CN1048274A - Power line carrier joint defense warning device - Google Patents

Abstract

A kind of power line carrier joint defense warning device, by coding, frequency modulation, CF signal coupling, triggering timing wait the radiating portion of circuit composition and constitute with the receiving unit that circuit such as demodulation, frequency-selective filtering, decoding matrix, coding demonstration are formed.When certain user's warning device was triggered, other all users were after power lead is received signal, and all decoding and displaying goes out this user's coding, and sends audible alarm.

The utility model utilizes AC power cord to carry out the signal transmission, and easy for installation, it adopts audio coding and frequency modulation technology, and antijamming capability is strong.And internal battery, but automatic power during power failure.The utility model is with low cost, is applicable to that dwelling house, factory, shop and office set up the net of helping each other of reporting to the police.

Description

Power line carrier joint defense warning device

The invention provides a kind of power line carrier joint defense warning device, it be applicable to family, shop, factory, warehouse office and army as antitheft, anti-riot, and emergency episode report to the police when requiring assistance and use.

About the retrieval and the understanding of newpapers and periodicals, data and market information, existing alarm technique mainly contains following two classes: centralized control type and independent action type in recent years.The centralized control type is to adopt to set up special line or utilize radiowave or with the technological means of power line carrier, warning message is delivered to alarm center, so that the operator on duty takes measures.As two turnover controls of: the SE902S type induction type of Hong Kong CK company and alarm monitoring system, characteristics are that to need special personnel to carry out on duty, and handle alert, and quantities is big, so be not suitable for common home dwelling.The independent action type is to adopt the sound to frighten criminal, as: " multichannel is touched and is changed alarm " of publication in " electronics newspaper " on Dec 7th, 86; " multifunction alarm device " that " CYBERSPACE " 88 years the 9th periodicals are stepped on; " the multifunction electronic alarming music door-bell " that "China Electronics News" published on November 29th, 1987; " DFB type domestic antitheft alarm " on " household electrical appliance science and technology " first phase in 1987, such characteristics are low prices, function is simple, can not solve anti-riot, with rescue.

Purpose of the present invention, be to develop a kind of special circuit that do not need to set up, be convenient to form whole people's joint defence warning network, making in alarm center and the net all users all understand which unit resident family or shop, factory, warehouse etc. goes out to get over, want help, the whole people are antitheft jointly, anti-to be robbed and emergency episode to transfer, mutually warning device-the power line carrier joint defense warning device of assistance.Its principle is that each user is encoded, and when alert took place, emergent hidden switch or various terminal were triggered, and radiating portion will have this subscriber-coded FM signal and send through line of electric force.Except that this user that reports to the police kept silent, after all users and alarm center were received signal, all demodulation and decoding and displaying went out the numbering at this warning family, sent sound equipment simultaneously, pointed out this user to need emergency aid in the warning network.

Solution of the present invention is to adopt audio pll ic coding and decoding and modulation, demodulation, differentiates to show, and adopts power line carrier transmission alerting signal, realizes that multi-user's joint defence reports to the police.

It below is particular content of the present invention.Fig. 1, Fig. 3 are respectively emission, receiving unit logic diagram.101 are the coding pierce circuit among Fig. 1, and 102 is carrier oscillation, the coding FM circuit, 103 is resonant power amplifying circuit, and 104 is the carrier signal coupled circuit, and 105 for triggering timing circuit, 106 is power rectifier, filtering and mu balanced circuit, and 107 for reserve battery supplies, charging circuit.201 is input coupling circuit among Fig. 3,202 is oscillator amplifier circuit, and 203 is demodulator circuit, and 204 is demodulator circuit, 204 is power save circuit, 205 is the frequency-selecting filter circuit, and 206 is decoder matrix circuit, and 207 is display circuit, 208 is power rectifier, filtering and mu balanced circuit, 209 for reserve battery supplies, the charging road, and 210 is the sound equipment pierce circuit.

Fig. 2 is the circuit diagram of the utility model radiating portion, and its course of work is as follows: the transformer B of 220V alternating current in 106₂After the step-down, from the alternating voltage of secondary output 8V, through D₅～D₈Bridge rectifier, and by C₁₁Obtain after the filtering+10V voltage, again by integrated three-terminal voltage-stabilizing IC circuit₄(7806) voltage stabilizing is exported stably the 6V direct current and is sent into and triggertiming circuit 105, during normality, and integrated circuit (IC)₅(NE555) 3. pin output low level, 101 and 102 no operating voltage, transmitter is not worked.When K switch is triggered, IC₅Timer work 3. pin saltus step is+the lasting about 1 minute CT=1.1R of 6V₁₄C₁₅Supply with 101 and 102, make transmitter work, thecoding oscillator 101 of transmitter is by IC₁, C₁, R₁, W₁And IC₂C₂, R₃, W₂Form two audio frequency oscillators corresponding to coding respectively, frequency is respectively f₁=11C₁(R₁+ W₁), f₂=11C₂(R₂+ W₂), R₃C₃And R₄, C₄Be respectively the shaping circuit of two oscillators output, so that waveform levels off to sine wave.After the output of two oscillators mixes, through D₁D₂Amplitude limit is by C₅Be coupled to 102, the frequency modulation of encoding.When the user not for a long time, as long as carry out the single-tone frequency modulation of encoding, save IC with single audio frequency oscillator₂, C₂, R₂, W₂, the oscillatory circuit of composition.In 102 by IC₃Form carrier oscillator, centre carrier frequency f₀=11C₇(R₈+ W₃) this airborne wave frequency gets 150KHZ～450KHZ, IC is received in 101output₃2. pin, utilize the amplitude versus frequency characte of this pin to carry out frequency modulation.102 frequency-modulated carrier signal is byIC₃5. pin is delivered to 103 triode BG1 and is carried out resonance power and amplify, and output is by B, secondaryly is coupled to 104, through L₁, C₉, L₂, C₁₀Be coupled on the 220V alternating current streamline, and transfer out.The confession of 107 reserve batteries, charging circuit are by battery E₁, charging diode D₃, current-limiting resistance R₁₁, reach discharge diode D when having a power failure₄Form, in order to the usefulness of power failure.

Fig. 4 and Fig. 5 warning device be the circuit of receiving unit, the course of work is as follows: the C of the high-frequency signal on the 220V power lead in 201₁₆, C₁₇, L₃, L₄Be coupled to 202 and carry out the resonance amplification.Oscillator amplifier circuit is by BG₂, R₁₆R₁₇And B₄, C₁₉, C₂₀And L₅, C₂₄Constitute.D₁₅When importing, plays strong signal protection triode BG₂Effect.Signal after the amplification is through R₁₉C₂₅Be coupled to D₁₆, D₁₇Amplitude limit is after C₂₆Deliver to 203 and carry out the demodulation of FM signal.Detuner 203 is by IC₇, R₂₁, W₄, C₂₈, C₂₇, C₂₉Constitute centre frequency, fo=11C₂₈(R₂₁+ W₄), pullin banwidth is by C₂₉Decision, C₂₉Increase, pullin banwidth narrows down, C₂₉Reduce, bandwidth increases, and the coded signal that demodulates is through C₃₀Be coupled to 205 of Fig. 5 and carry out frequency-selective filtering, 205 form several frequency-selecting filters by several integrated package LM567 (gets n=6 A, B, C, D, E, F in the legend, down together), each corresponding to the centre frequency, the centre frequency F=11RC(R that determine by coding be 5., the 6. all-in resistance between pin, C is 6. pin ground capacitance) pullin banwidth is by 2. pin ground capacitance decision, the big narrow bandwidth of electric capacity, the little bandwidth of electric capacity is big.Output A, the B of 6 wave filters, C, D, E, F deliver to 206 decoding matrix and decode, and decoding matrix is made of N NOR gate, N=(n(n-1))/2, N=in this legend (6 * 5)/2=15 promptly can have 15 group codings at most.Decoded output is by the demonstration of encoding of 207 light emitting diode.The example: be encoded to " A, D " then 205 output A, D be electronegative potential " 0 ", B, C, E, F are noble potential " 1 ", behind 206 decoding matrix, for the numbering " 3 " luminotron bright.When 206 decoding matrix had output, " M " point was for noble potential, made switching tube BG in the 210 sound equipment oscillators₄Saturation conduction, acoustics circuit IC₁₈Alarm sound is sent in work.Few as the user, when using the single-tone coding, can save decoder matrix circuit 206,204 power save circuits by BG₃Constitute, when 203 do not receive selected carrier signal,IC₇8. pin is exported noble potential, BG₃End, cut off 205,206,207 power supply supply, complete machine has only the about 10mA of 202,203 power consumptions, when 203 receive selected carrier signal, and BG₃Saturation conduction, 205,206,207 add working power.In 208 rectifications, the filter regulator circuit, by B₃Secondary output 8V alternating voltage, D₁₁, D₁₂, D₁₃, D₁₄Rectification C₁₈, C₂₂Filtering, IC₆Be circuit of three-terminal voltage-stabilizing integrated, output+6V steady voltage, LED are the power supply indication.209 reserve batteries are for charging circuit, by reserve battery E₂, diode D₉, D₁₀, resistance R₁₅Constitute.

The present invention has following advantage compared with the prior art:

1, because each unit users all has reception, decoding and displaying circuit, make interior each unit users of warning network and alarm center all can understand the warning message of the whole network, be convenient to start broad masses in time with theft, the violent crime molecule is struggled, also provide a large amount of clues such as the testimony of a witness for solving a case of public security organ after the crime, also just because of such circuit has been arranged, this warning device also can use when neighbours require assistance in emergency episode.

2, the present invention uses the power line carrier technical transmission, does not need to draw special circuit, and is easy for installation.

3, the present invention adopts audio coding, the carrier modulation technology, and strong anti-interference performance is difficult for wrong report.

4, the present invention can be easily be used in combination simultaneously the means as coding and transmitting and displaying with various alarm probe such as infrared, microwave.

Transmission range of the present invention is within the interval of a power transformer.Not on the homophase circuit time, capacitors available is carried out the carrier wave coupling between phase line as some user.About 100 yuan altogether of the costs of its radiating portion and receiving unit, the units such as dwelling house, residential district, factory, shop, office that are applicable to easy for installation.

Implementation consideration:

1, carrier frequency range of choice: 100KHZ～450KHZ, if there are two above carrier waves to work simultaneously, its frequency interval should be greater than 20KHZ.

2, Bian Ma audio frequency frequency should be avoided the 50HZ times age in the length of service, and the interval between each frequency should be greater thanadjacent frequency 4～5%.

3, Figure 24 5 can make the circuit diagram of the embodiment of the invention, and component parameters can see Table 1～10.

Claims (6)

1, a kind ofly it is characterized in that adopting audio pll ic encoding and decoding and modulation to differentiate showing, and adopt power line carrier transmission alerting signal to realize that multi-user's joint defence reports to the police by transmitting and receiving warning device dimerous.Transmitter is by audio pll ic IC₁, IC₂(LM567) form coding pierce circuit 101, audio pll ic IC₃(LM567) constitute carrier oscillation coding FM circuit 102, deliver to transistor BG through the alerting signal after the coded modulation₁(3DG12) transformer B₁Harmonic motion rate amplifying circuit 103 Deng forming passes through inductance L after the amplification₁, L₂, capacitor C 9, C10 form coupled circuit 104 and be coupled to power line transmission, after receiver is received alerting signal, passes through capacitor C₁₆, C₁₇Inductance L₃, L₄The coupled circuit of forming 201 is again by transistor BG₂(3DG6) inductance B₄L₅Deng forming oscillator amplifier circuit 202, deliver to audio pll ic IC₇(LM567) etc. the demodulator circuit of forming 203 carries out demodulation, sends into audio pll ic IC then_8～13(LM567) constitute multiple-unit selective frequency filter circuit 205 and carry out frequency-selective filtering, deliver to by integrated circuit (IC) at last_14～17(SN7402) and D18～32 the decoder matrix circuit of forming 206 is decoded, and by LED in the display circuit 207_2～16Show.

2, according to the described power line carrier joint defense warning device of claim (1), its feature has one to trigger regularly, circuit 105, and it is by time-base integrated circuit IC₅(LM555) and capacitor C₁₅, C₁₄, C₁₂, C₁₃, resistance R₁₂, R₁₃, R₁₄Form.

3,, it is characterized in that having a power save circuit 204, by transistor BG according to the described power line carrier joint defence of claim (1) alarm device₃(the resistance R of 3C * 201A)₂₀Form.

4, according to the described power line carrier joint defense warning device of claim (1), its feature transmission circuit all has a reserve battery confession, charging circuit 107 and 209 by crystal diode D₃, D₄, D₉, D₁₀(1N4001) and resistance R₁₁R₁₅Form.

5, according to the described power line carrier joint defense warning device of claim (1), it is characterized in that having a sound equipment pierce circuit 210, it is by audio manifold block IC₁₈With transistor BG₄(3DG₆), capacitor C₄₉, resistance R₄₃, R₄₄Form.

6, according to the described power line carrier joint defense warning device of claim (1), it is characterized in that two kinds of diphthong coding frequency modulation and single-tone coding frequency modulation, the user does not adopt single-tone coding frequency modulation for a long time.

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