CN101132460A - Telephone anti-theft device - Google Patents
Telephone anti-theft device Download PDFInfo
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- CN101132460A CN101132460A CNA2007100186265A CN200710018626A CN101132460A CN 101132460 A CN101132460 A CN 101132460A CN A2007100186265 A CNA2007100186265 A CN A2007100186265A CN 200710018626 A CN200710018626 A CN 200710018626A CN 101132460 A CN101132460 A CN 101132460A
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Abstract
This invention relates to an anti-stealing device of a telephone composed of a microprocessor unit, a circuit detecting interface unit, a phone recording module, a LCD display screen and a control button and designed based on the theory that dual-audio dialing and phone are different in different state circuit signals, which can judge if someone steals making phone calls by identifying the signal combining with a state of a user phone, if someone steals making phone call, it identifies, stores and displays the number or records the call content for a period of time by the audio identifying process of the microprocessor and warns the stealer with phones and forces it stopping the call, said device also includes a function of leaving word and enters into the word-leaving state to record the message automatically and users can find them by pressing the key.
Description
Technical field
The present invention relates to a kind of telephone anti-theft device, belong to communication articles for use field.
Background technology
At present, general telephone anti-theft device function is comparatively single.Steal line if any the people and make a phone call, it can only play audible alarm and warning effect.Know that having the people once to steal dials even if the phone owner hears to report to the police, can not have other clue again, also can't further trace.
Summary of the invention
In order to address the above problem, the present invention has designed a kind of SCM Based a kind of telephone anti-theft device.
The technical scheme of being taked: the present invention tracks down interface unit, voice recording-reproducing assembly, LCD display by microprocessor unit, circuit and controls button and form.
The present invention is based on phone dual-tone dialing principle and phone at different conditions, line signal has nothing in common with each other this mechanism and designs.Under phone off-hook, on-hook and two or three kind of state of ring, line signal has a great difference, can determine in conjunction with the state of subsets whether the someone usurps phone again by distinguishing this signal.Usurp phone if any the people, then the audio identification program by microprocessor to dial the number and discern, with its storage and demonstration.Further investigate as need, also can record the dialog context of certain hour.Also the warning clause of recording in advance can be played to after having recorded and steal the hitter, and cutoff call by force.This device can prestore and record several information so simultaneously, and the user can thumb out successively by button operation with number and corresponding recording, so just has enough information to determine to steal hitter's identity.The also integrated incoming call message-leaving function of this device, the state by identification bell signal and subsets can enter message state automatically, and the recording that will record in advance earlier prompting plays to the calling party automatically, and automatic recording is left a message then.But this device automatic recording is repeatedly left a message and is placed on different memory paragraphs, and the user can thumb out each time message by button.When the user calls, by number identification and demonstration, also can on display screen, the explicit user master dial the number, there is not the function that dialing is now shown to remedy some telephone sets.
Described microprocessor unit is made up of single-chip microcomputer and peripheral circuit thereof, is the core of whole system.Be responsible on the one hand line conditions is intercepted, also the dialing audio frequency distinguished; On the other hand, it is also controlled voice recording-reproducing assembly, makes real-time recording playback voice messaging.It is also accepted key command and makes corresponding operation in addition.
Described circuit is tracked down interface unit, is made up of signal isolation circuit and Signal Matching circuit, realizes being connected of microprocessor and telephone line, and different voltage signals is carried out corresponding conversion to reach mutual coupling.The main photoelectric isolating device that adopts.
Voice recording-reproducing assembly adopts integrated recording playback module, and it passes through serial communication with microprocessor, and the control by microprocessor can realize that voice segment records and play.
LCD display adopts the segment encode display screen, can show once stealing the number and the time of dialling, and also can show local outgoing call.Operational and controlled key button provides operational order to microprocessor, makes it make corresponding operating.
The invention has the beneficial effects as follows, remedied the deficiency of present telephone anti-theft device function singleness, can realize stealing dialing demonstration and storage, and optionally to its dialog context automatic recording and playback, for the user provides enough following up a clue, also can give a warning to stealing the hitter automatically, so just effectively prevent the free call on sb. else's expense through illegal means behavior.This device also all has the automatic message-leaving function of phone, the main Presentation Function of dialling the number, and has remedied the deficiency of ordinary telephone set, for the user provides great convenience.This device volume is small and exquisite, and is easy for installation, and cost is also low.
Description of drawings
Fig. 1 is that this device circuit is always schemed
Fig. 2 tracks down interface circuit figure
Fig. 3 is the voice recording-reproducing assembly unit
Fig. 4 is the LCD display unit
Fig. 5 is a system reset circuit
Fig. 6 is jtag interface figure
Embodiment
Be an exemplary embodiments of the present invention below, specify as follows in conjunction with the accompanying drawings:
Present embodiment is made up of hardware and software two parts.
This embodiment hardware components is tracked down interface unit, voice recording-reproducing assembly, LCD display by microprocessor unit, circuit and is controlled button and form.
Microprocessor unit (MPU) is that the core of present embodiment is data processing and control centre.It is connected by the SPI serial ports with voice module.It is by single-chip microcomputer, reset circuit, and crystal oscillating circuit and DLL (dynamic link library) circuit are formed.
The single-chip microcomputer of present embodiment is selected the 16-bit single-chip processor MSP430F412 (U1) of TI company for use, its integrated 96 sections LCD drive circuit, high speed crystal oscillator, 16 bit timing devices (Timer_A).Low supply voltage scope: 1.8V---3.6V, super low-power consumption, but the FLASH internal memory of in-circuit emulation.This single-chip microcomputer also carries analog comparator, and 16 bit timing devices (Timer_A) have catches/comparing function.It directly links to each other with LCD segment encode display screen.
Reset circuit adopts the chip MAX809STR (U3) that resets of U.S. letter company, can produce reliable reset signal and reset for single-chip microcomputer.Its circuit as shown in Figure 5.Crystal oscillating circuit is by crystal oscillator (XTAL1) and 56pF electric capacity (C4, C5) composition of 8MHz.DLL (dynamic link library) JTAG mouth is made of the JP1 among Fig. 6, can realize online programming.
Circuit is tracked down interface unit as shown in Figure 2, because the interference that telephone line adheres to is bigger, connects so this link adopts photoelectric isolating device to carry out signal.Stream bridge heap (D1) signal that telephone line polarity is indefinite is converted into one way signal flows to light-coupled isolation device (U6) after resistance (R5) current limliting luminous tube, be coupled to photoelectric tube through light path, one the tunnel receives on the P1.6 mouth of (U1) of single-chip microcomputer through resistance (R13), is used for circuit and intercepts; As long as it is suitable that resistance (R5) is selected for use, utilize the capture function of single-chip microcomputer can differentiate circuit by programming and be in on-hook, off-hook or ringing condition.As be in and usurp off hook state and also can further catch and realize that double-tone discerns frequently.Receive on the audio input port of voice recording-reproducing assembly (U2) through resistance (R10) electric capacity (C11) on another road, is used for recorded speech.Resistance among Fig. 2 (R8) is the line current sample resistance, is used to differentiate the state of local user's phone.As local call be in off hook state then resistance (R8) produce certain voltage and low level will occur through the P1.7 mouth of optocoupler (U5) coupling single-chip microcomputer (U1), show local call off-hook with this, the status signal of the P1.6 mouth of (U1) of this signal cooperation single-chip microcomputer can be told on-hook, local call off-hook, usurp phone off-hook and these several states of incoming call ring.The P13 pin output audio signal of voice recording-reproducing assembly (U2) is connected on the luminous tube of two-way optocoupler (U4) through resistance (R6).In optocoupler (U4) is operated between linear zone, so just corresponding voice can be play in the line, be realized to the warning of appropriator with to caller's leaving message prompt.Whether the negative electrode of the light-emitting diode of two-way optocoupler (U4) is received on the P1.5 pin of single-chip microcomputer (U1), realize to the control of circuit playback, this function forbidding when this pin is high level.(J1 J2) is respectively the incoming line and the line outlet of telephone line to interface.During use, only need be concatenated into this device in the circuit by these two interfaces and get final product.
The ISD4004-1 voice recording and playback ic of blue or green ShiJi Co., Ltd during voice module (U2) adopts, 960 seconds record lengths can be divided 2400 sections, 400 milliseconds of information resolution.It and single-chip microcomputer (U1) are by the SPI serial communication.As shown in Figure 3, dialog context and incoming call message when usurping phone be recorded and be play to present embodiment will with it, and it also is used for recording various prompt tones and warning tones.13 pin are audio frequency output pins, can directly drive the small-power loudspeaker.
LCD segment encode display screen, present embodiment are selected 12 eight segment encode display screens for use, can show telephone number and time.It directly links to each other with the LCD driving interface of single-chip microcomputer.
Software section, this device adopts the C Programming with Pascal Language of IAR platform, and program adopts modularized design, comprises that mainly initialization, state recognition, the identification of audio frequency number, speech recording and reproducing are controlled, the several modules of demonstration are formed.
Because the online download programing function of MSP430 series monolithic support program can pass through jtag interface (J1) and realize.System debug is also very convenient.
Claims (7)
1. telephone anti-theft device is characterized in that: tracked down interface unit, voice recording-reproducing assembly, LCD display and controlled button and form by microprocessor unit, circuit; Microprocessor is intercepted interface unit by circuit line status is discerned, and to dial the number and discern and show, the robber is put through words content automatic recording, if any sending a telegram here and the ring unanswered then enters message state automatically.
2. according to the described telephone anti-theft device of claim 1, it is characterized in that described circuit is tracked down interface unit and adopted photoelectric isolating device to carry out the signal connection.
3. according to the described telephone anti-theft device of claim 1, it is characterized in that, it is one way signal flows to light-coupled isolation device (U6) after resistance (R5) current limliting luminous tube that described circuit is tracked down in the interface unit rectifier bridge heap (D1) conversion of signals that telephone line polarity is indefinite, be coupled to photoelectric tube through light path, one the tunnel receives on the P1.6 mouth of (U1) of single-chip microcomputer through resistance (R13), is used for circuit and intercepts; Receive on the audio input port of voice recording-reproducing assembly (U2) through resistance (R10) electric capacity (C11) on another road, is used for recorded speech.
4. according to the described telephone anti-theft device of claim 1, it is characterized in that it is the line current sample resistance that described circuit is tracked down resistance in the interface unit (R8), is used to differentiate the state of local user's phone.
5. according to the described telephone anti-theft device of claim 1, it is characterized in that, the P13 pin output audio signal that described circuit is tracked down voice recording-reproducing assembly in the interface unit (U2) is connected on the luminous tube of two-way optocoupler (U4) through resistance (R6), in optocoupler (U4) is operated between linear zone.
6. according to the described telephone anti-theft device of claim 1, it is characterized in that, whether described circuit is tracked down the negative electrode of the light-emitting diode of two-way optocoupler (U4) in the interface unit and is received on the P1.5 pin of single-chip microcomputer (U1), realize to the control of circuit playback, this function forbidding when this pin is high level.
7. according to the described telephone anti-theft device of claim 1, it is characterized in that described circuit is tracked down interface in the interface unit, and (J1 J2) is respectively the incoming line and the line outlet of telephone line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100186265A CN101132460A (en) | 2007-09-10 | 2007-09-10 | Telephone anti-theft device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100186265A CN101132460A (en) | 2007-09-10 | 2007-09-10 | Telephone anti-theft device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101132460A true CN101132460A (en) | 2008-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100186265A Pending CN101132460A (en) | 2007-09-10 | 2007-09-10 | Telephone anti-theft device |
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| CN (1) | CN101132460A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101976828A (en) * | 2010-11-12 | 2011-02-16 | 重庆市智能水表有限责任公司 | M-BUS (Meter-Bus) intrinsic safety barrier |
| CN102572125A (en) * | 2012-02-15 | 2012-07-11 | 何林 | Telephone stealing apprizing device |
| CN102684918A (en) * | 2012-05-04 | 2012-09-19 | 武汉日电光通信工业有限公司 | System and method for alarm analysis based on DTMF (dual-tone multi-frequency) audio integrated network management |
-
2007
- 2007-09-10 CN CNA2007100186265A patent/CN101132460A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101976828A (en) * | 2010-11-12 | 2011-02-16 | 重庆市智能水表有限责任公司 | M-BUS (Meter-Bus) intrinsic safety barrier |
| CN101976828B (en) * | 2010-11-12 | 2013-03-27 | 重庆市智能水表有限责任公司 | M-BUS (Meter-Bus) intrinsic safety barrier |
| CN102572125A (en) * | 2012-02-15 | 2012-07-11 | 何林 | Telephone stealing apprizing device |
| CN102684918A (en) * | 2012-05-04 | 2012-09-19 | 武汉日电光通信工业有限公司 | System and method for alarm analysis based on DTMF (dual-tone multi-frequency) audio integrated network management |
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| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Liu Zhaoyuan Document name: Notification of before Expiration of Request of Examination as to Substance |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080227 |