CN104655895A - Micro-current inquiry power supply energy-saving protection system for watt-hour meter - Google Patents
Micro-current inquiry power supply energy-saving protection system for watt-hour meter Download PDFInfo
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- CN104655895A CN104655895A CN201410714345.3A CN201410714345A CN104655895A CN 104655895 A CN104655895 A CN 104655895A CN 201410714345 A CN201410714345 A CN 201410714345A CN 104655895 A CN104655895 A CN 104655895A
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Abstract
The invention discloses a micro-current inquiry power supply energy-saving protection system for a watt-hour meter, and relates to the field of power. The micro-current inquiry power supply energy-saving protection system for the watt-hour meter comprises a power supply identification system; the power supply identification system comprises a relay or a thyristor, an electric signal frequency generating mechanism, an electric signal frequency receiving mechanism which is matched with the electric signal frequency generating mechanism, and a signal processing system, wherein the relay or the thyristor is connected with a positive electrode power supply connecting end; the electric signal frequency generating mechanism is connected with the positive electrode power supply connecting end of the watt-hour meter; the electric signal frequency receiving mechanism is connected with the negative electrode power supply connecting end of the watt-hour meter; the signal input end of the signal processing system is connected with the electric signal frequency receiving mechanism; a control signal output end of the signal processing system is connected with the relay or the thyristor. According to the micro-current inquiry power supply energy-saving protection system for the watt-hour meter, when the signal received by the electric signal frequency receiving mechanism does not meet a frequency requirement or a signal cannot be received, the signal processing system cuts off a power supply circuit.
Description
Technical field
The present invention relates to power domain, be specifically related to electric control system.
Background technology
Watt-hour meter rear is often connected with a large amount of plain conductors, provides a large amount of free electrons, cause electric energy loss at these plain conductors.Therefore we can see, even if family electrical equipment Close All, watt-hour meter is still walked about.The energy consumption that these plain conductors visible cause, very huge.
When original watt-hour meter is powered, cannot be respectively for equipment power, or electric leakage, or has people to get an electric shock.Therefore cannot initiatively resistance electric leakage and generation of getting an electric shock.If electric system can initiative recognition, and stop electric leakage and get an electric shock, hundreds of millions of economic losses can be avoided.
Summary of the invention
The object of the invention is to, provide a kind of watt-hour meter micro-electric current inquiry power supply energy-saving guard system, to solve the problem.
Technical matters solved by the invention can realize by the following technical solutions:
Watt-hour meter micro-electric current inquiry power supply energy-saving guard system, it is characterized in that, comprise a power supply recognition system, described power supply recognition system comprises a relay or thyristor, the cathode power supply incoming end of described relay or thyristor access watt-hour meter;
Described power supply recognition system also comprises the supporting signal frequency receiving mechanism of a signal frequency generating mechanism and one and described signal frequency generating mechanism, the cathode power supply incoming end of described signal frequency generating mechanism access watt-hour meter, the negative power supply incoming end of described signal frequency receiving mechanism access watt-hour meter;
Described power supply recognition system also comprises a signal processing system, and the signal input part of described signal processing system connects described signal frequency receiving mechanism, and a control signal output terminal of described signal processing system connects described relay or thyristor.
The present invention signal frequency receiving mechanism receive meet the signal of frequency requirement time, described signal processing system controls described relay or thyristor is in conducting state, thus makes described supply line be in conducting state.When the signal that signal frequency receiving mechanism receives does not meet frequency requirement or does not receive signal, described signal processing system controls described relay or thyristor is in off-state, thus cut off the cathode power supply incoming end of watt-hour meter, make described supply line be in off-state.
Described signal processing system thinks that the consistent signal of signal frequency sent with described signal frequency generating mechanism is the signal meeting frequency requirement.For consumer power time, the cathode power supply incoming end of watt-hour meter and the negative power supply incoming end of watt-hour meter are connected, described signal frequency receiving mechanism receives the signal that described signal frequency generating mechanism sends, described signal processing system controls described relay or thyristor is in conducting state, thus makes described supply line be in conducting state.
When there is electric leakage or get an electric shock, described signal frequency receiving mechanism does not receive the signal that described signal frequency generating mechanism sends, described signal frequency generating mechanism controls described relay or thyristor is in not on-state, thus makes described supply line be in off-state.
The occurrence frequency of described signal frequency generating mechanism is less than 5 hertz.To reduce costs.Described power supply recognition system is by a transformer access civil power.To realize electrical isolation.
Watt-hour meter micro-electric current inquiry power supply energy-saving guard system also comprises a keyswitch, and described keyswitch connects described signal processing system.The control hierarchy of keyswitch, higher than the control hierarchy of signal frequency receiving mechanism, under the prerequisite that can receive electric signal at described signal frequency receiving mechanism, realizes the cut-out of signal frequency receiving mechanism.
Watt-hour meter micro-electric current inquiry power supply energy-saving guard system, also comprise a load current regulating system, described load current regulating system comprises a control module, described control module is provided with a control signal output terminal, described control module connects a voltage-adjusting unit by control signal output terminal, and the signal output part of described voltage-adjusting unit connects a Current Control signal processing module;
Described supply line is provided with a constant current output circuit, described Current Control signal processing module receives the conditioning signal of described voltage-adjusting unit, and after analyzing and processing is carried out to conditioning signal, export to constant current output circuit, realize the adjustment of described constant current output circuit output current.
Described Current Control signal processing module connects described signal processing system, and described signal processing system communicates to connect a host computer by described signal frequency generating mechanism.To provide the basis of uploading data.
Described control module is also provided with a control signal input end, and described control signal input end connects described signal processing system;
A Current adjustment static database matched containing the output valve of constant current output circuit and the control signal of voltage-adjusting unit is provided with in described host computer, described host computer judges the output valve needing the constant current output circuit regulated, search the control signal matched, by described signal processing system, described control signal is passed to described control module, export to described voltage-adjusting unit by described control module again, realize the adjustment to constant current output circuit output current.
Also be provided with a dynamic data base in described host computer, described host computer input signal to external world carries out record, and stored in dynamic data base, dynamic data base is in use expanded, and forms the dynamic data base that has Self-learning Model; Described host computer judges the output valve needing the constant current output circuit regulated, the value that the output valve of constant current output circuit obtained according to unceasing study in dynamic data base and the control signal of voltage-adjusting unit match exports control signal, by described signal processing system, described control signal is passed to described control module, export to described voltage-adjusting unit by described control module again, realize the adjustment to constant current output circuit output current.
Described Current Control signal processing module can adopt the signal processing modes such as short circuit output, filtering, signal limiter, signal conversion to the processing mode of conditioning signal.To realize eliminating interference, signal shaping.Here conditioning signal can be the electrical signal form such as voltage, electric current, PWM, frequency.
Described voltage-adjusting unit receives the control signal that described control module exports, regulate AH (mxm. of conditioning signal) end hold with AW (conditioning signal) between and AW (conditioning signal) holds and AL (minimum of conditioning signal) hold between equivalent resistance, realization outputs to the control of the conditioning signal of described Current Control signal processing module.Here conditioning signal can be the electrical signal form such as voltage, electric current, PWM, frequency.
It is the circuit or the chip that are equivalent to resistance that the AH of described voltage-adjusting unit holds between AW end and between AW end and AL end, and regulates equivalent resistance value according to the output signal of described control module.
Also comprise a reference voltage module, ORV+ (output voltage maximal value) end of described reference voltage module, ORV-(output voltage minimum value) end connect AH end, the AL end of described voltage-adjusting unit respectively, so that the output signal controlling described voltage regulator module is in the scope of setting.According to the requirement generation reference voltage of the conditioning signal that described Current Control signal processing module exports.
The AH end of described voltage-adjusting unit is also connected a divider resistance between holding with the ORV+ of described reference voltage module, the AL end of described voltage-adjusting unit is connected another divider resistance between holding with the ORV-of described reference voltage module, and the AH of two described divider resistances and described voltage-adjusting unit holds, AL holds, AW holds formation one bleeder circuit.The voltage that described reference voltage module exports is through described bleeder circuit dividing potential drop, and output regulation signal gives described Current Control signal processing module, to determine that the output signal of described Current Control signal processing module is in set scope.Here, the conditioning signal of output is the signal form such as voltage, PWM.
The control signal that the conditioning signal that described voltage-adjusting unit exports can also be exported by described control module control.
Described control module connects at least two described voltage-adjusting units, and at least two described voltage-adjusting units connect a Current Control signal processing module respectively, connect described constant current output circuit respectively by described Current Control signal processing module; Also comprise at least two reference voltage modules, between at least two reference voltage modules and described voltage-adjusting unit, be respectively equipped with divider resistance.Realize a control module and control two constant current output circuits.
Described control module adopts the intelligent cells such as MCU (microcontroller), also can be the interface circuit that DLC (digital logic circuit), on-off circuit, analog regulation etc. can adjust duty.
Described Current Control signal processing module and described constant current output circuit can receive the electric signal that described control module exports respectively, and adjust its duty according to the electric signal that described control module exports.
Accompanying drawing explanation
Fig. 1 is circuit block diagram of the present invention.
Embodiment
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, setting forth the present invention further below in conjunction with concrete diagram.
Watt-hour meter micro-electric current inquiry power supply energy-saving guard system, comprise a power supply recognition system, power supply recognition system comprises a relay or thyristor 11, and relay or thyristor 11 access the cathode power supply incoming end of watt-hour meter; Power supply recognition system also comprises the supporting signal frequency receiving mechanism 12 of a signal frequency generating mechanism 9 and one and signal frequency generating mechanism 9, signal frequency generating mechanism 9 accesses the negative power supply incoming end of watt-hour meter, signal frequency receiving mechanism 12 accesses the cathode power supply incoming end of watt-hour meter, power supply recognition system also comprises a signal processing system 13, the signal input part of signal processing system 13 connects signal frequency receiving mechanism 12, and a control signal output terminal of signal processing system 13 connects relay or thyristor 11.The present invention signal frequency receiving mechanism 12 receive meet the signal of frequency requirement time, signal processing system 13 pilot relay or thyristor 11 are in conducting state, thus make supply line be in conducting state.When the signal that signal frequency receiving mechanism 12 receives does not meet frequency requirement or does not receive signal, signal processing system 13 pilot relay or thyristor 11 are in off-state, thus cut off the cathode power supply incoming end of watt-hour meter, make supply line be in off-state.
Signal processing system 13 thinks that signal consistent with the signal frequency that signal frequency generating mechanism 9 sends is the signal meeting frequency requirement.For consumer 8 power time, the cathode power supply incoming end of watt-hour meter and the negative power supply incoming end of watt-hour meter are connected, signal frequency receiving mechanism 12 receives the signal that signal frequency generating mechanism 9 sends, signal processing system 13 pilot relay or thyristor 11 are in conducting state, thus make supply line be in conducting state.When electric leakage occurring or gets an electric shock, signal frequency receiving mechanism 12 does not receive the signal that signal frequency generating mechanism 9 sends, and signal frequency generating mechanism 9 pilot relay or thyristor 11 are in not on-state, thus make supply line be in off-state.
The occurrence frequency of signal frequency generating mechanism 9 is less than 5 hertz.To reduce costs.
Watt-hour meter micro-electric current inquiry power supply energy-saving guard system also comprises a keyswitch 10, keyswitch connection signal disposal system.The control hierarchy of keyswitch, higher than the control hierarchy of signal frequency receiving mechanism, under the prerequisite that can receive electric signal at described signal frequency receiving mechanism, realizes the cut-out of signal frequency receiving mechanism.
Watt-hour meter micro-electric current inquiry power supply energy-saving guard system, also comprise a load current regulating system, load current regulating system comprises a control module 6, control module 6 is provided with a control signal output terminal, control module 6 connects a voltage-adjusting unit 2 by control signal output terminal, and the signal output part of voltage-adjusting unit 2 connects a Current Control signal processing module 5.Supply line is provided with a constant current output circuit 7, the Current Control conditioning signal of signal processing module 5 receiver voltage adjustment unit 2, and after carrying out analyzing and processing to conditioning signal, exports to constant current output circuit 7, realizes the adjustment of constant current output circuit 7 output current.Adjustable output current of the present invention, to adapt to the power demands of consumer 8 of multiple brand, multiple model.Current Control signal processing module 5 connection signal disposal system 13, signal processing system 13 communicates to connect a host computer by signal frequency generating mechanism 9.In power supply process, current parameters, power-on time, consumer model, owner information are uploaded host computer by signal processing system 13.
Control module 6 is also provided with a control signal input end, control signal input end connection signal disposal system 13; A Current adjustment static database matched containing the output valve of constant current output circuit 7 and the control signal of voltage-adjusting unit 2 is provided with in host computer, host computer judges the output valve needing the constant current output circuit 7 regulated, search the control signal matched, by signal processing system 13, control signal is passed to control module 6, export to voltage-adjusting unit 2 by control module 6 again, realize the adjustment to constant current output circuit 7 output current.
Also be provided with a dynamic data base in host computer, host computer input signal to external world carries out record, and stored in dynamic data base, dynamic data base is in use expanded, and forms the dynamic data base that has Self-learning Model; Host computer judges the output valve needing the constant current output circuit 7 regulated, the value that the output valve of constant current output circuit 7 obtained according to unceasing study in dynamic data base and the control signal of voltage-adjusting unit 2 match exports control signal, by signal processing system 13, control signal is passed to control module 6, export to voltage-adjusting unit 2 by control module 6 again, realize the adjustment to constant current output circuit 7 output current.
The processing mode of Current Control signal processing module 5 pairs of conditioning signals can adopt the signal processing modes such as short circuit output, filtering, signal limiter, signal conversion.To realize eliminating interference, signal shaping.Here conditioning signal can be the electrical signal form such as voltage, electric current, PWM, frequency.Voltage-adjusting unit 2 receives the control signal that control module 6 exports, regulate AH (mxm. of conditioning signal) end hold with AW (conditioning signal) between and AW (conditioning signal) holds and AL (minimum of conditioning signal) hold between equivalent resistance, realization outputs to the control of the conditioning signal of Current Control signal processing module 5.Here conditioning signal can be the electrical signal form such as voltage, electric current, PWM, frequency.It is the circuit or the chip that are equivalent to resistance that the AH of voltage-adjusting unit 2 holds between AW end and between AW end and AL end, and regulates equivalent resistance value according to the output signal of control module 6.Also comprise a reference voltage module 1, ORV+ (output voltage maximal value) end of reference voltage module 1, ORV-(output voltage minimum value) end connect AH end, the AL end of voltage-adjusting unit 2 respectively, so that the output signal of control voltage adjusting module is in the scope of setting.According to the requirement generation reference voltage of the conditioning signal that Current Control exports with signal processing module 5.The AH end of voltage-adjusting unit 2 is also connected a divider resistance 3 between holding with the ORV+ of reference voltage module 1, the AL end of voltage-adjusting unit 2 be connected between holding with the ORV-of reference voltage module 1 another divider resistance 4, two divider resistances and voltage-adjusting unit 2 AH holds, AL holds, AW holds formation one bleeder circuit.Reference voltage module 1 export voltage through bleeder circuit dividing potential drop, output regulation signal to Current Control signal processing module 5, to determine that the output signal of Current Control signal processing module 5 is in set scope.Here, the conditioning signal of output is the signal form such as voltage, PWM.The conditioning signal control signal that can also be exported by control module 6 that voltage-adjusting unit 2 exports control.
Control module 6 connects at least two voltage-adjusting units 2, and at least two voltage-adjusting units 2 connect a Current Control signal processing module 5 respectively, connect constant current output circuit 7 respectively by Current Control signal processing module 5; Also comprise at least two reference voltage modules 1, between at least two reference voltage modules 1 and voltage-adjusting unit 2, be respectively equipped with divider resistance.Realize a control module 6 and control two constant current output circuits 7.Control module 6 adopts the intelligent cells such as MCU (microcontroller), also can be the interface circuit that DLC (digital logic circuit), on-off circuit, analog regulation etc. can adjust duty.Current Control signal processing module 5 and constant current output circuit 7 can receive the electric signal that control module 6 exports respectively, and adjust its duty according to the electric signal that control module 6 exports.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (10)
1. watt-hour meter micro-electric current inquiry power supply energy-saving guard system, it is characterized in that, comprise a power supply recognition system, described power supply recognition system comprises a relay or thyristor, the cathode power supply incoming end of described relay or thyristor access watt-hour meter;
Described power supply recognition system also comprises the supporting signal frequency receiving mechanism of a signal frequency generating mechanism and one and described signal frequency generating mechanism, the cathode power supply incoming end of described signal frequency generating mechanism access watt-hour meter, the negative power supply incoming end of described signal frequency receiving mechanism access watt-hour meter;
Described power supply recognition system also comprises a signal processing system, and the signal input part of described signal processing system connects described signal frequency receiving mechanism, and a control signal output terminal of described signal processing system connects described relay or thyristor.
2. watt-hour meter according to claim 1 micro-electric current inquiry power supply energy-saving guard system, is characterized in that: the occurrence frequency of described signal frequency generating mechanism is less than 5 hertz.
3. watt-hour meter according to claim 1 micro-electric current inquiry power supply energy-saving guard system, is characterized in that: watt-hour meter micro-electric current inquiry power supply energy-saving guard system also comprises a keyswitch, and described keyswitch connects described signal processing system.
4. the micro-electric current inquiry of the watt-hour meter according to claim 1,2 or 3 power supply energy-saving guard system, it is characterized in that: watt-hour meter micro-electric current inquiry power supply energy-saving guard system, also comprise a load current regulating system, described load current regulating system comprises a control module, described control module is provided with a control signal output terminal, described control module connects a voltage-adjusting unit by control signal output terminal, and the signal output part of described voltage-adjusting unit connects a Current Control signal processing module;
Described supply line is provided with a constant current output circuit, described Current Control signal processing module receives the conditioning signal of described voltage-adjusting unit, and after analyzing and processing is carried out to conditioning signal, export to constant current output circuit, realize the adjustment of described constant current output circuit output current.
5. watt-hour meter according to claim 4 micro-electric current inquiry power supply energy-saving guard system, is characterized in that: described signal processing system communicates to connect a host computer by described signal frequency generating mechanism.
6. watt-hour meter according to claim 5 micro-electric current inquiry power supply energy-saving guard system, it is characterized in that: described control module is also provided with a control signal input end, described control signal input end connects described signal processing system;
A Current adjustment static database matched containing the output valve of constant current output circuit and the control signal of voltage-adjusting unit is provided with in described host computer, described host computer judges the output valve needing the constant current output circuit regulated, search the control signal matched, by described signal processing system, described control signal is passed to described control module, export to described voltage-adjusting unit by described control module again, realize the adjustment to constant current output circuit output current.
7. watt-hour meter according to claim 6 micro-electric current inquiry power supply energy-saving guard system, it is characterized in that: in described host computer, be also provided with a dynamic data base, described host computer input signal to external world carries out record, and stored in dynamic data base, dynamic data base is in use expanded, and forms the dynamic data base that has Self-learning Model; Described host computer judges the output valve needing the constant current output circuit regulated, the value that the output valve of constant current output circuit obtained according to unceasing study in dynamic data base and the control signal of voltage-adjusting unit match exports control signal, by described signal processing system, described control signal is passed to described control module, export to described voltage-adjusting unit by described control module again, realize the adjustment to constant current output circuit output current.
8. watt-hour meter according to claim 4 micro-electric current inquiry power supply energy-saving guard system, it is characterized in that: described voltage-adjusting unit receives the control signal that described control module exports, regulate the equivalent resistance between the mxm. end of conditioning signal and conditioning signal end and between the minimum end of conditioning signal end and conditioning signal, realize the control outputting to the conditioning signal of described Current Control signal processing module.
9. watt-hour meter according to claim 8 micro-electric current inquiry power supply energy-saving guard system, it is characterized in that: also comprise a reference voltage module, the output voltage maximal value end of described reference voltage module, output voltage minimum value end connect the mxm. end of the conditioning signal of described voltage-adjusting unit, the minimum end of conditioning signal respectively, so that the output signal controlling described voltage regulator module is in the scope of setting.
10. watt-hour meter according to claim 9 micro-electric current inquiry power supply energy-saving guard system, it is characterized in that: between the mxm. end of the conditioning signal of described voltage-adjusting unit and the output voltage maximal value end end of described reference voltage module, be also connected a divider resistance, another divider resistance is connected between the minimum end of the conditioning signal of described voltage-adjusting unit and the output voltage minimum value end of described reference voltage module, the mxm. end of the conditioning signal of two described divider resistances and described voltage-adjusting unit, the minimum end of conditioning signal, conditioning signal end forms a bleeder circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410714345.3A CN104655895A (en) | 2014-12-01 | 2014-12-01 | Micro-current inquiry power supply energy-saving protection system for watt-hour meter |
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| CN201410714345.3A CN104655895A (en) | 2014-12-01 | 2014-12-01 | Micro-current inquiry power supply energy-saving protection system for watt-hour meter |
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| CN104655895A true CN104655895A (en) | 2015-05-27 |
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| CN201410714345.3A Pending CN104655895A (en) | 2014-12-01 | 2014-12-01 | Micro-current inquiry power supply energy-saving protection system for watt-hour meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116930671A (en) * | 2023-09-19 | 2023-10-24 | 成都光创联科技有限公司 | Circuit and method for testing performance of current-driven optical device |
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