CN2372852Y - Losing-preventing warning device for handset - Google Patents

Abstract

The utility model relates to a losing-preventing warning device for handset comprising a coded message emitter in the battery box of the mobile phone and a portable prompting device. The prompting device comprises a signal receiving circuit capable of receiving the signal emitted by the coded message emitter, a decoding circuit which is connected with the signal receiving circuit through a shaping and magnifying electric circuit, and an acoustic electric circuit and a vibrating electromechanical circuit which are connected with the output end of the decoding circuit. When the distance between the mobile phone and the prompting device extends the effective range, the acoustic electric circuit or the vibrating electromechanical circuit in the prompting device can send out the acoustic signal or the vibrating signal, which can remind the user to avoid the loss of the mobile phone.

Description

The preventing handset from losing reminiscences

The utility model is a kind of preventing handset from losing reminiscences that prevents lost mobile phone and use.

Along with the continuous development of communication career, the number that has mobile phone (also claiming mobile phone) increases year by year.At the commercial activity center and the visible everywhere cellie in the food and drink place of entertaining the friends and guests.For the ease of in time use mobile phone communicate information, cellie often mobile phone to be placed on negotiation table or the dining table, when negotiation or have dinner finish after, easily mobile phone is forgotten and is lost, bring the very big indirect loss that directly reaches economically for the cellie.

At above-mentioned situation, the purpose of this utility model is exactly to provide a preventing handset from losing reminiscences that can prevent that lost mobile phone from using for the cellie.

The purpose of this utility model is to realize like this; It comprises code signal reflector and the portable prompting device that places in the hand phone battery case, but this prompting device comprises signal receiving circuit and decoding circuit that links to each other with this signal receiving circuit by shaping amplification circuit and acoustics circuit and the vibrating motor circuit that is connected the decoding circuit output that the received encoded signal reflector is signaled.Code signal reflector in hand phone battery case and prompting device separate, and when exceeding coverage, prompting device is sounding tone signal or vibration signal prompting cellie just, in order to avoid mobile phone is forgotten and lost.

The utility model has the advantages that: can prevent because of forgeing lost mobile phone, can prevent that also the burglar from stealing mobile phone smoothly, and also simple in structure, easy to use.

Below in conjunction with accompanying drawing the utility model is explained.

Fig. 1 is the utility model circuit block diagram.

Fig. 2 is a code signal reflector electrical schematic diagram.

Fig. 3 is the prompting device electrical schematic diagram.

By accompanying drawing as can be known, the utility model mainly is made of code signal reflector and prompting device two parts.Wherein the code signal reflector comprises by the coding circuit of integrated IC1 (12C508) and crystal oscillator T1 formation with by transmitting antenna L ₀, resistance R 1 '-R4 ', capacitor C 1 '-C4 ', inductance coil L1, L2 and triode V ₀The radiating circuit that constitutes.The at first encoded circuit of signal is encoded, behind the coding, with the transmitting antenna L of frequency in radiating circuit of crystal oscillator generation ₀Launch, the emission radius of its maximum is 10 meters, and the printed wire that electronic component in the code signal reflector and emission electric wire are installed in the hand phone battery case is extremely gone up.Prompting device comprise signal receiving circuit, shaping amplification circuit, decoding circuit and acoustics circuit, vibrating motor circuit wherein signal receiving circuit mainly constitute by reception antenna L, capacitor C 2-C6, resistance R 2, R4, inductance component L 3, L4 and triode V1.The open and close of selector switch K1 can change receiving range.In coverage, deliver to shaping amplification circuit by the signal that signal receiving circuit receives; Shaping amplification circuit mainly is made of capacitor C 7, resistance R 5 and amplifying circuit IC2 elements such as (LM358).The signal that is received by signal receiving circuit enters LM358 after capacitor C 7, resistance R 5 couplings carries out level and amplifies, and enters in the decoding circuit again; Decoding circuit mainly is made of elements such as integrated IC3 (12C508), crystal oscillator T2, resistance R 18.Integrated IC3 and integrated IC1 in the code signal radiating circuit in this decoding circuit are identical, supporting use.When coding coincide, 6 pin of IC3 were promptly exported a level signal and are given acoustics circuit or vibrating motor circuit in the decoding circuit, and the 6 pin output low level signals of IC3 exceed coverage and promptly export high level signal in coverage; Acoustics circuit mainly is made of music module IC4 (KD56012) and triode V2, loud speaker Y, resistance R 17, when 6 pin of IC3 in the decoding circuit are exported high level signal, the music module IC4 work that is triggered is sent musical sound by loud speaker, to remind the cellie.The vibrating motor circuit mainly is made of vibrating motor D, resistance R 16, R19, triode V3,6 pin of IC3 output high level in decoding circuit, and triode V3 saturation conduction, vibrating motor work is with the vibration signal prompting mobile telephone set user who produces; Music tip and vibration prompt can be selected by K switch 2.Battery E among Fig. 3 is the used dc supply of prompting device, and K is a mains switch.Electronic component in the prompting device can place on the printed substrate of carrying box body.K among Fig. 2 ₀Be code signal reflector operating switch, when being battery of mobile phone E ₀During charging, with K switch ₀Disconnect.Resistance R plays the dividing potential drop metering function, because of code signal reflector normal working voltage is 2.5-4.5V, chooses different R values, applicable to dissimilar batteries of mobile phone.Oppositely hold-off diode D1 can prevent when battery charge because of forgetting cut-off switch K ₀Damage the code signal transmitter circuit.

Claims (1)

1, a kind of preventing handset from losing reminiscences, it is characterized in that: it comprises code signal reflector and the portable prompting device that places in the hand phone battery case, but this prompting device comprises signal receiving circuit and decoding circuit that links to each other with this signal receiving circuit by shaping amplification circuit and acoustics circuit and the vibrating motor circuit that is connected the decoding circuit output that the received encoded signal reflector is signaled.

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