CN203851920U

CN203851920U - Anti-lost key ring

Info

Publication number: CN203851920U
Application number: CN201320766998.7U
Authority: CN
Inventors: 龙华; 胡晓梦
Original assignee: Kunming University of Science and Technology
Current assignee: Kunming University of Science and Technology
Priority date: 2013-11-29
Filing date: 2013-11-29
Publication date: 2014-10-01
Anticipated expiration: 2023-11-29

Abstract

The utility model relates to an anti-lost key ring and belongs to the field of test instruments. The anti-lost key ring comprises a key ring shell, an LED (Light Emitting Diode) display lamp, a horn, a Bluetooth transmitter-receiver set, a wireless receiving module circuit, an encoding-decoding circuit, a buzzing circuit and a shining circuit, wherein the LED display lamp and the horn are arranged on the key ring shell; the output end of the Bluetooth transmitter-receiver set is connected with the input end of the wireless receiving module circuit; the wireless receiving module circuit is connected with the encoding-decoding circuit; the encoding-decoding circuit is respectively connected with the buzzing circuit and the shining circuit. In order to solve the problem that the key is easily lost and is difficult to find due to the small volume, the utility model provides the key ring which has the functions of Bluetooth connection, sounding reminding and shining at night; the problem of finding the key by people is solved; the anti-lost key ring has the advantages of small volume, fashionable appearance, low cost and convenience in use.

Description

A kind of anti-lost key ring

Technical field

The utility model relates to a kind of anti-lost key ring, belongs to daily living article technical field.

Background technology

At present, key has become a part indispensable in people's life and work.But its small volume of key, in the time that people are discarded in key in certain corner of family unintentionally, is just difficult to find key again, need the cost plenty of time to look for key, if especially in the time of worried going out, key can not find, not only affect normal life and work, and also very big to emotion influence.Sometimes people are placed on key in bag conveniently, because article in bag are too much, also can make troubles for using.

The patent of anti-lost key ring at present, as adopted the method for AP7003-2 main control chip in the patent No. 201220305311.5, in the time that people need look for key, key chain buzzer is sounded, thereby solves the problem of looking for key.But these technology major parts also need to be furnished with in addition flip flop equipment, press the normally work of button key chain of looking for.

This patent adopts blue tooth wireless technology for this reason, bluetooth transceiver therein is installed in key chain, so most of user's mobile phone all can be directly and key chain match, directly just can look for mobile phone when needed, and without other flip flop equipments, not only saving resource but also easy to use.

Summary of the invention

The technical problems to be solved in the utility model is: a kind of anti-lost key ring with bluetooth linkage function, sounding reminding function, illuminating at night prompt facility is provided, and for solving, key is easily lost and small volume is difficult for the problem of finding.

Technical solutions of the utility model are: a kind of anti-lost key ring, comprises key chain shell 1, LED display lamp 2, loudspeaker 3, bluetooth transceiver therein, wireless receiving module circuit, coding-decoding circuit, buzz circuit, illuminating circuit; Key chain shell 1 is provided with LED display lamp 2, loudspeaker 3, LED display lamp 2 comprises four light emitting diodes in illuminating circuit, buzz circuit comprises loudspeaker 3 and external circuits thereof, bluetooth transceiver therein output is connected with the input of wireless receiving module circuit, wireless receiving module circuit is connected with coding-decoding circuit, and coding-decoding circuit is connected with buzz circuit, illuminating circuit respectively.

Described wireless receiving module circuit comprises LM358 and external circuits thereof, and the output port VT of wireless receiving module circuit is connected with the input Dout of coding-decoding circuit.

Described coding-decoding circuit comprises that a PT2272 chip, its A4 interface are connected with buzz circuit, its interface D0, D1, D2, D3 are connected with four light emitting diodes of illuminating circuit respectively.

As shown in Figure 2, D3, D2, D1, D0 are that the four figures of PT2272 chip is according to output, while having signal, coding-decoding circuit can be exported the high level of 5V left and right, the about 2mA of drive current, in the time not being communicated with Bluetooth signal, PT2272 chip is disconnected power supply, is output as low level, drives buzz circuit, illuminating circuit to open and do not work.In the time that Bluetooth signal is communicated with, PT2272 chip is started working, be output as high level, drive buzz circuit, illuminating circuit to start working, after this start sounding, luminous, person easy to use, by sound, light source distinguishing keys position, reaches searching object, and this key chain is powered by the rechargeable battery being arranged in key chain.

The course of work of the present utility model is: when user finds after key loss, open own Bluetooth of mobile phone function of search, mobile phone sends Bluetooth signal, now key chain internal wireless receiver module circuit receives mobile phone signal, wireless receiving module circuit passes to coding-decoding circuit by signal after receiving signal, the output port of coding-decoding circuit is exported effective high level signal, just can drive buzz circuit, illuminating circuit is opened, key chain internal circuit is realized luminous, sounding effect, user can carry out finding key button according to sound generation source or light emitting source, thereby reach key and look for object.

The beneficial effects of the utility model are: this key chain easily loses for key and small volume is difficult for the problem of finding, invent a key chain with bluetooth linkage function, sounding reminding function, illuminating at night prompt facility, solve the problem that people look for key, the small and exquisite outward appearance fashion of this device volume is with low cost easy to use.

Brief description of the drawings

Fig. 1 is the utility model schematic appearance;

Fig. 2 is the utility model operating circuit schematic diagram.

Each label in Fig. 1: 1-key chain shell, 2-LED display lamp, 3-loudspeaker.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

Embodiment 1: as shown in Figure 1-2, a kind of anti-lost key ring, comprises key chain shell 1, LED display lamp 2, loudspeaker 3, bluetooth transceiver therein, wireless receiving module circuit, coding-decoding circuit, buzz circuit, illuminating circuit; Key chain shell 1 is provided with LED display lamp 2, loudspeaker 3, LED display lamp 2 comprises four light emitting diodes in illuminating circuit, buzz circuit comprises loudspeaker 3 and external circuits thereof, bluetooth transceiver therein output is connected with the input of wireless receiving module circuit, wireless receiving module circuit is connected with coding-decoding circuit, and coding-decoding circuit is connected with buzz circuit, illuminating circuit respectively.

Embodiment 2: as shown in Figure 1-2, a kind of anti-lost key ring, comprises key chain shell 1, LED display lamp 2, loudspeaker 3, bluetooth transceiver therein, wireless receiving module circuit, coding-decoding circuit, buzz circuit, illuminating circuit; Key chain shell 1 is provided with LED display lamp 2, loudspeaker 3, LED display lamp 2 comprises four light emitting diodes in illuminating circuit, buzz circuit comprises loudspeaker 3 and external circuits thereof, bluetooth transceiver therein output is connected with the input of wireless receiving module circuit, wireless receiving module circuit is connected with coding-decoding circuit, and coding-decoding circuit is connected with buzz circuit, illuminating circuit respectively.

By reference to the accompanying drawings specific embodiment of the utility model is explained in detail above, but the utility model is not limited to above-described embodiment, in the ken possessing those of ordinary skill in the art, can also under the prerequisite that does not depart from the utility model aim, make various variations.

Claims

1. an anti-lost key ring, is characterized in that: comprise key chain shell (1), LED display lamp (2), loudspeaker (3), bluetooth transceiver therein, wireless receiving module circuit, coding-decoding circuit, buzz circuit, illuminating circuit; Described key chain shell (1) is provided with LED display lamp (2), loudspeaker (3), LED display lamp (2) comprises four light emitting diodes in illuminating circuit, buzz circuit comprises loudspeaker (3) and external circuits thereof, bluetooth transceiver therein output is connected with the input of wireless receiving module circuit, wireless receiving module circuit is connected with coding-decoding circuit, and coding-decoding circuit is connected with buzz circuit, illuminating circuit respectively;

Described wireless receiving module circuit comprises LM358 and external circuits thereof, and the output port VT of wireless receiving module circuit is connected with the input Dout of coding-decoding circuit;