CN2266160Y - Loss-proof device for mobile telephone - Google Patents

Abstract

The anti-loss device for mobile telephone set includes one coding emitter and one decoding receiver, and features that the coding emitter is installed inside the battery box, the decoding receiver has output connected to the logic switch and the sound unit has input connected to the logic switch. The utility model can produce sound or light prompt when the mobile phone is at a certain distance from the user, thereby effectively preventing the mobile phone from being lost or stolen. And the transmitting device is positioned in the battery box of the mobile phone, so that the external structure of the mobile phone battery is not changed, and the normal use of the mobile phone is not influenced.

Description

The anti-device of losing of mobile telephone

The anti-device of losing of a kind of mobile telephone, what relate to the electricity consumption transmission can provide the telltale that can listen with visible indication.

Along with rhythm of life is accelerated, this specific communication instrument of mobile telephone is also more and more universal, and it is also increasing that mobile telephone is lost phenomenon.How to prevent the loss of mobile telephone, still solve at present not yet in effectly.Chinese patent application discloses for No. 92200693.8 a kind of " the anti-robbery-proof device of holding concurrently of losing of portable type ", is made up of two identical control enclosurees of internal circuit.Adopt the two-way communication mode, emission simultaneously also receives simultaneously, each control enclosure includes: emitter receiving trap, alerting signal amplifier and hummer, emitter cooperates password selector switch generation oscillator signal to send the transmitter emission by the cryptography device, receiving trap send the cryptogram decoding device of band decoding selector switch by the receiver received signal, and password is selected correctly then pilot lamp demonstration, if signal does not receive, two receiving traps are all sent alerting signal.

The purpose of this utility model provides the anti-device of losing of a kind of mobile telephone, after mobile telephone is installed this device, when distance user certain distance, can send electric signal, the prompting user.

Adopt such technical scheme according to above-mentioned purpose the utility model: this anti-loss device comprises the transmitter of a codified, a decodable receiver, the transmitter that is characterized in codified is installed in the mobile telephone battery case, decodable receiver output termination logic switch, the phonation unit input connects logic switch.

For increasing cue, logic switch also can connect luminescence unit again.

During use, the codified transmitter is launched encoded pulse modulated long wave, and decodable receiver is with the long-wave signal demodulation and the decoding of receiving.Through comparing, when encoding and decoding were consistent, decodable receiver output terminal was exported high level, and logic switch disconnects, and phonation unit is not worked.If described receiving element can not receive modulation signal, then logic switch is open-minded, and prompting sound is sent in phonation unit work.If after connecting luminescence unit, also can send prompting light.

The utility model can the sounding prompting during apart from user's certain distance at mobile telephone, or luminous prompting, has prevented effectively that mobile telephone from losing or stolen.And emitter is positioned at the mobile telephone battery case, neither changes mobile telephone outside batteries structure, does not influence the normal use of mobile telephone again.

Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is for preventing losing the device circuit schematic diagram according to the mobile telephone that the utility model proposes.

Fig. 2 is radiating portion circuit theory diagrams among Fig. 1.

Fig. 3 is installed in structural representation in the mobile telephone battery case for radiating portion.

Be further described prevent losing device according to the mobile telephone that the utility model proposes below in conjunction with drawings and Examples.

As shown in Figure 1, receiver is by ic chip ₃And IC ₄Constitute.IC ₄Receive integrated package for long wave is special-purpose, model T631, its 1 pin is a receiving antenna, the output of 3 pin, 2 pin connect power supply, 4 pin ground connection.IC ₃Be the decoding integrated package, model is DV5028, and its 14 pin meets IC ₄3 pin, 10 pin connect power supply, 9 pin ground connection, 1～13 pin connects K switch respectively ₂₅～K ₄₈Capacitor C ₂Be connected between power supply and the ground.Resistance R ₂Be connected on IC ₃16 pin and 15 pin between.IC ₄17 pin be output terminal.The logic switch unit is by triode V ₁With diode D ₂And resistance R ₄, R ₅Constitute.D ₂Be connected on IC ₃17 pin and V ₁Between the base stage.Work as IC ₃17 pin output high level the time, D ₂End V ₁Conducting; Otherwise, V ₁End.Phonation unit is by music integrated block IC ₅, triode V ₂, loudspeaker Y, resistance R ₆, capacitor C ₃Form.IC ₆Model be KD-9300, its 1 pin connects power supply, 2 pin meet V ₁Collector, 3 pin ground connection, 4 pin are through resistance R ₆After meet V ₂Base stage.V ₂Grounded emitter, collector meet loudspeaker Y.IC ₅Output signal through V ₂After the amplification, drive loudspeaker Y sounding.

In order to detect the battery electric quantity situation, can increase by an electric weight detecting unit, this unit is connected between logic switch and the power supply.It is by IC ₆And diode D ₃Form IC ₆Model be S-807.Diode D ₃Be connected on V ₁The same IC of base stage ₆1 pin between, IC ₆2 pin connect power supply, 3 pin ground connection.

Luminescence unit is by LED and resistance R ₃Form, be connected on power supply and D after the two serial connection ₂Between the negative pole.

Referring to Fig. 2, transmitter is by ic chip again ₂And IC ₁Form IC ₁Model is DV5026, IC ₂Model is T630.IC ₂1 pin sending and receiving penetrate antenna, 2 pin connect power supply, 4 pin ground connection, 3 pin meet IC ₁17 pin.IC ₁18 pin connect power supply, 1～13 pin meets code switch K ₁～K ₂₄, 14 pin, 9 pin ground connection.Resistance R ₁Be connected on IC ₁16 pin and 15 pin between.K switch and diode D ₁Be serially connected in power supply and IC ₁18 pin between.

Fig. 3 is a transmitter mounting structure synoptic diagram, and transmitter (3) is fixed in the battery case (1), and same battery (4) is arranged side by side, and K switch (2) is installed on the base plate, but does not influence the installation of battery case.

Claims (3)

1. a mobile telephone prevents losing device, the transmitter that comprises a codified, a decodable receiver is characterized in that the transmitter of codified is installed in the mobile telephone battery case, decodable receiver output termination logic switch, the phonation unit input connects logic switch.

2. mobile telephone is anti-according to claim 1 sends the mistake device, it is characterized in that being connected between logic switch is with power supply luminescence unit.

3. mobile telephone is anti-according to claim 1 sends the mistake device, it is characterized in that being connected between logic switch is with power supply the electric weight detecting unit.

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