoming that the demagnetization of irony door and window influences warning function.And the present invention to take precautions against scope wide; But the installation site expands to each places such as valuables by opening and closing devices such as door, windows; Because adopted digitized alarm triggering device; Make general personnel only on product appearance, can't discern whether alarm triggering device has been installed, increased the disguise of product, make protected article more safe.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done specifying further, above-mentioned and/or otherwise advantage of the present invention will become apparent.
Fig. 1 is the circuit theory diagrams of an embodiment of the present invention.
Fig. 2 is the schematic diagram of the another kind of embodiment of 3-axis acceleration sensor part of the present invention.
Embodiment:
As shown in Figure 1, the invention discloses a kind of alarm triggering device, comprise single-chip microcomputer and the 3-axis acceleration sensor that is electrically connected with single-chip microcomputer respectively, clock oscillation, audible alarm circuit, light prompt circuit; Said 3-axis acceleration sensor is used to export the displacement signal and the clock signal of X axle, Y axle, Z axle and gives single-chip microcomputer; Said single-chip microcomputer triggers audible alarm circuit and light prompt circuit according to the displacement signal of 3-axis acceleration sensor.Said clock oscillation comprises first electric capacity, second electric capacity and crystal oscillator; Said first electric capacity and second electric capacity are used for LPF; Said crystal oscillator connects 12 pin of single-chip microcomputer.Said audible alarm circuit comprises triode and hummer; The base stage of said triode connects single-chip microcomputer, and collector is connected with said hummer.Said light prompt circuit comprises with single-chip microcomputer and is connected light emitting diode.
As shown in Figure 1, one embodiment of the present invention, said 3-axis acceleration sensor comprises that model is the 3D-MEMS acceleration sensor chip of Freescale MMA7660FC, the difference clock signal of said sensor chip and displacement data signal are to single-chip microcomputer.Said sensor chip output look-at-me is to single-chip microcomputer.
More particularly, 1 pin of the master chip U1 of three low gravity digital acceleration sensors, 4 pin ground connection; 3 pin, 9 pin connect power supply; 5 pin output look-at-me/INT; The 7 pin carry-out bit shift numbers of it is believed that, 6 pin clock signals.The 14 pin ground connection of single-chip microcomputer U2,1 pin connects power supply.First capacitor C 1, second capacitor C 2, the 3rd resistance R 3, crystal oscillator Y1 form the single-chip microcomputer clock oscillation; Wherein 14 pin of single-chip microcomputer connect an end of first capacitor C 1 and second capacitor C 2 respectively; The other end of second capacitor C 2 connects 12 pin of single-chip microcomputer, and an end of 11 pin, the 3rd electric capacity and the crystal oscillator of the other end connection single-chip microcomputer of first capacitor C 1 is connected 11 pin of the 12 pin other ends connection single-chip microcomputer of single-chip microcomputer.Crystal oscillator Y1 uses as the clock of single-chip microcomputer, connects 12 pin of single-chip microcomputer, and first capacitor C 1, second capacitor C 2 are as the effect of LPF.The end of hummer B1 is connected with the collector of triode Q1, and another termination power of hummer, the collector of triode Q1 connect 5 pin that connect single-chip microcomputer after first resistance R 1, constitute an alarm sound circuit.The light emitting diode LD1 and second resistance R 2 insert 6 pin of single-chip microcomputer, constitute a light prompt circuit.
When object moves or tilts, the acceleration on three (X, Y, Z) causes electric capacity to change, and changes in capacitance is transformed into and the proportional calibrated analog voltage of motion.Analog to digital converter converts aanalogvoltage to digital signal, through I
2The C bus, output digital signal SDA and clock signal SCL, i.e. 7 pin of sensor chip U1 and 6 pin.Among the displacement data input single-chip microcomputer U2, the 5 pin output high level of single-chip microcomputer U2, triode Q1 conducting, hummer B2 sends the alarm sound warning simultaneously.The high level of 6 pin of single-chip microcomputer output simultaneously, light warning takes place in light emitting diode LD1 conducting, thereby realizes the motion of object or the whole process that inclination triggers sound and light alarm.
The present invention adopts three low gravity digital acceleration sensors, is that silicon is processed into three-dimensional structure, and its encapsulation is convenient to install with the contact and is assembled, and has fabulous precision, minimum size and extremely low power consumption with the sensor of this fabrication techniques.This sensor only just can be made by a small pieces silicon, and the acceleration of three orthogonal directions of energy measurement (X, Y, Z).In the three-axis sensor, the slight displacement that motion on three (X, Y, Z) or inclination can cause movable silicon structure, cause activity and fixedly the electric capacity between the components and parts change.Through capacitance-voltage converter and amplifier, small capacitance variations is transformed into and the proportional calibrated analog voltage of motion.Through analog to digital converter, convert aanalogvoltage to digital signal, through I
2The C bus, output digital signal SDA and clock signal SCL.
As shown in Figure 2; Another embodiment of the present invention; Said 3-axis acceleration sensor comprises X axle sensor, Y axle sensor and the Z axle sensor that connects multiplexer respectively, and said multiplexer is connected in series capacitance voltage converter, amplifier, analog to digital converter and I successively
2The C bus, said capacitance voltage converter is connected clock generator respectively with amplifier, and said clock generator connects crystal oscillator respectively; Said analog to digital converter and I
2The C bus connects logic control element respectively; Said logic control element is connected with gain amplifier, skew adjustment unit, X axle sensor, Y axle sensor and Z axle sensor respectively; Said I
2C bus difference clock signal and displacement data signal are to single-chip microcomputer.Said logic control element output look-at-me is to single-chip microcomputer.
The NM remainder of this embodiment is identical with previous embodiment.
The invention also discloses a kind of automatic energy-saving method of alarm triggering device; If 3-axis acceleration sensor is subjected to displacement variation; Then send the low level look-at-me to single-chip microcomputer, single-chip microcomputer triggers audible alarm circuit and light prompt circuit after receiving the low level look-at-me; Otherwise 3-axis acceleration sensor sends high level signal to sensor, and single-chip microcomputer is in the dormancy low power consumpting state.Promptly single-chip microcomputer U2 is in sleep state at ordinary times; When the digital sensor data changed, the 5th pin of 3-axis acceleration sensor U1 produced a low level signal, and the 7th pin of single-chip microcomputer U2 is the down trigger pin; After the 7th pin of single-chip microcomputer U2 receives low level signal; Program withdraws from sleep state, starts interrupt response program and numerical software filter, triggers and reports to the police.
The invention provides the thinking and the method for a kind of alarm triggering device and automatic energy-saving method thereof; The method and the approach of concrete this technical scheme of realization are a lot, and the above only is a preferred implementation of the present invention, should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.The all available prior art of each ingredient not clear and definite in the present embodiment realizes.
Claims (1)
1. an alarm triggering device is characterized in that, comprises single-chip microcomputer and the 3-axis acceleration sensor that is electrically connected with single-chip microcomputer respectively, clock oscillation, audible alarm circuit, light prompt circuit;
Said 3-axis acceleration sensor is used to export the displacement signal and the clock signal of X axle, Y axle, Z axle and gives single-chip microcomputer;
Said single-chip microcomputer triggers audible alarm circuit and light prompt circuit according to the displacement signal of 3-axis acceleration sensor;
Said 3-axis acceleration sensor comprises that model is the sensor chip of MMA7660FC, and said sensor chip difference clock signal and displacement data signal are to single-chip microcomputer; Said sensor chip output look-at-me is to single-chip microcomputer;
1 pin of said sensor chip U1,4 pin ground connection; 3 pin, 9 pin connect power supply; 5 pin output look-at-me/INT of sensor chip U1 is to 7 pin of single-chip microcomputer U2; The 7 pin carry-out bit shift numbers of it is believed that of sensor chip U1 are to 9 pin of single-chip microcomputer U2, and the 6 pin clock signals of sensor chip U1 are to 8 pin of single-chip microcomputer U2;
The 14 pin ground connection of single-chip microcomputer U2,1 pin connects power supply; First capacitor C 1, second capacitor C 2, the 3rd resistance R 3, crystal oscillator Y1 form the single-chip microcomputer clock oscillation; Wherein 14 pin of single-chip microcomputer U2 connect an end of first capacitor C 1 and second capacitor C 2 respectively; The other end of second capacitor C 2 connects 12 pin of single-chip microcomputer; The other end of first capacitor C 1 connects 11 pin of single-chip microcomputer, and an end of the 3rd resistance R 3 and crystal oscillator links to each other and is connected 12 pin of single-chip microcomputer, and the other end of the 3rd resistance R 3 and crystal oscillator is continuous and be connected 11 pin of single-chip microcomputer; Crystal oscillator Y1 uses as the clock of single-chip microcomputer, connects 12 pin of single-chip microcomputer, and first capacitor C 1, second capacitor C 2 are as the effect of LPF;
The end of hummer B1 is connected with the collector of triode Q1, another termination power of hummer,
The base stage of triode Q1 connects 5 pin that connect single-chip microcomputer after first resistance R 1, constitutes an alarm sound circuit;
The light emitting diode LD1 and second resistance R 2 insert 6 pin of single-chip microcomputer, constitute a light prompt circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101246566A CN101794492B (en) | 2010-03-16 | 2010-03-16 | Alarm triggering device and automatic energy-saving method thereof |
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| CN2010101246566A CN101794492B (en) | 2010-03-16 | 2010-03-16 | Alarm triggering device and automatic energy-saving method thereof |
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| CN101794492A CN101794492A (en) | 2010-08-04 |
| CN101794492B true CN101794492B (en) | 2012-07-25 |
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| CN102231226A (en) * | 2011-06-10 | 2011-11-02 | 徐迪 | Low-power-consumption tumble alarm capable of positioning |
| CN102982660A (en) * | 2011-09-02 | 2013-03-20 | 鲁东大学 | Power-saving family entrance door monitoring alarm system and implement method |
| CN106305676A (en) * | 2015-07-02 | 2017-01-11 | 韶关市华芝电子新技术有限公司 | Automatic electronic mosquito swatter |
| DE102019205040A1 (en) * | 2019-04-09 | 2020-10-15 | Sivantos Pte. Ltd. | Hearing aid and method for operating such a hearing aid |
| CN110415472A (en) * | 2019-08-19 | 2019-11-05 | 蚌埠依爱消防电子有限责任公司 | A kind of monomer is wireless door/window warning device and alarm method |
| CN110500085A (en) * | 2019-09-24 | 2019-11-26 | 天津七一二通信广播股份有限公司 | A kind of wireless pressure transmitter device with displacement and anti-theft monitoring function |
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| KR100408518B1 (en) * | 2001-04-12 | 2003-12-06 | 삼성전자주식회사 | Pen input device and Measuring method of coordinate |
| CN101059904A (en) * | 2006-03-03 | 2007-10-24 | 王胤 | A mobile communication network-based intelligent anti-theft alarm device |
| JP4471389B2 (en) * | 2007-01-22 | 2010-06-02 | トレックス・セミコンダクター株式会社 | Dual acceleration sensor system |
| CN101350136A (en) * | 2008-09-04 | 2009-01-21 | 清华大学 | Method for dynamically detecting wagon bias loading and alarm system thereof |
| CN101510341A (en) * | 2009-03-09 | 2009-08-19 | 华中科技大学 | Theftproof system for monitoring exhibits based on acceleration sensor |
| CN201654925U (en) * | 2010-03-16 | 2010-11-24 | 江苏中讯数码电子有限公司 | Alarming trigger device |
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