CN2348440Y - Long-distance power transmission equipment anti-theft protection alarm - Google Patents

Abstract

The utility model relates to an anti-theft protection alarm of long-distance power transmission equipment. The anti-theft protection alarm of long-distance power transmission equipment is characterized in that a transformer B whose primary resistance is ignored is connected in series on an AC power transmission line; the primary L < 2 > of the B is connected with a rectifier D < 1-4 >; the negative electrode of the D < 1-4 > is connected with the negative electrode of a C < 1 >, and then is connected to base plates of transistors (BG < 1 >, BG < 3 >) via potentiometers W < 1 >, W < 2 >. Reverse bias is used for controlling an oscillation tube BG < 1 > to cut off, and a circuit stops to oscillate. Once power consumption equipment for power transmission is stolen, the BG < 1 > is out of control, the circuit generates oscillation, and then a horn sends out alarming sounds. Once the power consumption equipment RL generates over current because of various reasons, a control tube BG < 3 > generates reverse-biased to cut off, a BG < 4 > is out of control to switch on, a relay is started, a JK < 4 > breaks off an AC power supply of the RL, and then the RL is protected. The utility model has the advantages of more functions, simple structure, and low cost.

Description

Long distance power transmission consumer anti-theft protection warning device

The utility model belongs to a kind of anti-theft protection warning device, is specially adapted to the burglar alarm of remote consumer and line of electric force, and is applicable to consumer superpressure overload overcurrent protection warning.

Along with progress of science and technology development, many remote mountain areas have all led to electricity, and all on high mountain top, built up wireless station, satellite television is received changes station and other consumer.Stolen and spontaneous fault of consumer of various transmission of electricity consumers or superpressure overcurrent burnout phenomenon happen occasionally, and cause damage for local people's productive life.

The utility model provides a kind of remote burglar alarm and superpressure overload overcurrent protection warning device for unattended transmission of electricity consumer exactly

The technical solution of the utility model is: a mutual inductor and reometer that primary impedance is ignored of polyphone on the power transmission line of consumer, utilize the induced potential of transformer induced generation, behind rectifying and wave-filtering, be adjusted into two groups of DC voltage that high electronegative potential does not wait through potentiometer again, the noble potential DC voltage oppositely is added on the base stage of oscillating tube in the alarm audio oscillator circuit in anti-mode in positively biased bigger than normal, control oscillating tube failure of oscillation, oscillatory circuit is not worked, and promptly alarm is not reported to the police.In case the transmission of electricity consumer is when stolen, the alarm oscillatory circuit is out of control and starting of oscillation is sent chimes of doom by loudspeaker, judges stolen classification according to the indication of reometer simultaneously, thereby realizes the purpose of transmission of electricity consumer burglar alarm.Low-potential direct voltage oppositely is added on the base stage of protector control tube in anti-mode in positively biased less than normal; require not change the former positively biased conducting state of control tube; in case during consumer superpressure overload overcurrent; control tube becomes partially anti-by positively biased and ends; lose control to protector; protector is out of control and start; cut off the AC power of consumer; make consumer be protected unlikely burning out; simultaneously alarm is out of control too and send chimes of doom; lumination of light emitting diode in the protector; produce in the time of with acousto-optic and occur as guard signal; inform that belonging to the consumer power-off protection that breaks down needs in time to get rid of hidden danger, realizes the purpose of consumer superpressure overload short circuit overcurrent power-off protection.In addition, utilize power transmission line zero line and the earth and diode, resistance, accumulator, reometer, switch polyphone to constitute whole current return, indication detects the stolen cardinal principle location of power transmission line according to reometer.Concrete scheme is as follows:

A kind of long distance power transmission consumer anti-theft protection warning device is made of mutual inductor rectification circuit for regulating and controlling, alarm audio oscillator circuit, protector electronic switch control circuit, supervision testing circuit and power of alterating and direct current.It is characterized in that mutual inductor rectification circuit for regulating and controlling is made up of mutual inductor, rectifier filer, stabilivolt, diode, potentiometer; The alarm audio oscillator circuit is made up of transistor, resistance, electric capacity, loudspeaker; The protector electronic switch control circuit is made up of relay, transistor, diode, light emitting diode, resistance, electric capacity; The supervision testing circuit is made up of light emitting diode, reometer, accumulator, switch, diode, resistance; Power of alterating and direct current is by rectifier E ₂With accumulator E ₁Form.It is characterized in that primary winding of mutual inductor L ₁, A ₁, K _2a, J _K4Be serially connected in again behind the polyphone on the AC power line zero line of consumer RL; Mutual inductor secondary coil L ₂With rectifier D _1-4Link to each other; D _1-4Negative pole, filter capacitor C ₁Negative pole and diode D ₆Negative pole and adjustable resistance W ₁One end links to each other; D ₆Positive pole and stabilivolt D ₅Negative pole links to each other; W ₁The other end and potentiometer W ₂Point of adjustment links to each other; W ₂Two ends respectively with diode (D ₁₂, D ₁₃) negative pole links to each other; D ₁₂Anodal, (R ₁, R ₂) end and oscillating tube BG ₁Base stage and switch K _2dLink to each other; R ₂The other end and C ₃One end links to each other; BG ₁Collector and BG ₂Base stage links to each other; C ₃The other end and BG ₂Collector links to each other with loudspeaker r one end; D ₁₃Positive pole and R ₃One end and control tube BG ₃Base stage links to each other; BG ₃Pattern electrode and (R ₄, R ₅) end links to each other; R ₅The other end and C ₄Positive pole and switching tube BG ₄Base stage links to each other; BG ₄Collector, diode D ₁₄Positive pole and J _K1Often open break and J _LOne end links to each other; R ₆One end and light emitting diode D ₁₅Positive pole links to each other with relay movable contact 2; (R ₁, R ₃, R ₄) other end, BG ₂Emitter, D ₁₄Negative pole and J _LThe other end and K _1c-dAfter linking to each other, middle contact connects direct supply (E ₁Or E ₂) positive pole; D _1-4Anodal, C ₁Positive pole, the r other end, (BG ₁, BG ₃, BG ₄) emitter C ₄Negative pole, R ₆The other end, D ₁₅Negative pole and K _2bWith direct supply (E ₁And E ₂) negative pole links to each other.K switch ₃Monitoring that detection place links to each other with ground wire; K ₃The other end and reometer A ₂One end links to each other; A ₂The other end and accumulator E ₃Anodal linking to each other; E ₃Negative pole and K _2c-dIn the supply lines of contact and RL link to each other in that alarm detection is indoor; Switch K _2cShelves link to each other with 220 volts of AC power zero lines; D ₁₆With R ₇, D ₁₇With R ₈Behind the polyphone, be connected to again between the power transmission line and ground wire in the easy stolen A of power transmission line, B location respectively

The utility model has the advantages that: two function multi-usages can be used for power line anti-theft alarm; Remote consumer burglar alarm; Consumer superpressure overload, spontaneous fault overcurrent all can be reported to the police, and cut off the electricity supply automatically and make consumer therefore not suffer bigger loss, can also detect ANOMALOUS VARIATIONS plot and the stolen cardinal principle location of power transmission line (being line of electric force) that the transmission of electricity consumer takes place simultaneously.In addition the utility model also have simple in structure, stable and reliable for performance, advantage such as cost is low.

Accompanying drawing 1 is the utility model circuit structure diagram

Below in conjunction with accompanying drawing the utility model is described further:

The utility model comprises the anti-theft warning circuit when power transmission line has electricity and do not have electricity.

When power transmission line was switched on, the working power of this circuit just was 220 volts of alternating currents on the power transmission line, and alternating current is by transformer B ₁After the step-down, through D _7-10Rectification C ₂After the filtering, export the working power E of 12 volts of DC voltage as alarm audio oscillator circuit and protector electronic switch control circuit ₂When transmission of electricity consumer operate as normal, 220 volts of alternating currents are by primary winding of mutual inductor L ₁, secondary coil L ₂Just induction produces about 8 volts induced potential.Through D _1-4Rectification C ₁After the filtering, pass through potentiometer W again ₁And W ₂Be adjusted into two groups of DC voltage that high electronegative potential does not wait.Alarm circuit is an audio oscillator circuit, and the noble potential DC voltage oppositely is added in audio oscillation pipe BG in anti-mode in positively biased bigger than normal ₁Base stage on, make oscillating tube BG ₁Be in anti-cut-off state partially, cause the audio oscillator circuit failure of oscillation, be i.e. the alarm alarm free sound that quits work; The protector circuit is an electronic switch control circuit, and low-potential direct voltage oppositely is added in electronic switch control tube BG in anti-mode in positively biased less than normal ₃Base stage on, require BG ₂Reverse bias must make control tube BG less than the positive bias value ₃It is constant to keep former conducting state under approaching anti-inclined to one side situation, the unlikely control tube BG that influences ₃To electronic switching tube BG ₄Control action, keep BG ₄Be in cut-off state, allow relay keep former static release conditions constant, allow relay normally closed contact J _K4Keep the closed AC power that continues to connect consumer RL of nature, when consumer RL part stolen or complete when stolen, reometer A ₁Indication correspondingly reduce or equal zero.Be connected in the primary winding of mutual inductor L on the transmission line of electricity ₁In electric current also reduce or equal zero secondary coil L ₂The corresponding reduction of induced potential or equal zero, correspondingly cause oscillating tube BG ₁Reverse bias also reduce or equal zero, make oscillating tube BG ₁Make audio oscillator circuit starting of oscillation work by anti-partially by becoming positively biased conducting work, alarm sends a kind of frequency response chimes of doom.When power transmission line is stolen, reometer A ₁No current indication → primary winding of mutual inductor L ₁No current passes through → secondary coil L ₂There is not the voltage → oscillating tube BG that inducts ₁No reverse bias control and conducting starting of oscillation → audio oscillator circuit starting of oscillation work → alarm sends a kind of frequency response chimes of doom.Moment mutual inductor L when consumer superpressure overload short circuit overcurrent ₁In electric current increase L ₂In induced potential increase protector electronic switch control tube BG ₃Reverse bias raise immediately, make control tube BG ₃By conducting become by and lose switching tube BG ₄Control, relay switch pipe BG ₄Become conducting, relay coil J by ending _LBecome energising startup work by outage, in the relay of the moving point of the two groups of band, a movable contact 2 is by adhesive, normal opened contact J _K1Closed through R ₆And D ₁₅Direct engage relay J _LWorking power, make the stable work lumination of light emitting diode of switching on constantly of relay.Another movable contact 1 is attracted action, makes normally closed contact J _K4Disconnect and the AC power of cut-out consumer RL, make consumer RL be protected unlikely burning out.Transmission line of electricity is because relay normally closed contact J simultaneously _K4Disconnection and cut off alternating circuit, cause no current in the transmission line of electricity, mutual inductor L ₂There is not the voltage of inducting, oscillating tube BG ₁Lose reverse bias and the conducting starting of oscillation, alarm work sends the higher chimes of doom of a kind of frequency response.Luminous according to light emitting diode, decidable are consumer RL superpressure or overload overcurrent and power-off protection and report to the police, should in time fix a breakdown.

According to reometer A ₁The indication the size or have or not light emitting diode D ₁₅Whether luminous, can judge transmission of electricity consumer stolen classification, can judge the consumer of transmitting electricity stolen still be break down protected.

When the transmission of electricity consumer does not have alternating current to supply with, switch K ₁To K _1aAnd K _1cShelves utilize 12 volts of electric power storage ground E ₁To alarm power supply, switch K ₂To K _2bAnd K _2dShelves, the AC power line of cut-out consumer is connected BG ₁Base stage and emitter and transmission of electricity consumer circuit constitute the loop, as warning line, with BG ₁The bias voltage shorted to earth, control alarm audio oscillator circuit quits work, loudspeaker alarm free sound, stolen or consumer is stolen fully when power transmission line, the loop disconnects, i.e. alarm audio oscillation pipe BG ₁Operation circuit on the base stage is cut off, and causes the audio oscillator circuit starting of oscillation, and loudspeaker r sends chimes of doom

How far nearly in order to detect the stolen place of power transmission line from the place that alarm is installed, can be at the easily stolen front end everywhere of power transmission line, as A, the difference series diode D of B place ₁₆And resistance R ₇, D ₁₇Go into the earth with the buried ground wire of R8, at the also buried ground wire in place that alarm is installed, with K switch ₃, accumulator E ₃, reometer A ₂Be composed in series a detecting device, detecting device one termination power transmission line, other end ground wire, K at ordinary times ₃Disconnect switch K ₂To K _2bAnd K _2dShelves are with the supply lines disconnection of detecting device front end, by last button switch K ₃, electric current is anodal through A from power supply E3 ₂→ K ₃→ go into the earth → R ₇, R ₈→ D ₁₆, D ₁₇Lead → power supply E before → A, the B place ₃Negative pole constitutes whole loop, and this moment, ammeter pointer indication data can reflect the cardinal principle location that power transmission line is stolen, brought convenience to arresting criminal, reduced and chased the time, simultaneously also can be according to reometer A ₁Designation data distinguishes that power transmission line is stolen or consumer is stolen.

Claims (2)

1, a kind of long distance power transmission consumer anti-theft protection warning device is specially adapted to the burglar alarm of power transmission line and consumer, is applicable to that also consumer superpressure overload overcurrent reports to the police and power-off protection.This anti-theft protection warning device is by mutual inductor rectification circuit for regulating and controlling; the alarm audio oscillator circuit; the protector electronic switch control circuit; monitor that testing circuit and power of alterating and direct current constitute; it is characterized in that mutual inductor rectification circuit for regulating and controlling is by mutual inductor; rectifier filer; stabilivolt; diode; potentiometer is formed; the alarm audio oscillator circuit is by transistor; resistance; electric capacity; loudspeaker are formed; the protector electronic switch control circuit is by relay; transistor; diode; light emitting diode; resistance; electric capacity is formed; monitor that testing circuit is by light emitting diode; reometer; accumulator; switch; diode; resistance is formed, and power of alterating and direct current is by rectifier E ₂With accumulator E ₁Form

2, anti-theft protection warning device according to claim 1 is characterized in that primary winding of mutual inductor L ₁, A ₁, K _2a, J _K4Be serially connected on the AC power line zero line of consumer RL mutual inductor secondary coil L behind the polyphone again ₂With rectifier D _1-4Link to each other; D _1-4Negative pole, filter capacitor C ₁Negative pole and diode D ₆Negative pole and adjustable resistance W ₁One end links to each other; D ₆Positive pole and stabilivolt D ₅Negative pole links to each other; W ₁The other end and potentiometer W ₂Point of adjustment links to each other; W ₂Two ends respectively with diode (D ₁₂, D ₁₃) negative pole links to each other; D ₁₂Anodal, (R ₁, R ₂) end and oscillating tube BG ₁Base stage and switch K _2dShelves link to each other; R ₂The other end and C ₃One end links to each other; BG ₁Collector and BG ₂Base stage links to each other; C ₃The other end and BG ₂Collector links to each other D with loudspeaker r one end ₁₃Positive pole and R ₃One end and control tube BG ₃Base stage links to each other, BG ₃Collector and (R ₄, R ₅) end links to each other; R ₅The other end and C ₄Positive pole and switching tube BG ₄Base stage links to each other, BG ₄Collector, diode D ₁₄Positive pole and J _K1Often open break and J _LOne end links to each other; R ₆One end and light emitting diode D ₁₅Positive pole links to each other with relay movable contact 2; (R ₁, R ₃, R ₄) other end, BG ₂Emitter, D ₁₄Negative pole and J _LThe other end and K _2cdAfter linking to each other, middle contact connects direct supply (E ₁Or E ₂) positive pole, D _1-4Anodal, C ₁Positive pole, the r other end, (BG ₁, BG ₃, BG ₄) emitter, C ₄Negative pole, R ₆The other end, D ₁₅Negative pole and K _2bWith direct supply (E ₁And E ₂) negative pole links to each other; K switch 3 one ends link to each other with ground wire in supervision detection place of reporting to the police; K ₃The other end and reometer A ₂One end links to each other; A ₂The other end and accumulator E ₃Anodal linking to each other; E ₃Negative pole and K _2c-dMiddle contact and R _LSupply lines report to the police to monitor that detection place links to each other; Switch K _2cShelves link to each other with 220 volts of AC power zero lines; D ₁₆With R ₇, D ₁₇With R ₈Behind the polyphone, be connected to again between the power transmission line and ground wire in the easy stolen A of power transmission line, B location respectively