CN104090140A - Double-relay control circuit for one-phase meter - Google Patents
Double-relay control circuit for one-phase meter Download PDFInfo
- Publication number
- CN104090140A CN104090140A CN201410300921.XA CN201410300921A CN104090140A CN 104090140 A CN104090140 A CN 104090140A CN 201410300921 A CN201410300921 A CN 201410300921A CN 104090140 A CN104090140 A CN 104090140A
- Authority
- CN
- China
- Prior art keywords
- relay
- circuit
- control
- double
- power
- Prior art date
- 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.)
- Pending
Links
Abstract
The invention provides a double-relay control circuit for a one-phase meter. The double-relay control circuit for the one-phase meter comprises a double-relay circuit, a relay control two-circuit body, a relay power circuit and a CPU circuit. The double-relay circuit is composed of a phase line relay and a null line relay. The relay control two-circuit body is composed of two independent relay control loops used for controlling the phase line relay and the null line relay to be connected and disconnected respectively. The relay power circuit is used for providing a working power supply for the relay control two-circuit body. The CPU circuit is used for controlling the relay power circuit to be switched off and switched on, sending a relay control signal to the relay control two-circuit body and thus controlling two relays to be connected and disconnected. By the adoption of the double-relay control circuit, excessive power consumption caused by simultaneous motion of the two relays is reduced, the problems that normal display cannot be achieved during low voltage power supply, and the power voltage of the system can be pulled down when the two relays move under the rated voltage are solved, hence, an electric power company can safely and effectively manage user electricity utilization through the two relays, the electricity stealing and private electricity utilization difficulty is also increased, production quality is improved, and the performance of the meter is improved.
Description
Technical field
The present invention relates to a kind of on-load switch single-phase meter control field, particularly a kind of double relay control circuit for single-phase meter.
Background technology
Family is generally used built-in on-load switch single-phase meter at present, and Utilities Electric Co. controls user power utilization by long-range or local operation management, normally adopts following two kinds of modes:
Adopt the break-make of single Control single-phase meter phase line, it is very convenient when this mode is used, but to stealing and prevent user privately the problem such as electricity consumption there is larger leak, because zero line also has electrical connection, so personal safety is also existed to certain threat in the time operating a switch;
Adopt two relays to control respectively the phase line of single-phase meter and the break-make of zero line, this mode is controlled the break-make of phase line and zero line simultaneously, increase stealing and the user difficulty of electricity consumption privately, because electric power system and subscriber equipment are by electrical isolation, therefore ensured the personal safety while operating a switch, but also there is defect in this method, because double relay power consumption in the time operating a switch or close a floodgate is very large, control double relay is operated a switch and is needed power supply to have very strong load capacity, otherwise drag down possibly the voltage of electric power system, cause system CPU to reset, exist in very large hidden danger, the electrochemical capacitor that uses high power capacity as the power supply of relay for actuating of relay stored energy can head it off, but due to limited space in electric energy meter, institute is in this way also unworkable.
Summary of the invention
In view of this, the technical problem to be solved in the present invention be to provide a kind of cannot normally show can solve low voltage power supply time with rated voltage under drag down the double relay control circuit for single-phase meter of the problem of system power supply voltage when double relay action.
For solving the problems of the technologies described above, technical scheme provided by the invention is: a kind of double relay control circuit for single-phase meter, comprising:
Relay circuit, comprises the phase line of controlling respectively single-phase meter, phase line relay and the zero line relay of zero line break-make;
Control two-circuit, comprises that two-way independently controls respectively the control loop of phase line relay and zero line relay on-off;
Relay power circuit, for Control two-circuit provides working power;
Cpu circuit, Control two-circuit is arrived in closing with unlatching, sending filter control signal of pilot relay power circuit, and then controls the break-make of double relay.
Each road relay control circuit includes two PNP triodes and two NPN triodes; The emitter of two PNP triodes is connected in 12V power supply simultaneously, and collector is connected with two NPN transistor collectors respectively, and base stage, respectively by drawing after a current-limiting resistance, is held and reset terminal as arranging of the connection relay input end for cpu circuit control; Described two NPN transistor emitters ground connection simultaneously, base stage is connected in cpu circuit as the relay switching control end for cpu circuit control by a resistance respectively.
The collector of four triodes joins between two respectively and end to be set and reset terminal is connected with described.
Be connected with respectively diode D1, D2 from end is set to the emitter of two triodes direct-connected with it, the emitter from reset terminal to two triodes direct-connected with it is connected with respectively diode D3, D4.
Described relay power circuit comprises triode Q1 and field effect transistor Q3, described triode Q1 grounded emitter, collector is connected in the grid of field effect transistor Q3 by a resistance R 2, base stage connects cpu circuit, cut-off and the conducting of described cpu circuit control triode Q1, and then the break-make of control field effect transistor Q3, realize the break-make control of relay power.
Described relay circuit adopts magnetic latching relay.
Compared with prior art, tool of the present invention has the following advantages:
The invention provides a kind of double relay control circuit for single-phase meter, utilize the break-make of cpu circuit pilot relay power circuit and in succession sending filter control signal to Control two-circuit, controlling double relay timesharing ground moves, reduce by two relays and moved the too much power consumption of bringing simultaneously, while having solved low voltage power supply, cannot normally show with rated voltage under double relay when action drag down the problem of system power supply voltage, thereby Utilities Electric Co. also can pass through the electricity consumption of double relay leading subscriber safely and effectively, also stealing and the difficulty of electricity consumption have privately been increased, improve product quality, the perfect performance of ammeter.
Brief description of the drawings
Fig. 1 is the structured flowchart of double relay control circuit of the present invention;
Fig. 2 is the structured flowchart of the control method of electric energy meter of the present invention while powering on;
Fig. 3 is the control method block diagram of double relay electric energy meter of the present invention;
Fig. 4 is a wherein relay control circuit circuit diagram of Control of the present invention two-circuit 23;
Fig. 5 is another relay control circuit circuit diagram of Control of the present invention two-circuit 23;
Fig. 6 is relay power circuit 24 circuit diagrams of the present invention.
Embodiment
For the ease of it will be appreciated by those skilled in the art that below in conjunction with accompanying drawing and embodiment, the present invention is explained in further detail.
As shown in Figure 1, a kind of double relay control circuit for single-phase meter, comprise successively cpu circuit 25, relay power circuit 24, Control two-circuit 23 and double relay circuit 22, described double relay circuit 22 comprises phase line relay and zero line relay, described Control two-circuit by two independently relay control circuit 13 form.
As shown in Figure 4, a wherein relay control circuit of described relay control circuit 13 comprises two PNP triode Q1, Q2 and two NPN triode Q3, Q4; The emitter of two PNP triode Q1, Q2 is connected in 12V direct supply simultaneously, collector is connected with two NPN triode Q3, Q4 collectors respectively, base stage is respectively by drawing after a current-limiting resistance R1, R2, hold SET and reset terminal RESET, i.e. relay drive coil two ends as arranging of the connection relay input end of controlling for cpu circuit 25.Described two NPN triode Q3, Q4 emitter ground connection simultaneously, base stage is connected in cpu circuit 25 as the relay switching control end of controlling for cpu circuit 25 by a resistance R 3, R4 respectively.
The collector of four triode Q1, Q2, Q3, Q4 joins between two respectively and end SET to be set and reset terminal RESET is connected with described.
From being set, end SET is connected with diode D1 to PNP triode direct-connected with it, the positive pole that end SET connects diode D1 is wherein set, from being set, end SET is connected with diode D2 to NPN triode direct-connected with it, the negative pole that end SET connects diode D1 is wherein set, be connected with diode D3 from reset terminal RESET to PNP triode direct-connected with it, wherein reset terminal RESET connects the positive pole of diode D3, be connected with diode D4 from reset terminal RESET to NPN triode direct-connected with it, wherein reset terminal RESET connects the positive pole of diode D4, wherein D1, D2, D3, D4 plays holding circuit.
As shown in Figure 5, another relay control circuit of described relay control circuit 13 comprises two PNP triode Q5, Q6 and two NPN triode Q7, Q8; The emitter of two PNP triode Q5, Q6 is connected in 12V power supply simultaneously, collector is connected with two NPN triode Q7, Q8 collectors respectively, base stage is respectively by drawing after a current-limiting resistance R5, R6, and SETN and reset terminal RESETN are held in arranging of controlling as confession cpu circuit 25; Described two NPN triode Q7, Q8 emitter ground connection simultaneously, base stage is connected in cpu circuit 25 as the relay switching control end of controlling for cpu circuit 25 by a resistance R 7, R8 respectively.
Similarly, the collector of four triode Q5, Q6, Q7, Q8 joins between two respectively and end SETN to be set and reset terminal RESETN is connected with described.
Similarly, from being set, end SETN is connected with diode D5 to PNP triode direct-connected with it, the positive pole that end SETN connects diode D5 is wherein set, from being set, end SETN is connected with diode D6 to NPN triode direct-connected with it, the negative pole that end SETN connects diode D6 is wherein set, be connected with diode D7 from reset terminal RESETN to PNP triode direct-connected with it, wherein reset terminal RESETN connects the positive pole of diode D7, be connected with diode D8 from reset terminal RESETN to NPN triode direct-connected with it, wherein reset terminal RESETN connects the positive pole of diode D8, wherein diode D5, D6, D7, D8 plays holding circuit.
Wherein OFF-RELAY, the ON-RELAY in Control two-circuit, OFF-RELAYN, ON-RELAYN signal are directly connected in cpu circuit 25, and its port is the signal wire of controlling double relay 22 switching ons.
In Fig. 4 circuit, in the time that cpu circuit 25 does not transmit control signal, end SET and reset terminal RESET are set all in noble potential, in the time that the OFF-RELAY of cpu circuit 25 end sends high level, be electronegative potential by end SET is set after triode Q4 with respect to original state, now reset terminal RESET is still noble potential, thereby produces voltage difference, now relay closes at relay two ends; In the time that the ON-RELAY of cpu circuit 25 end sends high level, be electronegative potential by reset terminal RESET after triode Q3 with respect to original state, it is still noble potential that end SET is now set, thus produce reverse voltage at relay two ends poor, and now relay disconnects.Shown in Fig. 5, another relay control circuit principle is same as shown in Figure 4, is not repeated herein.
As shown in Figure 6, relay power circuit 24 comprises triode Q1 and field effect transistor Q3, the collector of described triode Q1 is connected in the grid of field effect transistor Q3 by a resistance R 2, described cpu circuit 25 is controlled cut-off and the conducting of triode Q1, thereby controls the break-make of field effect transistor Q3 source electrode and drain electrode.
The present invention adopts Control two-circuit 23 to control double relay timesharing action, and adds the power consumption that the supplementary two individual control loops of relay power circuit 24 increase, and the control method of its time-sharing work is as follows:
Before the actuating of relay, cpu circuit 25 is first opened the power switch of control relay circuit, and in the time not needing the actuating of relay, the power supply of closed relay control circuit, like this can be lower than the complete machine voltage circuit power consumption of single loop control.
In the time that double relay need to move, first described cpu circuit 25 is sent to Control two-circuit 23 by phase line relay control signal, thereby controls the on-off of phase line relay;
After certain hour time delay, (for example time delay 2 seconds), is sent to Control two-circuit 23 by zero line relay control signal again, controls the on-off of zero line relay;
Finally, described cpu circuit 25 is controlled and is turn-offed relay power circuit 24, cuts off the working power of two relays.
This mode of utilizing CPU to control two relay timesharing actions, is divided into the large power consumption of a moment low power consumption of two different times, effectively reduces ammeter moment power demand, ensures the steady operation of ammeter.
As shown in Figure 2, in the time that needs are controlled double relay circuit 22 and are powered on, arrange one and be greater than the insurance magnitude of voltage that causes CPU to enter the boundary voltage of power-down state, cpu circuit 25 is by judging whether electric energy meter voltage value judges whether that lower than insurance magnitude of voltage pilot relay powers on.Adopt this electrification control method; the problem that cannot normally show while having solved well electric energy meter low voltage power supply; in the time that electrical energy meter electricity forces down in insurance magnitude of voltage; controlling electric energy meter is failure to actuate; thereby relay does not move in the time of low-voltage, can not consume the power of electric energy meter, just can not cause electric energy meter to enter power-down state; and then reach protection overall performance, ensure the object of machine product quality.
In the present invention, the not concrete functional module of introducing all can adopt ripe functional module of the prior art, such as cpu circuit, double relay circuit etc., and wherein cpu circuit program thereby is common programs, for example delay procedure and threshold settings control program.
Be more than wherein specific implementation of the present invention, it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these apparent replacement forms all belong to protection scope of the present invention.
Claims (6)
1. for a double relay control circuit for single-phase meter, it is characterized in that, comprising:
Double relay circuit, comprises the phase line of controlling respectively single-phase meter, phase line relay and the zero line relay of zero line break-make;
Control two-circuit, comprises that two-way independently controls respectively the relay control circuit of phase line relay and zero line relay on-off;
Relay power circuit, for Control two-circuit provides working power;
Cpu circuit, Control two-circuit is arrived in closing with unlatching, sending filter control signal of pilot relay power circuit, and then controls the break-make of double relay.
2. the double relay control circuit for single-phase meter according to claim 1, is characterized in that: each road relay control circuit includes two PNP triodes and two NPN triodes; The emitter of two PNP triodes is connected in 12V power supply simultaneously, and collector is connected with two NPN transistor collectors respectively, and base stage, respectively by drawing after a current-limiting resistance, is held and reset terminal as arranging of the connection relay input end for cpu circuit control; Described two NPN transistor emitters ground connection simultaneously, base stage is connected in cpu circuit as the relay switching control end for cpu circuit control by a resistance respectively.
3. the double relay control circuit for single-phase meter according to claim 2, is characterized in that: the collector of four triodes joins between two respectively and end to be set and reset terminal is connected with described.
4. the double relay control circuit for single-phase meter according to claim 2, it is characterized in that: be connected with respectively diode D1, D2 from end is set to the emitter of two triodes direct-connected with it, the emitter from reset terminal to two triodes direct-connected with it is connected with respectively diode D3, D4.
5. the double relay control circuit for single-phase meter according to claim 2, it is characterized in that: described relay power circuit comprises triode Q1 and field effect transistor Q3, described triode Q1 grounded emitter, collector is connected in the grid of field effect transistor Q3 by a resistance R 2, base stage connects cpu circuit, cut-off and the conducting of described cpu circuit control triode Q1, and then the break-make of control field effect transistor Q3, realize the break-make control of relay power.
6. the double relay control circuit for single-phase meter according to claim 1, is characterized in that: described relay circuit adopts magnetic latching relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410300921.XA CN104090140A (en) | 2014-06-30 | 2014-06-30 | Double-relay control circuit for one-phase meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410300921.XA CN104090140A (en) | 2014-06-30 | 2014-06-30 | Double-relay control circuit for one-phase meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104090140A true CN104090140A (en) | 2014-10-08 |
Family
ID=51637871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410300921.XA Pending CN104090140A (en) | 2014-06-30 | 2014-06-30 | Double-relay control circuit for one-phase meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104090140A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114325085A (en) * | 2021-12-30 | 2022-04-12 | 江苏林洋能源股份有限公司 | Electric energy meter and method supporting dynamic energy consumption management |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200950638Y (en) * | 2006-09-26 | 2007-09-19 | 青岛海信电器股份有限公司 | Standing low-power consumption circuit and television set having the same |
| CN202275100U (en) * | 2011-10-28 | 2012-06-13 | 武汉阿迪克电子有限公司 | Magnetic latching relay drive circuit of intelligent watt-hour meter |
| CN102592665A (en) * | 2011-10-24 | 2012-07-18 | 北京时代全芯科技有限公司 | High-speed data writing structure and writing method for phase change memory |
| CN102664126A (en) * | 2012-05-17 | 2012-09-12 | 许继集团有限公司 | Driving circuit of magnetic latching relay |
| CN202796752U (en) * | 2012-01-09 | 2013-03-13 | 温州市麦特力克电器有限公司 | Magnetic latching relay control circuit for intelligent switch |
| CN202916609U (en) * | 2012-10-30 | 2013-05-01 | 佛山市顺德区瑞德电子实业有限公司 | Dual relay drive circuit |
| WO2013077032A1 (en) * | 2011-11-21 | 2013-05-30 | 東光東芝メーターシステムズ株式会社 | Latching relay control circuit and power meter |
| CN203133163U (en) * | 2012-12-26 | 2013-08-14 | 广东浩迪创新科技有限公司 | Bidirectional-metering intelligent electric energy meter |
| CN203192085U (en) * | 2013-04-24 | 2013-09-11 | 广东浩迪创新科技有限公司 | Prepayment electric energy meter |
| CN203617218U (en) * | 2013-12-30 | 2014-05-28 | 广东瑞德智能科技股份有限公司 | Circuit for driving two delays through single I/O port |
| CN203965495U (en) * | 2014-06-30 | 2014-11-26 | 惠州中城电子科技有限公司 | A kind of double relay control circuit for single-phase meter |
-
2014
- 2014-06-30 CN CN201410300921.XA patent/CN104090140A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200950638Y (en) * | 2006-09-26 | 2007-09-19 | 青岛海信电器股份有限公司 | Standing low-power consumption circuit and television set having the same |
| CN102592665A (en) * | 2011-10-24 | 2012-07-18 | 北京时代全芯科技有限公司 | High-speed data writing structure and writing method for phase change memory |
| CN202275100U (en) * | 2011-10-28 | 2012-06-13 | 武汉阿迪克电子有限公司 | Magnetic latching relay drive circuit of intelligent watt-hour meter |
| WO2013077032A1 (en) * | 2011-11-21 | 2013-05-30 | 東光東芝メーターシステムズ株式会社 | Latching relay control circuit and power meter |
| CN202796752U (en) * | 2012-01-09 | 2013-03-13 | 温州市麦特力克电器有限公司 | Magnetic latching relay control circuit for intelligent switch |
| CN102664126A (en) * | 2012-05-17 | 2012-09-12 | 许继集团有限公司 | Driving circuit of magnetic latching relay |
| CN202916609U (en) * | 2012-10-30 | 2013-05-01 | 佛山市顺德区瑞德电子实业有限公司 | Dual relay drive circuit |
| CN203133163U (en) * | 2012-12-26 | 2013-08-14 | 广东浩迪创新科技有限公司 | Bidirectional-metering intelligent electric energy meter |
| CN203192085U (en) * | 2013-04-24 | 2013-09-11 | 广东浩迪创新科技有限公司 | Prepayment electric energy meter |
| CN203617218U (en) * | 2013-12-30 | 2014-05-28 | 广东瑞德智能科技股份有限公司 | Circuit for driving two delays through single I/O port |
| CN203965495U (en) * | 2014-06-30 | 2014-11-26 | 惠州中城电子科技有限公司 | A kind of double relay control circuit for single-phase meter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114325085A (en) * | 2021-12-30 | 2022-04-12 | 江苏林洋能源股份有限公司 | Electric energy meter and method supporting dynamic energy consumption management |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202711660U (en) | LED display system and LED display unit box body thereof | |
| CN204316829U (en) | A kind of more-control switch of remote manual control compatibility | |
| CN203215919U (en) | Low-power-consumption standby circuit device and air conditioner | |
| CN204376520U (en) | A kind of multiple feed selection circuit | |
| CN202917401U (en) | Bi-stable state permanent magnetic switch drive circuit | |
| CN105406845A (en) | P-channel metal oxide semiconductor (PMOS) switch-off control circuit and power supply device | |
| CN104122803A (en) | Solar-energy standby power supplying device | |
| CN203251265U (en) | Motor switching circuit and motor driving device | |
| CN203965495U (en) | A kind of double relay control circuit for single-phase meter | |
| CN202678155U (en) | A lock-up control circuit between a motor power supply and a control power supply of a knife switch mechanism | |
| CN104090140A (en) | Double-relay control circuit for one-phase meter | |
| CN207623767U (en) | An a kind of key switch machine system | |
| CN202978276U (en) | Secondary power-off device for prolonging working time of main load | |
| CN203261305U (en) | Novel electronic type alternating-current contactor | |
| CN201699423U (en) | Three-phase power voltage stabilizer with three-phase simultaneous output function and three-single-phase independent output function | |
| CN204361781U (en) | There is the protection switch of automatic reclosing function | |
| CN107204651A (en) | The energy-saving circuit and method of work, charger of rear power themselves down are full of in charger | |
| CN204347491U (en) | Main frame and peripheral hardware switching sequence control device | |
| CN104318895B (en) | A kind of display device controls circuit | |
| CN203774865U (en) | A dual power switching circuit for fan power supply and a high-voltage inverter | |
| CN206546801U (en) | Control drive circuit built in intelligent electric meter | |
| CN207766148U (en) | A kind of electric power management circuit of passive microcomputer protective relay device | |
| CN207637713U (en) | A kind of power control circuit suitable for electric locomotive contactor | |
| CN206250835U (en) | Voltage transformer power-supply device and its power supply prepared auto restart control device | |
| CN204613629U (en) | A kind of power relay control circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141008 |