CN2148966Y - Safety magnetic card electric energy meter - Google Patents
Safety magnetic card electric energy meter Download PDFInfo
- Publication number
- CN2148966Y CN2148966Y CN 91213191 CN91213191U CN2148966Y CN 2148966 Y CN2148966 Y CN 2148966Y CN 91213191 CN91213191 CN 91213191 CN 91213191 U CN91213191 U CN 91213191U CN 2148966 Y CN2148966 Y CN 2148966Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- magnetic card
- energy meter
- electric energy
- electric
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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.)
- Expired - Lifetime
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- Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
Abstract
The utility model discloses a safety magnetic card electric energy meter which is provided with a magnetic card recognition circuit and safety protective circuit for electric leakage and electric shock on an existing electric energy meter. After a purpose-made magnetic card which is registered with an electric power consumption value is inserted, the magnetic card recognition circuit can test the magnetic card; after a truth signal tested is amplified, a controllable silicon is commanded whether the power source of a user is cut off or not; therefore, the electric power consumption of the user is controlled; the problem that the worker of a power supply department goes to the home of the user, reads the meter and collects the expense chronically is solved. In addition, because the safety magnetic card electric energy meter is provided with the safety protective circuit for electric leakage and electric shock, the personal safety of users can be ensured, and the damage for electric appliances is avoided.
Description
The utility model relates to a kind of electric energy meter that utilizes magnetic card control electric weight, belongs to electric-power metering control technology field.
Present employed electric energy meter has only shown the number of degrees of electricity consumer electricity consumption.Electric industry department collects to electricity consumer that the electricity charge are performed such, and copies from door to door earlier and gets the shown electric degree number of electric energy meter, and then collect the electricity charge to the user.This method not only expends a large amount of human and material resources, and the owing electricity charges phenomenon often occurs, goes down for a long time, is unfavorable for very much the development of China's electric utility.In addition, existing electric energy meter does not possess creepage protection function yet, and safety utilization of electric power is not ensured.
The purpose of this utility model provides a kind of safe magnetic card electric energy meter, after the user loads onto, needs to insert the magnetic card that note has certain electric degree number, and electric energy meter is connected, and the user can electricity consumption.In case the electric degree number on the magnetic card is used up, then electric energy meter is closed automatically, stops power supply, and the user need buy new magnetic card and drop in the electric energy meter, can use.In addition, also be provided with earth leakage protective device on the electric energy meter.
The purpose of this utility model is achieved in that
Magnetic card is put into electric energy meter by throwing bayonet socket, the thick film circuit of being made up of magnetodiode has the magnetic card of certain electric degree number to discern to note, contact on the magnetic card distributes corresponding one by one with the magnetodiode of thick film circuit, the electric degree number that magnetic card write down is to distribute to determine by the contact on the magnetic card, by magnetodiode the detection in magnetic card magnetic field is obtained different signals, send into logic analysis circuit (NAND gate circuit) input end, analyze through the logic analysis circuit, after the amplification, correct in this way magnetic card, no signal output, not conducting of controllable silicon, electromagnetic switch is failure to actuate, normally electricity consumption.In case because the electric degree number that the numeral corresponding with electric degree number on the magnetic card is provided with on the magnetic card of contact on the electric energy meter dial uses up, switch is promptly touched in the contact, the anti-magnetized coil energising, to the magnetic card demagnetization, magnetic card by demagnetization after, the signal that thick film circuit is obtained will change, logical circuit will be exported a trigger pip, the controllable silicon conducting, the electromagnetic switch action is cut off the electricity supply, and has only and inserts new magnetic card, the electric energy meter switch just can close, and continues to use.
Anticreep is the loop balance whether that detects house lead in phase line and other line by zero-sequence transformer, if any electric leakage or the generation of electric shock phenomenon, the loop imbalance of two lines, on zero-sequence transformer, produce a signal, after amplifier amplifies, trigger controllable silicon, thereby cut off the electricity supply, guarantee safety.
Technical characterstic of the present utility model and good effect:
1, this electric energy meter service recorder has the magnetic card of electric degree number to control the break-make of electric energy meter, need payment earlier to buy magnetic card during user power utilization, can electricity consumption, thus electricity management department counting cost by gas meter problem from door to door for a long time solved, stopped the phenomenon of user's owing electricity charges simultaneously.
2, can prevent line electrical leakage and damage or the damage of electrical appliance to the person.
3, simple in structure, easily manufactured, need only on existing electric energy meter, install a kind of magnetic card identification circuit additional and safety protective circuit just can be realized, so be convenient to promote the use of.
Below in conjunction with accompanying drawing the utility model is further described.
Accompanying drawing is a schematic diagram of the present utility model
IC1 is the thick film circuit that 2ACM forms among the figure, and IC2 is the logic analysis circuit, and R3 is a biasing resistance; Transformer B; Commutation diode D1-D4, R2C1 forms filtering circuit; Capacitor C 2, resistance R 4, stabilivolt D5, controllable silicon VT forms trigger circuit; Zero-sequence transformer ZCT, amplifier FD form safety protective circuit; Button K1, resistance R 1 are formed the trial jump circuit; Anti-magnetized coil L.
As shown in the figure; the utility model is to have installed thick film circuit IC1 on existing electric energy meter additional; logic analysis IC circuit 2; biasing resistance R3; transformer B, commutation diode D1-D4, filtering circuit R2C1, trigger circuit (C2, R4, D5, VT); safety protective circuit (ZCT, FD), trial jump circuit (K1, R1) and anti-magnetized coil.Its circuit is to link like this: 1 pin of thick film circuit IC1 connects positive source by biasing resistance R3,2 pin connect power cathode, 3～19 pin connect 1～13 pin of logic analysis IC circuit 2 respectively, 14 pin of logic analysis IC circuit 2 connect positive source, 16 pin connect power cathode, 15 pin connect the silicon controlled control utmost point, capacitor C 2, resistance R 4, stabilivolt D5 is connected in parallel on respectively between the controllable silicon VT control utmost point and the ground, zero-sequence transformer ZCT is installed on the power lead, one end ground connection, the input end of one termination amplifier FD, the amplifier FD output termination controllable silicon VT control utmost point, two ends connect power positive cathode respectively in addition, and anti-magnetized coil L is connected on power transformer m1 by electric energy meter contact switch S, the m2 end.The power supply of magnetic card identification circuit is obtained after transformation, rectification, filtering by the house lead in power supply, and transformer B is connected on two lines of house lead in power supply, and the e of rectification circuit D1-D4 holds ground connection, and f, h end meets two taps of transformer B, g terminating resistor R2 respectively.Between tap that capacitor C 1 one terminating resistor R2, termination rectification circuit e end solenoid winding L2 are connected on transformer is held with the f of rectification circuit D1-D4.
Claims (1)
- A kind of safe magnetic card electric energy meter is characterized in that it is by electric energy meter, is located at the thick film circuit (IC in the electric energy meter 1), logic analysis circuit (IC 2), filtering circuit, trigger circuit, safety protective circuit, trial jump circuit, anti-magnetized coil, biasing resistance (R 3) and the magnetic card composition; A plurality of magnetodiodes in the thick film circuit are corresponding with the contact on the magnetic card respectively, the output terminal of magnetodiode connects the Sheffer stroke gate input end of logic analysis circuit respectively, the output termination silicon controlled control utmost point of logic analysis circuit, the electric capacity (C in the trigger circuit 2), resistance (R 4); voltage stabilizing diode (DS) is connected in parallel on respectively between the silicon controlled control utmost point and the ground; zero-sequence transformer in the safety protective circuit (ZCT) is installed on the power lead; one end ground connection; the input end of another termination amplifier (FD), the output terminal of amplifier (FD) are connected on the silicon controlled control utmost point, and two ends connect the both positive and negative polarity of power supply respectively in addition; anti-magnetized coil by electric energy meter contact switch (S) be connected on transformer (m1, m2) on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91213191 CN2148966Y (en) | 1991-02-08 | 1991-02-08 | Safety magnetic card electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91213191 CN2148966Y (en) | 1991-02-08 | 1991-02-08 | Safety magnetic card electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2148966Y true CN2148966Y (en) | 1993-12-08 |
Family
ID=33760051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91213191 Expired - Lifetime CN2148966Y (en) | 1991-02-08 | 1991-02-08 | Safety magnetic card electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2148966Y (en) |
-
1991
- 1991-02-08 CN CN 91213191 patent/CN2148966Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |