CN208433080U - A kind of portable security alarm anti-theft device - Google Patents

Abstract

The utility model discloses a small portable anti-theft and anti-theft alarm. The portable anti-theft and anti-theft device is composed of a sub-machine and a main machine. The sub-machine includes a coding output module and a wireless transmitting module, and the main machine includes a power supply module and a receiving and detecting module. Decoding module, alarm module, variable resistance module. This portable anti-theft and anti-theft device has two mode switches, one is the anti-lost mode, the other is the search slave mode. Look for patterns. The utility model realizes the anti-theft and anti-theft functions in a compact and sensitive manner, is easy to carry and simple to operate, and is especially suitable for use in crowded places or people who easily forget what they put there. In addition, the device is small in size, light in weight, and strong in controllability. Users can set their own working methods according to their own habits; many humanized design concepts have been realized.

Description

A kind of portable security alarm anti-theft device

Technical field

A kind of this practical portable mobile small-sized antitheft Anti-theft alarm, more particularly to one kind of being newly related to is suitable in crowd Intensive place or it is easy to forget that the people of oneself put thing uses.

Background technique

With the quickening of Modern Live rhythm, people's outgoing plane can be also more and more, then portable wallet has When kept a close watch on unavoidably by robber, at public places such as square, waiting halls, do not pay attention to slightly to be taken away oneself by robber Packet.If child has wandered away more worried, the generation for preventing from such event is carried.

Due to the development of current science and technology, valuable intellectual product is carried in improvement of living standard, and many data are to antitheft It is studied.Using Bluetooth communication alarm, there is distance to limit between the equipment of Bluetooth communication, limit mobile terminal Antitheft application range.The alarm of wired connection terminal, this will increase the probability of wrong report, and connecting line is not easy to put.Some The alarm system inside embedded mobile phone that patent provides, this anti-theft technique application surface is narrow, is only limited to mobile phone.Also Indoor someone swarms into signal detection, once detecting that someone swarms into, will trigger alarm system, it is this be suitable for one it is fixed Place.A kind of alarm of another theftproof wagon, this anti-theft technique application surface is narrow, is not suitable for carrying The protection of article.There are also a kind of a kind of alarms being adhered on item to be protected, when item to be protected is detached from alarm terminal, Alarm is alarmed, and when this alarm does not account for terminal and article while stolen or forgetting, will not be alarmed.

Above-mentioned patent does not account for selection of alarming under various modes, some limitations are narrow, are used only for single object Product.This patent proposes a kind of utility model portable security alarm anti-theft device, and mode small and exquisite with its, that induction is sensitive is anti-to realize Steal anti-theft function.Portable small base station can be opened on patch to protected article (such as wallet, mobile phone), At this moment small base station will incude the distance of protected object body constantly, once it is stolen, dropped out from pocket or because careless general idea is forgotten Band will issue alarm and remind user.In addition this device volume is small, light-weight, and controllability is strong, and user can be according to itself It is accustomed to oneself setting working method；Realize many humanized design theories.

Summary of the invention

The utility model is mainly solving the technical problems that provide a kind of portable anti-theft alarm, once it is suitable for quilt Steathily, it is dropped out from pocket or because careless general idea is left behind, alarm will be issued and remind user that the owner of lost property is notified to find in time, to prevent expensive The loss of heavy articles, in addition this device volume is small, light-weight, and controllability is strong, and user can be accustomed to oneself setting according to itself Working method.

To achieve the goals above, the technical scheme adopted by the utility model is a kind of portable anti-theft alarm, It is constituted including handset and host, handset includes coding output module and wireless transmitter module, and host includes power module, is received Detection module, decoder module, alarm module, variable resistance module.Handset is made of coding circuit and radio transmitter, is issued The signal of fixed frequency, coding circuit are mainly basic original part with NE555, select independence by adjusting NE555 original part parameter Signal in band, handset generate low frequency signal be converted into high-frequency signal, sent by antenna, wherein antenna using plating Silver wire improves emission effciency, and antenna size is 24mm (length) x 9mm (height), can preferably improve the transporting of signal in this way, The reliability and stability of increase system.Host is made of circuits such as retroactive reception, decoding, model selection, alarm, power supplys. Retroactive reception circuit receives wireless signal, restores encoded signal through detection；Signal is solved by decoding circuit again.

As a kind of optimal technical scheme of the utility model, the reception circuit of the portable security alarm anti-theft device is by height It puts, the composition such as superregenerative detection circuit and amplifying circuit is adjusted to host and handset identical by adjusting the frequency of circuit Frequency range, by adjustable reception distance, adjusting finishes the amplification path in circuit, can be verified by waveform, if receiving electricity Road does not receive handset signal, and reception circuit is random clutter, on the contrary, receiving circuit receives signal, output circuit waveform As handset transmitted waveform.

As a kind of optimal technical scheme of the utility model, the warning circuit of the portable security alarm anti-theft device mainly by One multivibrator and output circuit composition, there are two mode switch, one is anti-lost mode, and one is to find handset mould Formula.When alarm is placed on anti-lost mode, when the signal between handset and host disconnects, host does not receive the signal of handset, Multivibrator interrupted output high level, warning circuit conducting, buzzer sounding, vibrator vibration, to remind owner.Work as switch When finding handset mode, alert operation circuit is in opposite working condition, that is, alarm will be issued by receiving signal, fits When adjusting knob, determine alarm can move closer to handset.

As a kind of optimal technical scheme of the utility model, the wireless transmitter module is Zigbee terminal, described Wireless receiving module is Zigbee router.

The beneficial effects of adopting the technical scheme are that the utility model is suitable for portable security alarm anti-theft The whole device of device is small in size, and light-weight to carry, controllability is strong, and user can be accustomed to oneself setting according to itself Working method, transmitter wearing with by protection object, wear with me or owner by receiver.It is convenient to wear, much Side realizes humanized design, and model selection includes two modes, and receiver regulation wheel anti-lost mode: is allocated to suitable distance (distance of oneself set distance of user as needed), is allocated to " anti-lost " for power switch, when receiver leaves defined distance When, transmitter starts to alarm, and article is prompted to lose；Searching modes: receiver power supply switch is pushed " at searching ", it receives at this time Machine issues the sound of " ticking ", when receiving transmitting signal, receiver issue " ticking " alert sound close to prompt tone and Vibration, is able to conveniently find the object protected, such as leaves and receive range, receiver signal lamp lamp is directly bright, does not issue alert sound.

Detailed description of the invention

Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.

Fig. 1 is the handset structure chart of the utility model portable security alarm anti-theft device.

Fig. 2 is the patch figure of the handset of the utility model portable security alarm anti-theft device.

Fig. 3 is the main machine structure functional block diagram of the utility model portable security alarm anti-theft device.

Fig. 4 is the warning circuit structure principle chart of the utility model portable security alarm anti-theft device.

In figure, 1, paster, 2, paper-tear picture, 3, shell, 4, handset, 5, coding output module, 6, low-and high-frequency signal conversion module, 7, wireless transmitter module.

Specific implementation method

Referring to attached drawing 1, Fig. 2 and Fig. 3, a kind of portable security alarm anti-theft device, one specific embodiment of the utility model Structure in include a handset 4 and a host, it is characterised in that 4 be to be attached to not protecting on article in the form of patch, sub Machine 4 includes the paster 1 below handset, the paper-tear picture 2 below handset, shell 3, coding output module 5, low-and high-frequency signal conversion module 6 and wireless transmitter module 7, high-frequency signal is converted by low frequency signal by 6, wireless signal can be transmitted to host by 7, It include that wireless receiving module is received, at reception circuit, adjusting circuit, amplification path, wave detector, mode selection module, signal in host Module, LED light, warning circuit, alarm and vibrator are managed, receives circuit by the frequency of adjusting circuit, host and son Machine is adjusted to identical frequency range, and the amplification path in circuit receives distance by adjusting, and adjusting is finished, can be verified by waveform, If receiving circuit does not receive handset signal, reception circuit is random clutter, on the contrary, receiving circuit receives signal, it is defeated Circuit waveform is as handset transmitted waveform out.

As shown in figure 4, the warning circuit of portable security alarm anti-theft device is there are two mode switch, one is anti-lost mode, one A is to find handset mode.When alarm is placed on anti-lost mode, when the signal between handset and host disconnects, host is received not To the signal of handset, multivibrator interrupted output high level, warning circuit conducting, buzzer sounding, vibrator vibration, to mention Wake up owner.When switch is when finding handset mode, alert operation circuit is in opposite working condition, that is, receiving signal will Alarm is issued, adjusting knob appropriate determines that alarm can move closer to handset.

Wireless transmitter module is Zigbee terminal, and wireless receiving module is Zigbee router.

The working principle of the utility model is: the utility model is suitable for article crowd easy to be lost, first passing through in advance will be sub Machine is attached in the form of patch Bao Hu not tear off 2, be attached on protected article 1,1 and 4 be to stick together on article , then it is arranged 4 and a low frequency signal is generated by the coding circuit in 5, NE555 timer can selects an independent signal Then wave band converts high-frequency signal for low frequency signal by 6, wireless signal is then transmitted to host by 7 again, in host Wireless receiving module receive signal after, receive circuit by adjust circuit frequency, host and handset are adjusted to identical Frequency range, the amplification path in circuit receive distance by adjusting, and adjusting is finished, can be verified by waveform, connect if receiving circuit It can not receive handset signal, reception circuit is random clutter, on the contrary, receiving circuit receives signal, output circuit waveform and son Machine transmitted waveform is the same.When alarm is placed on anti-lost mode, when the signal between handset and host disconnects, host is received not To the signal of handset, multivibrator interrupted output high level, warning circuit conducting, buzzer sounding, vibrator vibration, to mention Wake up owner.When switch is when finding handset mode, alert operation circuit is in opposite working condition, that is, receiving signal will Alarm is issued, adjusting knob appropriate determines that alarm can move closer to handset.

Foregoing description is only used as the enforceable technical solution of the utility model to propose, not as to its technical solution itself Single restrictive condition.

Claims (3)

1. a portable anti-theft anti-theft device is characterized in that: it is composed of a sub-machine and a main machine, the sub-machine includes an encoding module, a high-frequency signal conversion module and a wireless transmission module, and the main machine includes a power supply module, a receiving detection module, a decoding module, a mode A selection module, an alarm module and a signal processing module, wherein the receiving and detecting module includes a receiving circuit, a regulating circuit, an amplifying circuit, and a detector, the mode selection module includes a search mode and an alarm mode, and the alarm module includes an LED light, an alarm circuit, and a buzzer. And the vibrator, the coding module in the sub-machine is mainly based on NE555, and the independent signal band is selected by adjusting the parameters of the NE555 original to send out a fixed frequency signal. The receiving circuit in the receiving detection module in the host receives the wireless signal, The coded signal is restored by the detector, and then the signal is decoded by the decoding module. 2. The portable anti-theft anti-theft device according to claim 1 is characterized in that: when the portable anti-theft anti-theft device is set to an alarm mode, the signal between the sub-machine and the host is in a disconnected state, and the host cannot receive the signal of the sub-machine. Signal, the multivibrator intermittently outputs a high level, the alarm circuit is turned on, the buzzer sounds, the vibrator vibrates, and the LED light lights up to remind the owner. 3. The portable anti-theft anti-theft device according to claim 1 is characterized in that: when the portable anti-theft anti-theft device is set to the search mode, the alarm circuit is in the opposite working state, that is, an alarm sound will be issued when a signal is received, and an appropriate Adjust the knob to determine that the alarm sound can gradually approach the handset.