CN2338899Y - Automatic switch device with prevention of fraudulent use of electricity - Google Patents

Abstract

The utility model discloses an automatic switch device with prevention of fraudulent use of electricity, belonging to the electronic automatic control technique of prevention of fraudulent use of electricity. The utility model is composed of a signal examining and picking circuit, an electric bridge circuit, a time delay control circuit, a power supply circuit, etc., wherein, a mutual inductor of the signal examining and picking circuit is connected with a triode of the electric bridge circuit. A relay of the electric bridge circuit is connected with a relay of the time delay control circuit. A DC power supply is provided to the electric bridge circuit, the time delay control circuit, etc. by the power supply circuit. A contact of the relay of the electronic bridge circuit is connected with the signal examining and picking circuit. The signal examining and picking circuit and the power supply circuit are both conducted by an AC power supply. The utility model has the advantages of high automation and strong electricity theft preventing performance.

Description

Anti-electricity-theft recloser

The anti-electricity-theft recloser of the utility model belongs to anti-electricity-theft electronic auto-control technology, relates in particular to the anti-electricity-theft recloser of a kind of family expenses.

The not only anti-electricity-theft means of the anti-electricity-theft device of current use lag behind, complex structure, automaticity is not high, misoperation rate height, easy break-down, and can only cut off the electricity supply automatically, can not automatically reset and send, can not carry out thief-proofly when anti-electricity-theft like this in remote and eminence, influence the theft-proof of anti-electricity-theft device, these have not met anti-electricity-theft device Developing Trend in Technology and user's requirement and hope.

The anti-electricity-theft recloser of the utility model provides a kind of anti-electricity-theft automatics of new structure, this anti-electricity-theft automatics has not only overcome the defective of existing like product or technology existence, and make the utility model reach simple in structure, scientific and reasonable, anti-electricity-theft highly sensitive, action is accurate, timely, and power consumption is few, the user saves worry reliably, the purpose that theft-proof strengthens.

In order to realize the goal of the invention of utility model, its technical scheme is as follows: anti-electricity-theft recloser is made of inspection machine circuit, signal pick up circuit, electronics bridge circuit, delay control circuit, sound light alarming circuit and power supply circuits etc., and the inspection machine circuit is by K switch ₁, resistance R ₁Form, signal pick up circuit is by instrument transformer T and capacitor C ₁Form, the electronics bridge circuit is by triode BG ₁, BG ₂, capacitor C ₂, C ₃, electrochemical capacitor C _n, relay J ₁, diode D ₅, resistance R ₃, photo resistance R ₄Form, delay control circuit is by fet BG ₃, resistance R ₅, R ₇, adjustable resistance R ₆, electrochemical capacitor C ₄, relay J ₂Form, power supply circuits are by voltage stabilizing didoe D _W, resistance R ₈, R ₉, electrochemical capacitor C ₅, bridge rectifier, capacitor C ₆Form, sound light alarming circuit is by resistance R ₂, indicator light XD, language sheet Ic form, wherein instrument transformer T is by two primary coil L ₁, L ₂And secondary coil L ₃Form, bridge rectifier is by four diode D ₁, D ₂, D ₃, D ₄Form.Inspection machine circuit K switch ₁Coil L with signal pick up circuit ₂Link to each other resistance R ₁With coil L ₁Link to each other the instrument transformer T of signal pick up circuit and the triode BG of electronics bridge circuit ₁, BG ₂Communicate triode BG ₂With relay J ₁By electrochemical capacitor C _nCommunicate relay J ₁With the delay control circuit relay J ₂Communicate relay J ₂With fet BG ₃Emitter links to each other, delay control circuit electrochemical capacitor C ₄, fet BG ₃With power supply circuits voltage stabilizing didoe D _W, resistance R ₉Communicate relay J ₂With the power supply circuits capacitor C ₅, C ₆, resistance R ₈Communicate the indicator light XD of sound light alarming circuit, language sheet I _CParallel connection, and and relay J ₁Normally closed contact join relay J ₁Normal opened contact communicate with the instrument transformer of signal pick up circuit, signal pick up circuit instrument transformer T and AC power are conducted, AC power is by bridge rectifier and capacitor C ₆, resistance R ₈Also join with power supply circuits.

The anti-electricity-theft recloser of the utility model is compared with existing like product or technology has following characteristics: scientific and reasonable for structure, and the automaticity height, highly sensitive, action accurately and timely, easy break-down not can automatic sound-light alarm, power consumption is few, and function setting is complete, and anti-electricity-theft performance is strong.

Accompanying drawing is anti-electricity-theft recloser structural representation.

Below in conjunction with the embodiment accompanying drawing the anti-electricity-theft recloser of this patent application technology is done a detailed explanation.Anti-electricity-theft recloser is made of several parts such as inspection machine circuit, signal pick up circuit, electronics bridge circuit, delay control circuit, sound light alarming circuit, power supply circuits.AC power is through the capacitor C of power supply circuits ₆, resistance R ₈With the step-down of 220V alternating current is 14V, again through bridge rectifier rectification, capacitor C ₅Filtering, voltage stabilizing didoe D _WAfter the voltage stabilizing, supply with the direct voltage of electronics bridge circuit and delay control circuit, a shared like this DC power supply.

When nobody's stealing, signal pick up circuit primary coil L ₁, L ₂In do not have stealing stream, primary coil L ₃Two ends do not have induced potential, electronics bridge circuit triode BG ₁End triode BG ₂Also end, because dc voltage value is higher, so relay J ₁Adhesive, relay J ₁J ₁-1, J ₁Connect-2 normal battle, and the 220V alternating voltage then passes through J ₁-1, J ₁The contact of two closures of-2 is to power supply unit (household electrical appliance) normal power supply, this moment J ₁-1, J ₁Two normally closed contacts of-2 disconnect, and at this moment the indicator light XD of sound light alarming circuit does not work.

In the time of people's stealing, flow through the primary coil L of signal pick up circuit ₁, L ₂In electric current do not wait, promptly produced a difference between current, at this moment at secondary coil L ₃Also just there has been induced potential at two ends, and this induced potential is given the electronics bridge circuit as signal, promote triode BG ₁, BG ₂Conducting, relay J ₁Discharge relay J ₁-3 contacts are by being disconnected to closure, relay J ₂Resume work, make relay J ₂J ₂-1 contact is by being closed to disconnection, and delay control circuit is started working, relay J ₁J ₁-1, J ₁-2 normal opened contact 2,4 disconnects, and normally closed contact 1,3 closures have so just been cut off AC power automatically, and power supply unit or household electrical appliance are quit work, simultaneously sound light alarming circuit and relay J ₁J ₁-1, J ₁-2 normally closed contact 1,3 communicates, and at this moment sound light alarming circuit begins sound and light alarm, to remind the user people's stealing is arranged.After having removed stealing, the instrument transformer T no current of signal pick up circuit is poor, and promptly signal pick up circuit does not have the stealing signal, if the delay time of delay control circuit is then, and electronics bridge circuit triode BG ₁, BG ₂End relay J ₂Discharge relay J ₂J ₂-1 junction closure makes relay J ₁Start working, at this moment relay J ₁J ₁-3 contacts disconnect, and delay control circuit quits work, relay J ₁J ₁-1, J ₁-2 normal opened contacts 2,4 closures, normally closed contact 1,3 disconnects, and sound light alarming circuit stops to report to the police, and at this moment, AC power automatically resets to the power supply unit normal power supply, if the delay time of delay control circuit does not arrive relay J ₂Work, relay J ₁J ₁-3 junction closures, delay control circuit operate as normal, and the triode BG of electronics bridge circuit ₁, BG ₂Still be in conducting state, relay J ₁Still be in the release situation.

The delay time adjustable resistance R of delay control circuit ₆, relay J ₁J ₁-3 junction closures and relay J ₂Resume work and all play the time control action.Because the anti-electricity-theft recloser of the utility model can cut off the electricity supply automatically, again can automatic time delay safety reset and send electricity, make this anti-electricity-theft recloser can be installed in remote or eminence, so just strengthened the anti-electricity-theft performance of this device.Whether inspection machine circuit user can take place before and after the stealing this device to be carried out artificial inspection, normal to confirm this anti-electricity-theft recloser operation.The magnetic core of instrument transformer T in the signal pick up circuit adopts toroidal core, primary coil L ₁And L ₂Adopt special enamelled wire, two-wire and around, coil L ₁, L ₂The number of turn, direction, tightness must be the same, wind the back and use epoxy sealing, so just guaranteed the highly sensitive of signal pick up circuit, the secondary coil L of instrument transformer ₃And capacitor C ₁Parallel resonance is on ac power frequency 50HZ, and the composition anti-jamming circuit, so not only can obtain maximum signal code (stealing stream), and can improve the signal pick up circuit antijamming capability.

In addition, the anti-electricity-theft recloser of the utility model not only can be used for anti-electricity-theft aspect, gets an electric shock or the electric leakage aspect but also can be used for the person.

Claims (2)

1, the anti-electricity-theft recloser of the utility model contains inspection machine circuit, signal pick up circuit, electronics bridge circuit, power supply circuits, it is characterized in that also containing delay control circuit and sound light alarming circuit, and the inspection machine circuit is by K switch ₁, resistance R ₁Form, signal pick up circuit is by instrument transformer T and capacitor C ₁Form, the electronics bridge circuit is by triode BG ₁, BG ₂, capacitor C ₂, C ₃, electrochemical capacitor C _n, relay J ₁, diode D ₅, resistance R ₃, photo resistance R ₄Form, delay control circuit is by fet BG ₃, resistance R ₅, R ₇, adjustable resistance R ₆, electrochemical capacitor C ₄, relay J ₂Form, power supply circuits are by voltage stabilizing didoe D _W, resistance R ₈, R ₉, electrochemical capacitor C ₅, bridge rectifier, capacitor C ₆Form, sound light alarming circuit is by resistance R ₂, indicator light XD, language sheet I _CForm, wherein instrument transformer T is by two primary coil L ₁, L ₂And secondary coil L ₃Form, bridge rectifier is by four diode D ₁, D ₂, D ₃, D ₄Form inspection machine circuit K switch ₁Coil L with signal pick up circuit ₂Link to each other resistance R ₁With coil L ₁Link to each other the instrument transformer T of signal pick up circuit and the triode BG of electronics bridge circuit ₁, BG ₂Communicate triode BG ₂With relay J ₁By electrochemical capacitor C _nCommunicate relay J ₁With the delay control circuit relay J ₂Communicate relay J ₂With fet BG ₃Emitter links to each other, delay control circuit electrochemical capacitor C ₄, fet BG ₃With power supply circuits voltage stabilizing didoe D _W, resistance R ₉Communicate relay J ₂With the power supply circuits capacitor C ₅, C ₆, resistance R ₈Communicate the indicator light XD of sound light alarming circuit, language sheet I _CParallel connection, and and relay J ₁Normally closed contact join relay J ₁Normal opened contact communicate with the instrument transformer of signal pick up circuit, the signal pick up circuit instrument transformer communicates with AC power, AC power is by bridge rectifier and capacitor C ₆, resistance R ₈Also join with power supply circuits.

2, anti-electricity-theft recloser as claimed in claim 1 is characterized in that the magnetic core of the instrument transformer in the signal pick up circuit adopts toroidal core, primary coil L ₁And L ₂Adopt special enamelled wire, two-wire and around, coil L ₁, L ₂The number of turn, direction, tightness the same, use epoxy sealing, the secondary coil L of instrument transformer T ₃With capacitor C ₁Formed anti-jamming circuit.

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