CN1177244A - Secret, counter-wiretap, double direction telephone automatically monitoring recording circuit - Google Patents
Secret, counter-wiretap, double direction telephone automatically monitoring recording circuit Download PDFInfo
- Publication number
- CN1177244A CN1177244A CN 96118344 CN96118344A CN1177244A CN 1177244 A CN1177244 A CN 1177244A CN 96118344 CN96118344 CN 96118344 CN 96118344 A CN96118344 A CN 96118344A CN 1177244 A CN1177244 A CN 1177244A
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- circuit
- secret
- eavesdrop
- voltage
- pin
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The system is composed of micro-singnal pick-up unit, isolation couple unit, audio amplifying and monitoring unit, bang-bang bleeder circuit and reiving amplifying circuit of current or voltage controlling relay. The both sides of converse do not know that the telephone have been monitored and recorded. The monitor and recorder connected to communication line can not be detected by technical method, so the system has security and opposing anti-detectophone function. It can automonitor and autorecord the telephone dialled in or out and reduce difficulty of monitoring-recording and amount of work. The circuit use common recorder, the cost is low and the operation is simple. The ivention is suited for detection and business field extenively.
Description
Phone, as the modern communication instrument, extensive use in people's work, life has brought convenience for work, life.But all there is duality in anything, and telephonic communication also becomes the means of offender's contact, transmission information in the work of being convenient for people to, life.Like this, law enforcement agency usually needs the phone of object of suspicion is carried out monitoring recording in the process of investigating the case.Can also not have special-purpose monitoring recording equipment now, the method for generally taking to incorporate dtelegraphone into is carried out.There are the following problems for the method:
1, confidentiality is poor: when monitoring, recording, be equivalent to insert a party-line, have shunting action, experiencedly discovered easily phone and monitored, particularly recording operation, change noise that tape and surrounding environment etc. cause and scurry into circuit and easily make and discover by the monitoring recording person by the monitoring recording person.
2, instead " anti-eavesdrop ": at present, phone is antitheft on the market, anti-eavesdrop device kind is a lot, as long as the telephone subscriber has used antitheft, anti-eavesdrop device then can't be implemented monitoring recording to it.
3, can not realize two-way AM automatic monitoring, recording: at present, use telegraphone to monitor, record, the phone of can only monitor, typing being thrown into.Then can't realize automatically monitoring, recording to the phone of getting.
4, job insecurity, noise is big, cost is high.
Carry out the telephone monitoring recording and have the problems referred to above owing to take to incorporate into the mode of dtelegraphone, making investigates the case by telephonic communication can fully use under this channel, has seriously influenced the investigation of judicial department to case.
Purpose of the present invention will provide a kind of exactly can overcome existing monitoring, the existing the problems referred to above of recording way, has the circuit of secret, anti-" anti-eavesdrop ", two-way telephone AM automatic monitoring, sound-recording function.
In order to realize the foregoing invention purpose, the present invention has adopted following technical proposals:
Form secret, anti-" anti-eavesdrop ", two-way telephone AM automatic monitoring, recording circuit by exchanging micro-signal pick-up circuit, isolation coupling circuit, audio frequency amplification monitoring circuit, switching regulator bleeder circuit and voltage-type or current-control type relay driving amplifying circuit.
Owing to adopted technique scheme, the present invention has ideally realized its goal of the invention:
Both call sides is monitored, is recorded in subjective no any sensation phone, adds monitoring on the communication line, sound pick-up outfit can not detect by technological means, has secret, anti-" anti-eavesdrop " function; All can realize automatically monitoring recording to the phone of squeezing into, getting, the difficulty and the workload of monitoring, recording are reduced greatly; Adopt general recorder, its cost is low, simple to operation.
Description of drawings:
Accompanying drawing is a circuit interconnect pattern of the present invention
Embodiment:
Accompanying drawing has been described one embodiment of the present of invention, is described in detail referring now to accompanying drawing:
The present invention forms secret, anti-" anti-eavesdrop ", two-way telephone AM automatic monitoring, recording circuit by exchanging micro-singnal pick-up circuit, isolation coupling circuit, audio frequency amplification monitoring circuit, switching regulator bleeder circuit and voltage or current-control type relay driving amplifying circuit.
The isolation coupling circuit is the transformer isolation coupling circuit.It is the audio frequency amplification circuit that audio frequency amplifies monitoring circuit.The switching regulator bleeder circuit is an insulated switch formula bleeder circuit.It is equivalent Composite Double collector electrode NPN pipe amplifying circuit that voltage or current-control type relay drive amplifying circuit.DC-stabilized circuit is a resistance-capacitance depressurization formula direct current clamp voltage stabilizing circuit.Link to each other with communication line by the polarity of voltage positioning circuit with the switch bleeder circuit at interchange micro-signal pick-up circuit.
Exchange the micro-signal pick-up circuit by R
0, L
1, C
0Be formed by connecting R
0, C
0, L
1String is got R successively
0The other end line positive pole of answering, C
0The other end line negative pole of answering; The isolation coupling circuit is by C
1, L
1, L
2, C
2Be formed by connecting C
1, L
2, C
2Contact successively.C
1Another termination recorder microphone input hole positive pole, C
2Another termination recorder microphone input hole negative pole; Audio frequency amplifies monitoring circuit by LM386, DW
3, C
6-9, R
9, CZ is formed by connecting, 1 pin and 8 pin of LM386 pass through C
8, R
9Serial connection, 5 pin pass through C
9Meet CZ, 3 pin pass through C
8Be connected in C
1, L
2Between, and pass through C
7With 2 pin, 4 pin ground connection; 6 pin pass through DW
3Connect power output end one utmost point; The switching regulator bleeder circuit is by R
1-4, D
5, DW
1Be formed by connecting D
5, R
1, DW
1, R
2, R
3Be serially connected between the negative positive pole of words line R
3With R
2The indirect power supply is exported another utmost point, DW
1With R
2Indirect voltage or current-control type relay drive the BG of amplifying circuit
1Base stage; Voltage or current-control type relay drive amplifying circuit by R
4, R
5, BG
1, BG
2Be formed by connecting R with J
4With BG
1Base stage together with R
2, DW
1Middle continuous, BG
1Emitter meets BG
2Base stage, BG
1, BG
2Respectively by J, R
5With R
4The other end connects power supply one utmost point together, and the BG2 emitter connects another utmost point of power supply.D.C. regulated power supply is by C
3-5, D
6-9, R
7, R
8, DW
2, 7809 be formed by connecting C
3, R
7Parallel connection, an end and J
-1AC power together, the other end and D
6Anodal, D
9Negative pole links, D
7Negative pole, D
8Positive pole connects AC power, D
7, D
9Positive pole meets C
4One end, DW
2One end and 7809 pin 1, C
5One termination voltage or current-control type relay drive the BG of amplifying circuit
2Emitter, D
8, D
6Negative pole and C
4The other end is with DW
2The R of polyphone
8Another termination 7809 pin 2,7809 pin 3 pass through R respectively
5, J meets the IBG that voltage or Current Control miniature relay drive amplifying circuit
1, BG
2Collector electrode; The polarity of voltage positioning circuit is by D
1-4Form D
1Anodal, D
4Negative pole is connected one of letter circuit line, D
3Anodal, D
2Negative pole is connected another line of letter circuit, D
1, D
3Negative pole meets the R of isolation coupling circuit
0, D
2Anodal, D
4Positive pole meets the C of isolation coupling circuit
0
The specification of circuit elements device is: D
1-D
4Be IN4004 * 4, D
6-D
9Be IN4007 * 4, R
0Be 270K, C
0Be 0.1 μ F, L
1, L
2Be 1: 1 primary and secondary coil of transformer, C
1, C
2Be 2.2 μ F, R
1, R
2Be 2.2M Ω, DW
1Be 18V voltage stabilizing didoe, D
5, D
10Be IN4001-IN4007, R
3Be 1.5K, R
4Be 1M, R
5Be 10K, R
6Be 5.1K, LED is a light-emitting diode, and J is the 9V relay, and BG1, BG2 are the NPN pipe of β＞80, C
3Be 100nF/400V, R
7Be 560K, C
4Be 220 μ F, DW
2Be 12V voltage stabilizing didoe, R
8Be 10 Ω, C
5Be 100 μ F, DW
3Be 4V voltage stabilizing didoe, R
9Be 1K, C
6-C
9Be respectively 0.1 μ, 0.01 μ, 10 μ, 100 μ, LM386 are the audio frequency amplifier integrated block, output termination loudspeaker or earphone.
In order to be convenient to judge monitoring recording circuit call scenarios, at the BG of monitoring recording circuit
2Be serially connected with R between collector electrode and the J
8And LED.
Operation principle of the present invention and process are as follows:
When the quilt monitoring, when dtelegraphone is in hook state, switch is sent-48V voltage, and this negative voltage and D.C. regulated power supply distribute through current/voltage, the output negative potential, make voltage or Current Control Relay drive amplifying circuit and be in cut-off state, controlling organization is failure to actuate, and recorder is not worked.
When being had phone to get by monitoring circuit, when dialing, off-hook and conversation, the direct voltage that switch is sent, be added on the switching regulator bleeder circuit, synthetic with the power supply of DC-stabilized circuit output, the output positive potential makes voltage or controlling organization send actuating signal, recorder begins recording, and energy will be from the whole typings of the sound that dialing tone begins.The telephone set on-hook promptly stops recording, and circuit recovers initial standby condition automatically.
Throw into as phone, when being monitored the phone off-hook, switch is sent-7V left and right sides voltage, and same principle starts recorder, Called Onhook, and recording promptly stops automatically, to throwing phone into, begins typing from ringing tone.
The telephone relation audio signal outputs to recorder MIC through interchange micro-signal pick-up circuit, isolation coupling circuit.
Claims (10)
1, a kind of secret, anti-" anti-eavesdrop ", two-way telephone automatically monitoring recording circuit is characterized in that this circuit amplifies monitoring circuit, switching regulator bleeder circuit and voltage by interchange micro-signal pick-up circuit, isolation coupling circuit, audio frequency or current-control type relay driving amplifying circuit is formed.
2, secret, anti-" anti-eavesdrop ", two-way telephone automatically monitoring recording circuit according to claim 1 is characterized in that every closing circuit be the transformer isolation coupling circuit.
3, secret, anti-" anti-eavesdrop ", two-way telephone automatically monitoring recording circuit according to claim 1 is characterized in that it is the audio frequency amplification circuit that audio frequency amplifies monitoring circuit.
4, secret, anti-" anti-eavesdrop ", two-way telephone automatically monitoring recording circuit according to claim 1 is characterized in that the switching regulator bleeder circuit is an insulated switch formula bleeder circuit.
5, secret, anti-" anti-eavesdrop ", two-way telephone automatically monitoring recording circuit according to claim 1 is characterized in that it is equivalent Composite Double collector electrode NPN pipe amplifying circuit that voltage or current-control type relay drive amplifying circuit.
6, secret, anti-" anti-eavesdrop ", two-way telephone automatically monitoring recording circuit according to claim 3 is characterized in that DC-stabilized circuit is a resistance-capacitance depressurization formula direct current clamp voltage stabilizing circuit.
7, secret, anti-" anti-eavesdrop ", two-way telephone automatically monitoring recording circuit according to claim 1 is characterized in that linking to each other with communication line by the polarity of voltage positioning circuit with the switch bleeder circuit at interchange micro-signal pick-up circuit.
8, according to claim 1 or 2 or 4 or 5 or 6 or 7 or 8 described secret, anti-" anti-eavesdrop ", two-way telephone automatically monitoring recording circuits, it is characterized in that exchanging the micro-signal pick-up circuit by R
0, L
1, C
0Be formed by connecting R
0, C
0, L
1String is got R successively
0The other end line positive pole of answering, C
0The other end line negative pole of answering; The isolation coupling circuit is by C
1, L
1, L
2, C
2Be formed by connecting C
1, L
2, C
2Contact successively.C
1Another termination recorder microphone input hole positive pole, C
2Another termination recorder microphone input hole negative pole; Audio frequency amplifies monitoring circuit by LM386, DW
3, C
6-9, R
9, CZ is formed by connecting, 1 pin and 8 pin of LM386 pass through C
8, R
9Serial connection, 5 pin pass through C
9Meet CZ, 3 pin pass through C
6Be connected in C
1, L
2Between, and pass through C
7With 2 pin, 4 pin ground connection; 6 pin pass through DW
3Connect power output end one utmost point; The switching regulator bleeder circuit is by R
1～4, D
5, DW
1Be formed by connecting D
5, R
1, DW
1, R
2, R
3Be serially connected between the negative positive pole of words line R
3With R
2The indirect power supply is exported another utmost point, DW
1With R
2Indirect voltage or current-control type relay drive the BG of amplifying circuit
1Base stage; Voltage or current-control type relay drive amplifying circuit by R
4, R
5, BG
1, BG
2Be formed by connecting R with J
4With BG
1Base stage together with R
2, DW
1Middle continuous, BG
1Emitter meets BG
2Base stage, BG
1, BG
2Respectively by J, R
5With R
4The other end connects power supply one utmost point together, and the BG2 emitter connects another utmost point of power supply.
9, secret, anti-" anti-eavesdrop ", two-way telephone automatically monitoring recording circuit according to claim 8 is characterized in that D.C. regulated power supply is by C
3-5, D
6-9, R
7, R
8, DW
2, 7809 be formed by connecting C
3, R
7Parallel connection, an end and J
-1Connect AC power together, the other end and D
6Anodal, D
9Negative pole links, D
7Negative pole, D
8Positive pole connects AC power, D
7, D
9Positive pole and C
4One end, DW
2One end, 78099 pin 1, C
5One termination voltage or current-control type relay drive the BG of amplifying circuit
2Emitter, D
8, D
6Negative pole and C
4The other end is with DW
2The R of polyphone
3Another termination 7809 pin 2,7809 pin 3 pass through R
5, J meets the BG that voltage or Current Control miniature relay drive amplifying circuit respectively
1, BG
2Collector electrode; The polarity of voltage positioning circuit is by D
1-4Form D
1Anodal, D
4Negative pole is connected letter circuit one line, D
3Anodal, D
2Negative pole is connected another line of letter circuit, D
1, D
3Negative pole meets the R of isolation coupling circuit
0, D
2Anodal, D
4Positive pole meets the C of isolation coupling circuit
0
10, secret, anti-" anti-eavesdrop ", two-way telephone automatically monitoring recording circuit according to claim 8 is characterized in that the specification of circuit elements device is: D
1-D
4Be IN4004 * 4, D
6-D
9Be IN4007 * 4, R
0Be 270K, C
0Be 0.1 μ F, L
1, L
2Be 1: 1 primary and secondary coil of transformer, C
1, C
2Be 2.2 μ F, R
1, R
2Be 2.2M Ω, DW
1Be 18V voltage stabilizing didoe D
5, D
10Be IN4001-IN4007, R
3Be 1.5K, R
4Be 1M, R
5Be 10K, R
6Be 5.1K, LED is a light-emitting diode, and J is the 9V relay, BG
1, BG
2Be the NPN pipe of β＞80, C
3Be 100nF/400V, R
7Be 560K, C
4Be 220 μ F, DW
2Be 12V voltage stabilizing didoe, R
8Be 10 Ω, C
5Be 100 μ F, DW
3Be 4V voltage stabilizing didoe, R
9Be 1K, C
6-C
9Be respectively 0.1 μ, 0.01 μ, 10 μ, 100 μ, LM386 audio frequency amplifier output termination loudspeaker or earphone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96118344 CN1177244A (en) | 1996-09-17 | 1996-09-17 | Secret, counter-wiretap, double direction telephone automatically monitoring recording circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96118344 CN1177244A (en) | 1996-09-17 | 1996-09-17 | Secret, counter-wiretap, double direction telephone automatically monitoring recording circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1177244A true CN1177244A (en) | 1998-03-25 |
Family
ID=5125013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96118344 Pending CN1177244A (en) | 1996-09-17 | 1996-09-17 | Secret, counter-wiretap, double direction telephone automatically monitoring recording circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1177244A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102170500A (en) * | 2011-03-23 | 2011-08-31 | 朱虹 | Remote monitoring device of fixed telephone |
| CN104363355A (en) * | 2014-11-25 | 2015-02-18 | 黄宇嵩 | Fixed-line telephone frequency modulation and wireless transmission device |
| CN104871559A (en) * | 2012-11-02 | 2015-08-26 | 伯斯有限公司 | Binaural telepresence |
| CN115209309A (en) * | 2022-05-30 | 2022-10-18 | 长沙朗源电子科技有限公司 | Anti-eavesdropping device and telephone conference equipment |
-
1996
- 1996-09-17 CN CN 96118344 patent/CN1177244A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102170500A (en) * | 2011-03-23 | 2011-08-31 | 朱虹 | Remote monitoring device of fixed telephone |
| CN102170500B (en) * | 2011-03-23 | 2014-01-15 | 黄月华 | Remote monitoring device of fixed telephone |
| CN104871559A (en) * | 2012-11-02 | 2015-08-26 | 伯斯有限公司 | Binaural telepresence |
| CN104871559B (en) * | 2012-11-02 | 2017-03-01 | 伯斯有限公司 | Ears are distant existing |
| US9628914B2 (en) | 2012-11-02 | 2017-04-18 | Bose Corporation | Binaural telepresence |
| CN104363355A (en) * | 2014-11-25 | 2015-02-18 | 黄宇嵩 | Fixed-line telephone frequency modulation and wireless transmission device |
| CN115209309A (en) * | 2022-05-30 | 2022-10-18 | 长沙朗源电子科技有限公司 | Anti-eavesdropping device and telephone conference equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |