CN2327025Y - Carry-on article anti-theft alarm - Google Patents

Abstract

The utility model discloses a carry-on article anti-theft alarm, which is composed of a signal transmitter and a signal receiving alarm, wherein, the signal transmitter is composed of a casing, power supply in the casing, an intermittent transmission control circuit, a power supply on-off and long-short distance transmission controlling switch circuit, and a microwave transmitting module; the signal receiving alarm is composed of a casing, power supply in the casing, a microwave receiving module, a demodulating circuit, a DC voltage amplifying circuit, an electroacoustic module, a buzzer with high loudness, and coupling capacitance which is connected between the microwave receiving module and the demodulating circuit. When a definite distance exists between the signal transmitter and the signal receiving alarm. The signal receiving alarm can transmit alarm signals automatically. The utility model has the advantages of less power consumption, compact structure, convenient operation, etc.

Description

The anti-lost alarm of a kind of carry-on articles

The utility model relates to a kind of warning device. and exactly be the antitheft anti-loss autoalarm of a kind of personal effects.

For a long time, people's valuables are stolen in some public place, being lost phenomenon happens occasionally, this causes certain economic loss and mental suffering not only for the owner of lost property, sometimes also can cause great loss to the country and people, up to the present, in society except this is taked reminds people enhance your vigilance and the measure of the crime of strengthening hitting out against theft, also do not have a kind of more direct measure to prevent the generation of above-mentioned phenomenon.

The purpose of this utility model is to provide a kind of alarm that can pass into silence at owner's article or give the alarm signal when stolen automatically for people.

The purpose of this utility model is achieved in that it receives alarm by signal projector, signal and forms, described signal projector by housing, be arranged on power supply, intermittent transmission control circuit, power supply in the housing can break reach far and near journey emission control on-off circuit, the microwave transmitter module constitutes; After being in series, this intermittent transmission control circuit, microwave transmitter module, on/off and far and near journey emission control on-off circuit be parallel between power positive cathode; Described signal receives alarm by housing, be arranged on power supply, microwave receiving module, demodulator circuit, DC voltage amplifying circuit, electroacoustic module, the high loudness news Chinese percussion instrument in this shell and be connected in coupling electric capacity formation between fast microwave receiving module of institute and the demodulator circuit, described microwave receiving modular power source terminals connect with power positive cathode; Fast demodulator circuit output terminal connects with described DC voltage input amplifier, described electroacoustic module two supply terminalss connect with power positive cathode, its input end connects with described DC voltage amplification circuit output end, connects described high loudness news Chinese percussion instrument between its output terminal and the power positive end.

After the utility model is realized; people can be with the latent article that place of signal projector; signal is received alarm to be carried; as article and owner during at a distance of certain distance, signal receives alarm can send the sound, plays the warning effect; thereby the article that can prevent the owner are effectively lost or are stolen; help protecting people's property safety, help reducing theft crime, safeguard the normal order of society.

Below in conjunction with accompanying drawing the utility model is done explanation in further detail.

Fig. 1 is the signal projector outside drawing.

Fig. 2 is a signal projector inner structure synoptic diagram.

Fig. 3 is the signal projector circuit diagram.

Fig. 4 is the alarm outside drawing.

Fig. 5 is that signal receives alarm inner structure synoptic diagram.

Fig. 6 is that signal receives alarm circuit figure.

It is to constitute like this that signal projector of the present utility model, signal receive alarm:

Fig. 1, Fig. 2 are the structural drawing of signal projector, as seen from the figure, it is provided with housing 1, this housing is made up of lower house 7, upper shell 8, in lower house 7 inner chambers, direct supply 6 is set, fixed installation intermittent transmission control circuit board 5, microwave emission mould 4, on/off and nearly long-range emission control on-off circuit parts 3, and the safety chain 2 that is hinged on the lower house 7 is formed; As shown in Figure 3, the circuit of signal projector is to constitute like this, two supply terminalss of an electroacoustic module I C1 (KD153) respectively with positive and negative extreme connection of direct supply (voltage 1.5V), its input end connection electrical resistance R1 (220K Ω) that vibrates, this electroacoustic module I C1 and oscillation resistance R1 constitute the intermittent transmission control circuit, and this circuit output end connects by resistance R 2 (3K Ω), resistance R 3 (1.5K Ω) and has on/off that the toggle switch of Ka, Kb, three gears of Kc constitutes and the input end of nearly long-range emission control on-off circuit; Two supply terminalss of a microwave transmitter module IC2 (FO3) connect with power positive cathode respectively, and its input end connects with the output terminal of above-mentioned on/off and nearly long-range emission control on-off circuit.Dump when above-mentioned toggle switch is in the Ka position; Power connection when being in the Kb position, and make the emissive power of microwave transmitter module be in less state, be controlled in 1 meter thereby make signal be received distance; When being in the Kc position, power connection, and make the emissive power of microwave emission mould sound be in maximum rating, be controlled in 4 meters thereby make signal be received distance.

Fig. 4, Fig. 5 are the structural drawing that signal receives alarm, as seen from the figure, it is provided with housing 9, this housing 9 is made up of upper shell 10, lower house 11, direct supply 18 is set, microwave receiving module 15, circuit board 14, electroacoustic module 17, high loudness news Chinese percussion instrument 19, the power switch 16 formed by demodulator circuit and DC voltage amplifying circuit and coupling electric capacity in lower house; The outer hinged safety chain 13 of this lower house, the circuit setting of this number of recognizing reception alarm as shown in Figure 6, it adopts the direct supply that magnitude of voltage is 3V, two supply terminalss and power supply positive and negative polarities that receive ic chip 3 (JO3) link, connect a coupling capacitance C1 (0.2f) between the input end of its signal output part and an IC4 (4069) who amplifies the shaping digital integrated block, connect a resistance R 4 (1M Ω) between this input of amplifying the gate-type amplification and rectification circuit first order that is provided with in shaping digital integrated block IC4 and the output terminal, this output terminal that amplifies the shaping digital integrated block connects with capacitor C 2 (1000p) input end, the output terminal of this capacitor C 2 connects with the positive terminal of a diode D1 (1ss110), the negative pole end of this diode D1 respectively with negative pole end electrochemical capacitor C3 (33f) positive terminal of a diode D2 (1ss1l0), the end of a slide rheostat RW1 (0-200k Ω) and triode BG1 (9014) base stage connect, the positive terminal of above-mentioned diode D2, the negative pole end of capacitor C 3, the other end of slide rheostat RW1 extremely connects with power-respectively, the emitter joining power negative pole end of above-mentioned triode BG1, its collector one end respectively with a resistance R 5 (1K Ω) end, triode BG2 (9015) base terminal connects, the other end of this resistance R 5 connects with positive source, the emitter joining power positive pole of this triode BG2, connecting this collector terminal of a capacitor C 5 (1F) between its collector one end and power-are extreme connects with the signal input part of an electroacoustic ic chip 5 (HL930), two supply terminalss of this electroacoustic integrated package connect with power positive cathode respectively, connect a high loudness news Chinese percussion instrument between its signal output part and the power positive end, the alert D3 of resistance in series R6 between this signal output part and power cathode (1K Ω) and light-emitting diodes, a capacitor C 4 (47F) in parallel between power positive cathode.

Above-mentioned amplification shaping digital integrated block IC4, resistance R 4, capacitor C 2, diode D1, D2, capacitor C 3, slide rheostat RW1 constitute demodulator circuit; Triode BG1, resistance R 5, triode BG2 constitute the DC voltage amplifying circuit.

The principle of work of signal projector is: electroacoustic module I C1 is by its oscillation frequency generation at intermittence 2000HZ-3000HZ signal at intermittence (intermittently being worth 0.5 second) of resistance R 1 adjusting, and the input service after R2 or R3 adjustment of this amplitude output signal is launched mould IC2 and launched the mixing electric wave signal by microwave transmitter module IC2 at the microwave of 300MHz-400MHZ.

The principle of work that signal receives alarm is: when signal receive alarm and signal projector exceed 1 meter or 4 meters apart from the time, signal receives the signal that ic chip 3 does not receive the signal projector emission, self produce the ripple signal of making an uproar and receive ic chip 3 by signal, this signal is coupled to through capacitor C 1 and amplifies shaping ic chip 4, signal after it amplifies shaping passes through capacitor C 2 by diode D1, D2, capacitor C 3, the ripple detecting circuit of making an uproar that slide rheostat RW1 forms is to the ripple detection of making an uproar, make it to become steady DC voltage, this voltage is through triode BG1, after BG2 amplifies, promote electroacoustic ic chip 5, and drive the work of high loudness news Chinese percussion instrument.And when signal receive alarm and signal projector apart 1 meter with interior or 4 meters in the time, it can receive the signal that signal projector sends, but this signal can not drive its electroacoustic component work.

Claims (7)

1, the anti-lost alarm of a kind of carry-on articles, it is characterized in that: it receives alarm by signal projector, signal forms, and described signal projector is made of housing, power supply, intermittent transmission control circuit, on/off and the far and near journey emission control on-off circuit, the microwave transmitter module that are arranged in the housing; After being in series, this intermittent transmission control circuit, microwave transmitter module, on/off and far and near journey emission control on-off circuit be parallel between power positive cathode; Fast signal receive alarm by housing, be arranged on power supply, microwave receiving module, demodulator circuit, DC voltage amplifying circuit, electroacoustic module, high loudness news Chinese percussion instrument in this housing and the coupling capacitance that is connected between described microwave receiving module and the demodulator circuit and constitute, described microwave receiving modular power source terminals connect with power positive cathode; Described demodulator circuit output terminal connects with described DC voltage input amplifier, described electroacoustic module two supply terminalss connect with power positive cathode, its input end connects with described DC voltage amplification circuit output end, connects described high loudness news Chinese percussion instrument between its output terminal and the power positive end.

2, according to claim 1 the fast anti-lost alarm of a kind of carry-on articles, it is characterized in that: described intermittent transmission control circuit is made up of electroacoustic module that connects with power positive cathode and the oscillation resistance that is connected in this electroacoustic module vibration input end.

3, the anti-lost alarm of a kind of carry-on articles according to claim 1 is characterized in that: described on/off and far and near journey countdown circuit are made up of the resistance (R2) that connects with described intermittent transmission control circuit output terminal, resistance (R3) and many retaining toggle switches.

4, the anti-lost alarm of a kind of carry-on articles according to claim 1, it is characterized in that: described demodulator circuit is made up of the amplification and rectification circuit and the ripple detecting circuit of making an uproar, and this amplification and rectification circuit is imported by an amplification shaping integrated package (IC4) and with the interior gate-type amplification and rectification circuit first order that is provided with of this amplification shaping integrated package and output terminal links, and resistance (R1) constitutes; The described ripple detecting circuit of making an uproar is to be made of the electric capacity (C2) that is in series with described amplification and rectification circuit output terminal, diode (D1) and the diode (D2), electrochemical capacitor (C3), the slide rheostat (RW1) that extremely are in parallel with this diode (D1) negative pole end and power-respectively.

5, the anti-lost alarm of a kind of carry-on articles according to claim 1, it is characterized in that: fast DC voltage amplifying circuit form by I and II triode (BG1), (BG2) and resistance (R5), this one-level triode (BG1) base stage connects with described demodulator circuit output terminal, its collector terminal connects with described diode ﹠ transistor (BG2) base terminal, and its emitter of connection electrical resistance (R5) connects with power cathode between this end and positive source; The emitter of described secondary triode (BG2) connects with positive source, and its collector terminal connects with described electroacoustic module input.

6, the anti-lost alarm of a kind of carry-on articles according to claim 1 is characterized in that: shunt capacitance (C4) between the power positive cathode of described signal reception alarm.

7, the anti-lost alarm of a kind of carry-on articles according to claim 1 is characterized in that: shunt capacitance (C5) between institute's fast diode ﹠ transistor (BG2) collector terminal and power-are extreme.

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