CN101413966A - Modular electric energy metering machine - Google Patents
Modular electric energy metering machine Download PDFInfo
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- CN101413966A CN101413966A CNA2007100535800A CN200710053580A CN101413966A CN 101413966 A CN101413966 A CN 101413966A CN A2007100535800 A CNA2007100535800 A CN A2007100535800A CN 200710053580 A CN200710053580 A CN 200710053580A CN 101413966 A CN101413966 A CN 101413966A
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Abstract
The invention relates to a modular power metering device, comprising: a power supply unit for providing working power; a power line input and output unit which comprises a live line access end, a zero line access end and a live line output end, the live line access end is connected with a live line in a power circuit, the live line output end is connected with a next level power device; a power metering unit for calculating active/reactive power values which pass through the live line access end and the zero line access end; and a pulse signal output unit for converting the power values calculated by the power metering unit to pulse signals which are directly proportional to the power values for output. Therefore, the modular power metering device can not only realize the basic functions for power metering and save materials and processing cost, but can also facilitate the development of uniform metering standards of power meters due to the modular characteristic and reduce the size when in assembly of a plurality of meters; meanwhile, the modular power metering device facilitates the combination with other functional units and facilitates the maintenance and the power management.
Description
Technical field
What the present invention relates to is a kind of Application of Power Metering Instruments, particularly be a kind of basic electric power meter with modular characteristics.
Background technology
Along with expanding economy, the national economy every field improves constantly the dependence of electric power energy, in order to measure the quantity with electric consumption, the on-the-spot realization of electric power electricity consumption is effectively managed, so Application of Power Metering Instruments is arisen at the historic moment, and become a focus direction of constantly bringing forth new ideas in the power technology field.
Mainly be electric energy meter for the existing power metering outfit, its can for single epi-position electric energy meter also can be multi-epitope electric energy meter, but find still to exist following defective through for many years management of power use practice;
At first, because manufacturer is various, the difference of production product specification, therefore in the on-the-spot unification that is difficult to the realization standard of power department electricity consumption, often in order to realize multi-functional requirement, therefore will increase auxiliary device around existing ammeter, and cause the electric-power metering set of equipments bulky, production cost increases;
Secondly, in case power department changes to the management expectancy or the standard at electricity consumption scene, manufacturer just need exert from newly the structure of electric-power metering set of equipments being transformed, and original product just can only be eliminated, and the cost of power supply department is wasted greatly;
Once more, for power department, existing power metering set of equipments needs a large amount of winding displacement wirings in application process, need expend very big cost of labor, simultaneously numerous and jumbled construction package is given to install and has correctly been brought great difficulty, be unfavorable for the on-the-spot realization of electricity consumption fine-grained management, use electrical loss thereby caused;
At last, in a single day existing power metering set of equipments breaks down or needs periodic replacement, and it is all superseded just can only to put in order table, thereby the electric-power metering set of equipments that more renews has caused overlapping investment, for user and power department have increased cost.
Creator of the present invention through research and practice for a long time, adopts the standardized thought of a kind of modularization finally, has obtained this creation.
Summary of the invention
The objective of the invention is to, a kind of modular electric energy metering machine is provided, in order to overcome above-mentioned defective.
For realizing above-mentioned technical purpose, the invention provides a kind of modular electric energy metering machine, it comprises:
One power supply unit is in order to provide power for operation;
One line of electric force input-output unit, it comprises: phase line incoming end and zero line incoming end and line output terminal mutually, described phase line incoming end is connected with phase line in the power circuit, and it is connected described phase line output terminal with the next stage power equipment;
One electric energy metrical unit calculates the meritorious/reactive energy value via described phase line incoming end and zero line incoming end;
One pulse signal output unit, the energy value that described electric energy metrical unit is calculated is converted into the pulse signal output that is directly proportional with described energy value.
Preferable, also comprise a box body, described power supply unit, line of electric force input-output unit, electric energy metrical unit and pulse signal output unit are arranged in the described box body, and it has a cap, and described phase line incoming end and line output terminal mutually are arranged at the two ends of described box body.
Preferable, described power supply unit comprises:
One power-switching circuit, it carries out transformation with power voltage line handles, in order to providing power for operation with electric device.
Preferable, also comprise:
One standby power supply;
One charging circuit, it is connected with the output terminal of described power-switching circuit, and to described standby power supply power supply;
One detecting commutation circuit, whether it has voltage output in order to detect described power-switching circuit, and when described power-switching circuit no-voltage was exported, starting described standby power supply provided power for operation;
Preferable, also comprise:
One acousto-optic warning device, it is connected with described detecting commutation circuit, when described power-switching circuit no-voltage is exported, in order to carry out sound and light alarm.
Preferable, described electric energy metrical unit, it comprises:
One current signal Acquisition Circuit is in order to the current signal on the real-time collection line of electric force;
One voltage signal acquisition circuit is in order to the voltage signal on the real-time collection line of electric force;
One computing and treatment circuit obtain the instantaneous power value in order to described current signal and described voltage signal are multiplied each other, and obtain energy value in the determining time by integrator;
Preferable, described pulse signal output unit is a voltage/frequency conversion frequency dividing circuit;
Preferable, the output terminal of described zero line input end and described pulse signal output unit is the differing needles that is integrated in a serial plug;
Preferable, comprising that also one uses power detection circuit, it comprises:
Whether one current detection circuit has electric current to flow through in order to detect described phase line input end;
Whether one pulse-detecting circuit has pulse signal output in order to detect described pulse signal output unit;
One detects decision circuitry, and when described phase line input end has electric current to flow through, and the output of described pulse signal output unit pulse-free signal judges that then modular electric energy metering machine of the present invention breaks down;
Preferable, also comprising an acousto-optic warning device, it is connected with the power detection circuit output terminal with described;
Preferable, also comprising an acousto-optic warning device, it is connected with described detection decision circuitry output terminal, when confirming that modular electric energy metering machine of the present invention breaks down, in order to carry out sound and light alarm;
Preferable, described current detection circuit comprises:
One telefault, it is set on the described phase line;
One comparer, one input end are provided with a reference voltage, and it is imported an end in addition and is connected with the output terminal of described telefault;
Preferable, described pulse-detecting circuit comprises:
One comparer, one input end are provided with a reference voltage, and it is imported an end in addition and is connected with the output terminal of described pulse signal output unit;
Preferable, described detection decision circuitry is a processor, the one input interface links to each other with the output terminal of described current monitoring circuit, and an input interface links to each other with described pulse observation circuit output terminal, judges that by described processor described modular electric energy metering machine breaks down;
Preferable, described processor in order to receiving the status signal of corresponding units, and sends control signal to each described unit, and described processor is single-chip microcomputer, embedded system or FPGA (Field Programmable Gate Array) control;
Preferable, also comprising a display unit, it comprises:
One display screen, it is embedded on described box body;
One drive circuit, it drives described display screen and shows power consumption according to the data-signal of the output of control signal that receives described processor output or described metering units.
Preferable, also comprising a display unit, it comprises:
One mechanical register, it is embedded on described box body;
One stepper motor, it drives described mechanical register action and makes described mechanical register show power consumption according to the data-signal of the output of control signal that receives described processor output or described metering units;
Preferable, also comprise: a counting unit, it comprises:
One data processing circuit, the data-signal that it receives the output of the pulse signal of described pulse signal output unit output or described metering units carries out the energy value stored counts;
One internal communication circuit, it links together described data processing circuit and described processor;
Preferable, also comprising a failure detector circuit, described testing circuit is connected with described data processing circuit, in the no signal output when energy value adds up of described data processing circuit, judges that then described counting unit has fault.
Preferable, also comprising the unit that prevents the box body unnormal unlocking, it comprises: an open detection circuit or an executive circuit, wherein,
Whether described open detection circuit is opened in order to detect box body, sends detection signal and give described processor and generate a control signal when opening;
Described executive circuit receives described control signal, and produces the action of reporting to the police or cutting off the line of electric force connection of place circuit;
Preferable, described open detection circuit is a pressure transducer or normal open switch, wherein,
Described pressure transducer, it is arranged at the cap place of described box body, when the pressure at cap place during less than a certain threshold value, produces described detection signal;
Described normal open switch, it is arranged at encapsulation place of described box body, when encapsulation place does not have the space, described normal open switch no signal output, on the contrary then normal open switch produces described detection signal;
Preferable, described executive circuit is an acoustic-optic alarm or a line of electric force open circuit, wherein, the line of electric force open circuit is that a relay or isolating switch are arranged on the described phase alignment circuit;
Preferable, also comprise: a memory circuit, it is connected mutually with described data processing circuit and described open detection circuit respectively, when having a power failure, with the energy value of described data processing circuit accumulation, stores in the described memory circuit; When restoring electricity, read the energy value of storing in the described memory circuit by described data processing circuit; And described memory circuit writes down an event information when unnormal unlocking takes place.
Preferable, also comprise a relay or isolating switch, when breaking down situation, cut off line of electric force.
Beneficial effect of the present invention compared with the prior art is,
One, modular electric energy metering machine of the present invention not only can be used as the basic module of single epi-position ammeter, the more important thing is that it can become the basic module of multi-epitope ammeter, and the basis of the various functional units that need as electricity consumption situ metrology administrative institute of integrated power department;
Two, because the modular characteristics of modular electric energy metering machine of the present invention makes production division realize the scale High-efficient Production, reduced production cost greatly;
Three, the electric energy measuring equipment of producing by modular electric energy metering machine of the present invention makes power department greatly reduce metering overall investment cost and installation work-hour in application process, provide the on-the-spot fine-grained management of electricity consumption necessary technical conditions simultaneously, used electrical loss thereby reduced;
Four, the electric energy measuring equipment produced of modular electric energy metering machine of the present invention in use breaks down or when regularly replacing, by changing corresponding modular unit, has avoided overlapping investment, for user and power department have been saved cost.
Description of drawings
Fig. 1 is the functional block diagram of modular electric energy metering machine preferred embodiment one of the present invention;
Fig. 2 A is the main three-dimensional structure diagram of modular electric energy metering machine box body structure one preferred embodiment of the present invention;
Fig. 2 B is the secondary three-dimensional structure diagram of modular electric energy metering machine box body structure one preferred embodiment of the present invention;
Fig. 3 is the functional block diagram of modular electric energy metering machine power supply unit of the present invention;
Fig. 4 is the functional block diagram of modular electric energy metering machine electric energy metrical of the present invention unit;
Fig. 5 is the functional block diagram of another preferred embodiment of modular electric energy metering machine of the present invention;
Fig. 6 has the functional block diagram of expanding element one preferred embodiment for modular electric energy metering machine of the present invention;
Fig. 7 is the functional block diagram of modular electric energy metering machine counting unit of the present invention;
Fig. 8 A is the functional block diagram of modular electric energy metering machine display unit one preferred embodiment of the present invention;
Fig. 8 B is the functional block diagram of another preferred embodiment of modular electric energy metering machine display unit of the present invention;
Fig. 9 is the functional block diagram of modular electric energy metering machine of the present invention from detecting unit;
Figure 10 is the functional block diagram of modular electric energy metering machine of the present invention with power detection circuit;
Figure 10 A is the circuit diagram of modular electric energy metering machine of the present invention with power detection circuit;
Figure 10 B has the functional block diagram of the counting unit of counting unit testing circuit for modular electric energy metering machine of the present invention;
Figure 11 A prevents the functional block diagram of the unit of box body unnormal unlocking for modular electric energy metering machine of the present invention;
Figure 11 B prevents the structural representation of open detection circuit embodiments one in the unit of box body unnormal unlocking for modular electric energy metering machine of the present invention;
Figure 11 C prevents the structural representation of open detection circuit embodiments two in the unit of box body unnormal unlocking for modular electric energy metering machine of the present invention.
Embodiment
Below in conjunction with accompanying drawing, be described in more detail with other technical characterictic and advantage the present invention is above-mentioned.
See also shown in Figure 1, it is for the functional block diagram of modular electric energy metering machine preferred embodiment one of the present invention, it comprises: a line of electric force input-output unit 2, one power supply unit 1, an one electric energy metrical unit 3 and a pulse signal output unit 4, wherein, described line of electric force input-output unit 2 comprises: phase line incoming end 22 and zero line incoming end 21 and line output terminal 23 mutually, described phase line incoming end 22 is connected with phase line in the power circuit, and described phase line output terminal 23 is connected with the next stage power equipment; Described power supply unit 1 provides power for operation in order to obtain the voltage that described phase line incoming end 22 and zero line incoming end 21 insert by other electricity consumption device that is converted to modular electric energy metering machine of the present invention accordingly; Described electric energy metrical unit 3 is connected with described power supply unit 1, calculates the meritorious/reactive energy value via described phase line incoming end 22 and zero line incoming end 21; Described pulse signal output unit 4, it is connected with described electric energy metrical unit 3, the energy value that described electric energy metrical unit 3 is calculated is converted into the pulse signal output that is directly proportional with described energy value, and the pulse signal of generation can be used as the data input signal of other expanding element.
For preferred embodiment one disclosed modular electric energy metering machine of the present invention, it needs a box body 5 structures that its circuit part is encapsulated and protects, see also shown in Fig. 2 A, it is for the main three-dimensional structure diagram of modular electric energy metering machine box body structure one preferred embodiment of the present invention, it comprises: a base plate 50, in order to the device of the inner installing of carrying box body; One cap 52; it is located on the described base plate 50; described device is protected; be provided with phase line incoming end 5 in the upper end of described cap 52; be that its relative end is provided with phase line output terminal 54; be provided with locking hole 55 at described cap 52 upper surfaces; in order to be screwed onto with described base plate 50 by screw, these all provide corresponding physical construction interface for the functional structure expansion of modular electric energy metering machine of the present invention also to have display screen form 58, pulse matching hole 56 and a pulse indicator lamp hole 57 on described cap 52.
See also shown in Fig. 2 B, it is for the secondary three-dimensional structure diagram of modular electric energy metering machine box body structure one preferred embodiment of the present invention, it is to carry out projection from the proceeds posterolateral of described box body 5, can significantly see, on described base plate 50, be provided with some fastener holes 59, it is in order to realize the location that carry out described box body 5 and installation site and to fixedly install, it is emphasized that especially for outstanding modular characteristics, a feature of the present invention just is, it comprises: a phase line upstream end 51 and line output terminal 54 and part input end 61 mutually, and described zero line input end 61 is integrated on the serial plug 6 with the output terminal of described pulse signal output unit 4, corresponding with differing needles, be implemented in by plug and carry out the function expansion on the basis of described modular electric energy metering machine.
See also shown in Figure 3ly, it is for the functional block diagram of modular electric energy metering machine power supply unit of the present invention; It comprises: a power converting circuit 11, and it carries out transformation with power voltage line handles, and in order to power for operation to be provided, described power converting circuit 11 is connected with zero line input end 21 with described phase line input end 22; One charging circuit 12, it is arranged between the output terminal and described standby power supply 13 of described power-switching circuit 11, in order to power to described standby power supply 13; One detecting commutation circuit 14, whether it has voltage output in order to detect described power-switching circuit 11, when described power-switching circuit 11 no-voltages are exported, start described standby power supply 13 and provide power for operation for the electricity consumption device of described modular electric energy metering machine, because the accumulate finite capacity of described standby power supply, therefore once the situation of power converting circuit fault takes place, just must inform the user, perhaps cut off circuit 942 (isolating switch) and cut off power circuit to prevent management of power use department being caused waste of power resources and loss owing to described power supply unit 1 breaks down by a line of electric force, can certainly adopt an acoustic-optic alarm 941 to be connected with described detecting commutation circuit 14, when described power-switching circuit 11 no-voltages are exported, trigger the sound and light of alarm of described acoustic-optic alarm 941.
See also shown in Figure 4ly, it is for the functional block diagram of modular electric energy metering machine electric energy metrical of the present invention unit; Described electric energy metrical unit 3 is its core textures for modular electric energy metering machine of the present invention, and it comprises: a current signal Acquisition Circuit 31, in order to the current signal on the real-time collection line of electric force; One voltage signal acquisition circuit 32 is in order to the voltage signal on the real-time collection line of electric force; One computing and treatment circuit 33, it comprises: a multiplier 331 and an integrator 332, by described multiplier 331 described current signal and described voltage signal are multiplied each other and to obtain the instantaneous power value, the energy value that obtains in the determining time by described integrator 332 then, and the energy value that obtains being converted to pulse signal output by a pulse signal output unit 4, described pulse signal output unit 4 can be a voltage/frequency conversion frequency dividing circuit.
Certainly for the user, modular electric energy metering machine of the present invention is applied to concrete production practices obviously more to be of practical significance, therefore see also shown in Figure 5, it is for the functional block diagram of another preferred embodiment of modular electric energy metering machine of the present invention, the difference that itself and above-mentioned Fig. 1 structure are formed is, in order to improve the function of the foregoing description, make the user can clearly obtain it uses electric energy in a period of time of determining information, be convenient to the inquiry that management of power use unit consumes each family power consumption simultaneously, the present invention has increased a counting unit 7 and a display unit 8, described counting unit 7 is connected with the output terminal of described metering units 8, thereby and the pulse signal of its generation added up produce a data-signal, described display unit 8 receives described data-signal, to be shown by the electric energy aggregate-value that electricity consumer consumes by modular electric energy metering machine of the present invention, that is to say that present embodiment has possessed the function of a basic electric energy meter, can insert in user's the power line circuit and use.
In order to adapt to modular electric energy metering machine function expansion needs of the present invention, the invention provides a separate processor 9, in order to receive the status signal of corresponding units or circuit, and send control signal to units corresponding and circuit, thereby the function of coordinating described modular electric energy metering machine realizes also can carrying out condition monitoring simultaneously, described processor 9 is a single-chip microcomputer, embedded system or FPGA (Field Programmable Gate Array) control, selecting which kind of device is according to the requirement of data processing total amount, require decision to modular electric energy metering machine functional requirement of the present invention and to the ultimate small product size of the present invention.
For the extendability of this standard modular electric energy metering machine is clearly introduced, the spy provides Fig. 6, it is for the functional block diagram of modular electric energy metering machine functional expansion unit one preferred embodiment of the present invention, the difference of itself and above-mentioned Fig. 1 structure is, in order to satisfy the demand that modular electric energy metering machine of the present invention inserts some functional expansion units, the present invention has increased by a counting unit 7, one processor 9 and a display unit 8, utilize the feature of the multiport of described processor 9 can also introduce more expanding element 0 simultaneously, described expanding element 0 can be the remote inquiry unit, the pre-payment unit, communication unit etc., described counting unit 7 is connected with the output terminal of described pulse signal output unit 4, then the signal of its generation is added up and produce a status signal, and it is transferred to the signal input part of described processor 9, described processor 9 according to the status signal (command signal) of described status signal and the expanding element 0 that is connected with other port by described processor 9 internal preset program of operation, produce control signal, the processing of control data and the action of corresponding units, described processor 9 is connected with described display unit 8, receive described control signal, will be shown by the energy value that electricity consumer consumes by modular electric energy metering machine of the present invention.
Occurred counting unit in the above embodiments, seen also shown in Figure 7ly, it is the functional block diagram of modular electric energy metering machine counting unit of the present invention; Described counting unit 7 comprises: a data processing circuit 72, and it receives the pulse signal of described pulse signal output unit 4 outputs, and carries out the energy value stored counts, also can directly obtain the energy value signal of described metering units 3; One internal communication circuit 73, it links together described data processing circuit 72 with described processor 9, it is transferred to described processor 9 one data-signals, thereby makes described processor 9 produce control signal corresponding, is sent to corresponding receiving element or circuit.
For display unit 8, see also shown in Fig. 8 A and Fig. 8 B, it is respectively the functional block diagram of two preferred embodiments of modular electric energy metering machine display unit of the present invention; Described display unit 8 receives the data-signal that described processor 9 sends, and carries out data presentation, and embodiment one adopts liquid crystal display or electronics to show that it comprises: a display screen 81, and it is embedded on described box body 5; One drive circuit 82, it drives described display screen 81 demonstration power consumptions according to receiving described control signal.What embodiment two adopted is that machinery shows that it comprises: a mechanical register 83 need be embedded equally on described box body 5; One stepper motor 84 according to the pulse signal that receives described processor 9 output units output, drives described mechanical register 83 actions and makes described mechanical register 83 show power consumption.
It is emphasized that characteristics especially for outstanding modular electric energy metering machine of the present invention, another key character of the present invention is, be provided with from detecting unit and can the duty of units corresponding or circuit be detected automatically, judge by detecting whether corresponding unit or circuit working be normal, when breaking down, produce corresponding action, see also shown in Figure 9ly, it is the functional block diagram of modular electric energy metering machine of the present invention from detecting unit; It comprises:
With power detection circuit 91, whether have electric current to flow through in order to detect line of electric force, and whether judge module electric energy metering device break down;
Whether one counting unit testing circuit 92 breaks down in order to the data processing circuit 72 to described counting unit 7 and to detect;
Whether one electric power detecting commutation circuit 93 breaks down in order to the power converting circuit to described power supply unit 1 and to detect;
Fault executive circuit 94, it comprises: acoustic-optic alarm 941, when finding that above-mentioned fault exists, carry out sound and light alarm, have fault, indicate the reason that produces fault as the pilot lamp of employing different colours or different sound in order to remind user's modular electric energy metering machine of the present invention; One line of electric force open circuit 942, it adopts isolating switch, is arranged on the described line of electric force, when non-power failure fault takes place, cuts off the electric power supply that flows to electricity consumer; Need to prove described electric power detecting commutation circuit 93 and corresponding fault topworks 94 thereof, in the structure of above-mentioned power supply unit, set forth, here only be that the unit that its functional character carries out is sorted out, therefore no longer its structure is given unnecessary details, three above-mentioned detections simultaneously can make up and accept or reject according to the actual needs, become product from detecting unit.
See also shown in Figure 10ly, it is the functional block diagram of modular electric energy metering machine of the present invention with power detection circuit; Of the present inventionly comprise with power detection circuit 91:
Whether one current detection circuit 911 has electric current to flow through in order to detect described phase line input end 22; One detects decision circuitry 913, when described phase line input end 22 has electric current to flow through, and during the output of described pulse signal output unit 4 pulse-free signals, judges that then modular electric energy metering machine of the present invention breaks down.
See also shown in Figure 10 A, it is the circuit diagram of modular electric energy metering machine of the present invention with power detection circuit; Described current detection circuit C2 comprises: a telefault L1, and it is set on the described phase line A; One comparer IC1, the one inverting input is provided with a reference voltage, its in-phase end is connected with the output terminal of described telefault L1, on described phase line A, there is electric current to flow through, inducing voltage signal compares with the reference voltage of comparer IC1 inverting input, thereby the output terminal that makes described comparer IC1 is exported a voltage signal, judges whether have electric current to flow through on the line of electric force by this voltage signal.
Described pulse-detecting circuit C1 comprises: a comparer IC2, and the one end of oppisite phase is provided with a reference voltage, and its in-phase end is connected with the output terminal of described pulse signal output unit 4; The output terminal of described comparer IC2 is connected with described detection decision circuitry, described detection decision circuitry is a processor MCU, the one input interface links to each other with the output terminal of described current detection circuit C2, one input interface links to each other with described pulse-detecting circuit C1 output terminal, when the in-phase end of the comparer IC2 of described pulse-detecting circuit receives pulse signal, then it exports a noble potential, the comparer IC1 of described current detection circuit exports a noble potential to described processor MCU, in described one time period of processor MCU internal preset, when described current detection circuit input high potential signal enters described processor MCU, if in described Preset Time, do not have the high potential signal input of pulse-detecting circuit, think that then modular electric energy metering machine of the present invention breaks down.
See also shown in Figure 10 B, it has the functional block diagram of the counting unit of counting unit testing circuit for modular electric energy metering machine of the present invention; When the signal that described counting unit testing circuit 92 obtains described metering units 3 at described data processing unit 71 carries out power consumption accumulative total, all obtain a pulse signal from described data processing unit 71 at every turn, when described data processing unit 71 has obtained the signal of described metering units 3 and described counting unit testing circuit 92 does not obtain pulse signal, then described counting unit testing circuit 92 sends a status signal to described processor 9, send control signal by described processor 9 to described fault executive circuit 94, thereby produce sound and light alarm or/and cut off the action of power circuit.
See also shown in Figure 11, Figure 11 A, Figure 11 B, its prevent for modular electric energy metering machine of the present invention the box body unnormal unlocking the unit functional block diagram with and two kinds of embodiments of open detection circuit; The described unit of box body unnormal unlocking that prevents is in order to when unnormal unlocking takes place in described box body 5, produce the action of reporting to the police or cutting off power circuit, its fundamental purpose is to prevent the illegal stealing of bad personnel, perhaps avoid the layman to open the adverse consequences that box body causes electric shock, it comprises: an open detection circuit 41 and an executive circuit (fault executive circuit 94), wherein
Whether described open detection circuit 41 is opened in order to detect box body, sends detection signal and give described processor 9 and generate a control signal when opening;
Described executive circuit (fault executive circuit 94) receives described control signal, and produces the action of reporting to the police or cutting off the line of electric force connection of place circuit.
See also shown in Figure 11 A, described open detection circuit comprises: a pressure transducer 412, wherein, described pressure transducer 412 is connected with an A/D converter 413, and link to each other with the status signal port of described processor 9, pressure transducer 412 is arranged at cap 52 places of described box body, because the extruding of screw 411 produces described detection signal, and be sent to described status signal port, by comparing with a threshold value of in described processor 9, presetting, if less than this threshold value then export control signal and give described executive circuit, described executive circuit (fault executive circuit 94) can be the fault executive circuit 94 of self check measurement unit, realizes preventing the box body unnormal unlocking by sound and light alarm and cut-out power circuit.
See also shown in Figure 11 B, described open detection circuit comprises: a normal open switch 414 or a normally closed switch, here be that example describes with normal open switch 414, described normal open switch 414 is arranged at encapsulation place of described box body cap 52, when encapsulation place does not have the space, described normal open switch 414 no signals output, otherwise, when screw 411 by spin-up, described normal open switch 414 is closed because spring 415 acts on, thereby the output control signal is given described executive circuit (fault executive circuit 94), described executive circuit (fault executive circuit 94) can be the fault executive circuit 94 of self check measurement unit, realizes preventing the box body unnormal unlocking by sound and light alarm and cut-out power circuit.
True the present invention has the function that writes down at the unusual condition that line of electric force took place, it is that corresponding historical information is stored in the memory circuit 13 of described counting unit, described memory circuit 13 is connected mutually with described data processing circuit 72 and described open detection circuit 41 respectively, when having a power failure, with the energy value of described data processing circuit 72 accumulations, store in the described memory circuit 13; When restoring electricity, read the energy value of storing in the described memory circuit 13 by described data processing circuit 72; And can when unnormal unlocking takes place box body 5, write down this event information.
The above only is preferred embodiment of the present invention, only is illustrative for the purpose of the present invention, and nonrestrictive.Those skilled in the art is understood, and can carry out many changes to it in the spirit and scope that claim of the present invention limited, revise, even equivalence, but all will fall within the scope of protection of the present invention.
Claims (24)
1, a kind of modular electric energy metering machine is characterized in that, it comprises:
One power supply unit is in order to provide power for operation;
One line of electric force input-output unit, it comprises: phase line incoming end and zero line incoming end and line output terminal mutually, described phase line incoming end is connected with phase line in the power circuit, and it is connected described phase line output terminal with the next stage power equipment;
One electric energy metrical unit calculates the meritorious/reactive energy value via described phase line incoming end and zero line incoming end;
One pulse signal output unit, the energy value that described electric energy metrical unit is calculated is converted into the pulse signal output that is directly proportional with described energy value.
2, modular electric energy metering machine according to claim 1, it is characterized in that, also comprise a box body, described power supply unit, line of electric force input-output unit, electric energy metrical unit and pulse signal output unit are arranged in the described box body, it has a cap, and described phase line incoming end and line output terminal mutually are arranged at the two ends of described box body.
3, modular electric energy metering machine according to claim 1 is characterized in that, described power supply unit comprises:
One power-switching circuit, it carries out transformation with power voltage line handles, in order to providing power for operation with electric device.
4, modular electric energy metering machine according to claim 3 is characterized in that, also comprises:
One standby power supply;
One charging circuit, it is connected with the output terminal of described power-switching circuit, and to described standby power supply power supply;
One detecting commutation circuit, whether it has voltage output in order to detect described power-switching circuit, and when described power-switching circuit no-voltage was exported, starting described standby power supply provided power for operation.
5, modular electric energy metering machine according to claim 4 is characterized in that, also comprises:
One acousto-optic warning device, it is connected with described detecting commutation circuit, when described power-switching circuit no-voltage is exported, in order to carry out sound and light alarm.
6, modular electric energy metering machine according to claim 1 is characterized in that, described electric energy metrical unit, and it comprises:
One current signal Acquisition Circuit is in order to the current signal on the real-time collection line of electric force;
One voltage signal acquisition circuit is in order to the voltage signal on the real-time collection line of electric force;
One computing and treatment circuit obtain the instantaneous power value in order to described current signal and described voltage signal are multiplied each other, and obtain energy value in the determining time by integrator.
7, modular electric energy metering machine according to claim 1 is characterized in that, described pulse signal output unit is a voltage/frequency conversion frequency dividing circuit.
According to claim 1 or 7 described modular electric energy metering machines, it is characterized in that 8, the output terminal of described zero line input end and described pulse signal output unit is the differing needles that is integrated in a serial plug.
9, modular electric energy metering machine according to claim 1 is characterized in that, comprises that also one uses power detection circuit, and it comprises:
Whether one current detection circuit has electric current to flow through in order to detect described phase line input end;
Whether one pulse-detecting circuit has pulse signal output in order to detect described pulse signal output unit;
One detects decision circuitry, and when described phase line input end has electric current to flow through, and the output of described pulse signal output unit pulse-free signal judges that then modular electric energy metering machine of the present invention breaks down.
10, modular electric energy metering machine according to claim 9 is characterized in that, also comprises an acousto-optic warning device, and it is connected with the power detection circuit output terminal with described.
11, modular electric energy metering machine according to claim 9, it is characterized in that, also comprise an acousto-optic warning device, it is connected with described detection decision circuitry output terminal, when confirming that modular electric energy metering machine of the present invention breaks down, in order to carry out sound and light alarm.
12, according to claim 9 or 10 described modular electric energy metering machines, it is characterized in that described current detection circuit comprises:
One telefault, it is set on the described phase line;
One comparer, one input end are provided with a reference voltage, and it is imported an end in addition and is connected with the output terminal of described telefault.
13, modular electric energy metering machine according to claim 9 is characterized in that, described pulse-detecting circuit comprises:
One comparer, one input end are provided with a reference voltage, and it is imported an end in addition and is connected with the output terminal of described pulse signal output unit.
14, modular electric energy metering machine according to claim 9, it is characterized in that, described detection decision circuitry is a processor, the one input interface links to each other with the output terminal of described current monitoring circuit, one input interface links to each other with described pulse observation circuit output terminal, judges that by described processor described modular electric energy metering machine breaks down.
15, modular electric energy metering machine according to claim 14, it is characterized in that described processor is in order to receive the status signal of corresponding units, and sending control signal to each described unit, described processor is single-chip microcomputer, embedded system or FPGA (Field Programmable Gate Array) control.
16, modular electric energy metering machine according to claim 2 is characterized in that, also comprises a display unit, and it comprises:
One display screen, it is embedded on described box body;
One drive circuit, it drives described display screen and shows power consumption according to the data-signal of the output of control signal that receives described processor output or described metering units.
17, modular electric energy metering machine according to claim 2 is characterized in that, also comprises a display unit, and it comprises:
One mechanical register, it is embedded on described box body;
One stepper motor, it drives described mechanical register action and makes described mechanical register show power consumption according to the data-signal of the output of control signal that receives described processor output or described metering units.
18, modular electric energy metering machine according to claim 17 is characterized in that, also comprises: a counting unit, and it comprises:
One data processing circuit, the data-signal that it receives the output of the pulse signal of described pulse signal output unit output or described metering units carries out the energy value stored counts;
One internal communication circuit, it links together described data processing circuit and described processor.
19, modular electric energy metering machine according to claim 18, it is characterized in that, also comprise a failure detector circuit, described testing circuit is connected with described data processing circuit, in the no signal output when energy value adds up of described data processing circuit, judge that then described counting unit has fault.
20, modular electric energy metering machine according to claim 2 is characterized in that, also comprises the unit that prevents the box body unnormal unlocking, and it comprises: an open detection circuit or an executive circuit, wherein,
Whether described open detection circuit is opened in order to detect box body, sends detection signal and give described processor and generate a control signal when opening;
Described executive circuit receives described control signal, and produces the action of reporting to the police or cutting off the line of electric force connection of place circuit.
21, modular electric energy metering machine according to claim 20 is characterized in that, described open detection circuit is a pressure transducer or normal open switch, wherein,
Described pressure transducer, it is arranged at the cap place of described box body, when the pressure at cap place during less than a certain threshold value, produces described detection signal;
Described normal open switch, it is arranged at encapsulation place of described box body, when encapsulation place does not have the space, described normal open switch no signal output, on the contrary then normal open switch produces described detection signal.
22, modular electric energy metering machine according to claim 20, it is characterized in that described executive circuit is an acoustic-optic alarm or a line of electric force open circuit, wherein, the line of electric force open circuit is that a relay or isolating switch are arranged on the described phase alignment circuit.
23, according to claim 18 or 22 described modular electric energy metering machines, it is characterized in that, also comprise: a memory circuit, it is connected mutually with described data processing circuit and described open detection circuit respectively, when having a power failure, with the energy value of described data processing circuit accumulation, store in the described memory circuit; When restoring electricity, read the energy value of storing in the described memory circuit by described data processing circuit; And described memory circuit writes down an event information when unnormal unlocking takes place.
24, according to claim 4,11,14 or 19 described modular electric energy metering machines, it is characterized in that, also comprise a relay or isolating switch, when breaking down situation, cut off line of electric force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200710053580 CN101413966B (en) | 2007-10-17 | 2007-10-17 | Modular electric energy metering machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710053580 CN101413966B (en) | 2007-10-17 | 2007-10-17 | Modular electric energy metering machine |
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| Publication Number | Publication Date |
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| CN101413966A true CN101413966A (en) | 2009-04-22 |
| CN101413966B CN101413966B (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200710053580 Expired - Fee Related CN101413966B (en) | 2007-10-17 | 2007-10-17 | Modular electric energy metering machine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103124911A (en) * | 2010-08-04 | 2013-05-29 | 胜赛斯思百克特姆公司 | Method and system of measuring current in an electric meter |
| CN104142414A (en) * | 2014-08-11 | 2014-11-12 | 无锡锐泰节能系统科学有限公司 | Detachable combined electricity meter |
| CN105047178A (en) * | 2015-08-19 | 2015-11-11 | 山东大学 | Device and method for saving electricity of display screen based on ultrasonic detection and brightness synchronization tracking |
| CN115078823A (en) * | 2022-07-25 | 2022-09-20 | 伏诺瓦(天津)科技有限公司 | Method and device for improving electric energy metering precision |
| TWI789221B (en) * | 2022-01-25 | 2023-01-01 | 大陸商宸展光電(廈門)股份有限公司 | Power management device, power management method and power management system |
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| CN2134658Y (en) * | 1992-09-01 | 1993-05-26 | 王传武 | Watt-hour meter |
| CN2350771Y (en) * | 1998-10-16 | 1999-11-24 | 苏州供电局 | Inserted electric energy meter |
| CN2553549Y (en) * | 2002-06-12 | 2003-05-28 | 杨宗耀 | Electricity-stealing-utilization-preventing intelligent controller for power distribution metering box and cabinet |
| CN1215337C (en) * | 2002-12-18 | 2005-08-17 | 王荣安 | Intelligent fraudulent use prevention electric energy measuring method and device thereof |
| CN100378461C (en) * | 2005-03-25 | 2008-04-02 | 杭州利尔达单片机技术有限公司 | Single phase electric larceny preventing electricity meter and method for preventing electric larceny |
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|---|---|---|---|---|
| CN103124911A (en) * | 2010-08-04 | 2013-05-29 | 胜赛斯思百克特姆公司 | Method and system of measuring current in an electric meter |
| CN103124911B (en) * | 2010-08-04 | 2015-09-30 | 胜赛斯思百克特姆公司 | Measure the method and system of electric current in ammeter |
| CN104142414A (en) * | 2014-08-11 | 2014-11-12 | 无锡锐泰节能系统科学有限公司 | Detachable combined electricity meter |
| CN105047178A (en) * | 2015-08-19 | 2015-11-11 | 山东大学 | Device and method for saving electricity of display screen based on ultrasonic detection and brightness synchronization tracking |
| CN105047178B (en) * | 2015-08-19 | 2017-10-03 | 山东大学 | The display screen battery saving arrangement and method tracked based on ultrasound detection and brilliant synchrotron |
| TWI789221B (en) * | 2022-01-25 | 2023-01-01 | 大陸商宸展光電(廈門)股份有限公司 | Power management device, power management method and power management system |
| CN115078823A (en) * | 2022-07-25 | 2022-09-20 | 伏诺瓦(天津)科技有限公司 | Method and device for improving electric energy metering precision |
| CN116027103A (en) * | 2023-03-29 | 2023-04-28 | 荣耀终端有限公司 | Power consumption detection circuit, power consumption detection chip and terminal equipment |
| CN116027103B (en) * | 2023-03-29 | 2023-09-15 | 荣耀终端有限公司 | Power consumption detection circuit, power consumption detection chip and terminal equipment |
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| CN101413966B (en) | 2012-12-19 |
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Application publication date: 20090422 Assignee: Hubei Shengjia Electrical Equipment Co., Ltd. Assignor: Wan Jiasheng Contract record no.: 2014420000149 Denomination of invention: Modular electric energy metering machine Granted publication date: 20121219 License type: Exclusive License Record date: 20140717 |
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