CN201191305Y - Power use management circuit having self-checking function - Google Patents
Power use management circuit having self-checking function Download PDFInfo
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- CN201191305Y CN201191305Y CNU200820067262XU CN200820067262U CN201191305Y CN 201191305 Y CN201191305 Y CN 201191305Y CN U200820067262X U CNU200820067262X U CN U200820067262XU CN 200820067262 U CN200820067262 U CN 200820067262U CN 201191305 Y CN201191305 Y CN 201191305Y
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Abstract
The utility model relates to a power consumption management circuit with a self-checking function, which comprises a circuit substrate and a circuit of a power consumption management device body, wherein the circuit of a power consumption management device body is disposed on the circuit substrate for realizing the power metering and/or counting function of users. The power consumption management circuit further comprises a self-checking unit which is connected with the circuit of the power consumption management device body for confirming types of basic failures occurring in the circuit of the power consumption management device body.
Description
Technical field
The utility model relates to a kind of management of power use device, particularly be a kind of management of power use device with self-checking function.
Background technology
Along with expanding economy, the national economy every field improves constantly the dependence of electric power energy, in order to realize effectively management to the electric power electricity consumption is on-the-spot, thereby management of power use device arises at the historic moment, and becomes a focus direction of constantly bringing forth new ideas in the power technology field.For existing management of power use device, it all will comprise substantially: ic for energy metering, electric energy counting circuit and power circuit, one of these three main functions circuit or combination.
One of above-mentioned functions circuit of above-mentioned for some reason management of power use device correspondence, in case break down, electric administrative department is difficult to know the concrete reason of fault, carry out the manual testing thereby require a great deal of time, even need change whole management of power use device, cause very big waste like this, therefore suddenly wait to develop a kind of management of power use device with fault self-checking, the utility model creator, through studying this technology that obtained for a long time, in order to distinguish with existing management of power use device, we are referred to as it management of power use device body circuit in this application for existing management of power use device, it is emphasized that the management of power use device that we are alleged, not only be confined to electric energy meter, the combination ammeter, it also should comprise other, and all need metering, the management of power use device of counting and power supply supply.
See also shown in Figure 1, its in the existing management of power use device body circuit with the corresponding structure function sketch of above-mentioned functions circuit, the functional circuit that described management of power use device body circuit is corresponding with the above-mentioned functions circuit is: power circuit, metering circuit and counting circuit, wherein
Described power circuit 1 comprises: a power-switching circuit 11, and it carries out transformation with power voltage line handles, in order to providing power for operation with electric device;
Described metering circuit 2 comprises:
One line of electric force input-output unit 21, it comprises at least: 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 22 calculates the meritorious/reactive energy value via described phase line incoming end and zero line incoming end;
One pulse signal output unit 23, the energy value that described electric energy metrical unit 22 is calculated is converted into the pulse signal output that is directly proportional with described energy value;
Described counting circuit 3 comprises:
One data processing circuit 31, its data-signal of output that receives the pulse signal of described pulse signal output unit 23 outputs or described metering circuit is (under some situation, described metering circuit has the function of accumulative total electric energy, therefore itself if outputting data signals just can), carry out the energy value stored counts;
A described data processing circuit 31 and a processor 4 link together;
In order to realize the control to the thematic function circuit, described processor 4 is absolutely necessary.
Existing management of power use device body circuit has its basic fault of above-mentioned functional circuit and is divided into: the metering circuit of the power circuit of management of power use device body circuit, management of power use device body circuit or the counting circuit of management of power use device body circuit break down, and how can in time find when a certain fault produces; How about carrying out corresponding fault actions after discovery, should be that those skilled in the art want to solve also open question always.
Given this, the utility model creator through research and practice for a long time, adopts a kind of self-monitoring thought finally, has obtained this creation.
Summary of the invention
The purpose of this utility model is, provides a kind of management of power use circuit with self-checking function, in order to overcome above-mentioned defective.
For achieving the above object, the technical solution adopted in the utility model is, a kind of management of power use circuit with self-checking function is provided, and it comprises: a circuit substrate;
One management of power use device body circuit, it is arranged on the described circuit substrate, in order to realize the electricity consumption metering and/or the tally function of electricity consumer, it is characterized in that, also comprises:
One self-test unit, it is connected with described fulgurite reason device body circuit, the kind of basic fault occurs in order to confirm described management of power use device body circuit.
Preferable, described management of power use device body circuit comprises: power circuit, metering circuit and counting circuit, wherein,
Described power circuit comprises: a power-switching circuit, and it carries out transformation with power voltage line handles, in order to providing power for operation with electric device;
Described metering circuit comprises:
One line of electric force input-output unit, it comprises at least: 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, it is connected with described phase line incoming end and zero line access end line, calculates the meritorious/reactive energy value via described phase line incoming end and zero line incoming end;
One pulse signal output unit, it is connected with described electric energy metrical unit, and 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;
Described counting circuit comprises:
One data processing circuit, it is connected with described pulse signal output unit respectively, and the data-signal that it receives the pulse signal of described pulse signal output unit output carries out the energy value stored counts;
A described data processing circuit and a processor link together;
Preferable, described self-test unit comprises: a function of measuring self-checking circuit carries out fault detect in order to the electricity consumption function of measuring ruuning situation to described management of power use device; It comprises:
Whether one current monitoring circuit has electric current to flow through in order to the phase line input end of monitoring described management of power use device body circuit;
One pulse observation circuit, its output terminal with described pulse signal output unit is connected, and in order to monitor described pulse signal output circuit whether pulse signal output is arranged;
One monitoring decision circuitry, it is connected with described pulse observation circuit with described current monitoring electricity respectively, judges whether described metering circuit breaks down;
Preferable, described current monitoring circuit comprises:
One current transformer, it is arranged on the described phase line;
One first comparer, one input end is provided with a reference voltage, and its other end is connected with the output terminal of described current transformer, exports one first status signal;
Described pulse observation circuit comprises:
One second comparer, one input end is provided with a reference voltage, and its other end is connected with the output terminal of described pulse signal output unit, exports one second status signal;
Described monitoring decision circuitry is described processor, and 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;
Preferable, also comprise: first current rectifying and wave filtering circuit, it is arranged between described current transformer and described first comparer;
One delay circuit is arranged between the output terminal and described second comparer of described pulse signal output unit;
Preferable, described self-test unit also comprises: a tally function self-checking circuit carries out fault detect in order to the electricity consumption tally function ruuning situation to described management of power use device; For an electronic counting, described tally function self-checking circuit is described processor, is connected with described data processing circuit;
Preferable, described self-test unit also comprises: a tally function self-checking circuit carries out fault detect in order to the electricity consumption tally function ruuning situation to described management of power use device; For mechanical count, described tally function self-checking circuit comprises: pulsed signal circuit, mechanical action observation circuit and described processor, and wherein, described pulsed signal circuit is connected with described pulse signal output unit; Described mechanical action observation circuit detects the rotation of mechanical gear, and is processed into corresponding simulating signal; Described processor is connected with described mechanical action observation circuit with described pulsed signal circuit respectively, receives two kinds of simulating signals and handles, and make whether producing failure judgment;
Preferable, described pulsed signal circuit comprises: a photoelectrical coupler and a comparer, described pulse signal output unit links to each other with the input end of described photoelectrical coupler, one output terminal of described photoelectrical coupler and the in-phase end of described comparer are connected, the backward end of described comparer obtains a reference voltage, and its output terminal links to each other with described processor one input pin;
Preferable, described mechanical action observation circuit comprises: a light emitting diode and a photoelectric receiving tube lay respectively at the both sides of mechanical counting device one gear; Also comprise a comparer, its in-phase end links to each other with the output terminal of described photoelectric receiving tube, and the backward end of described comparer obtains a reference voltage, and its output terminal links to each other with described processor one input pin;
Preferable, described pulsed signal circuit comprises: a comparer, described pulse signal output unit output terminal is connected with the in-phase end of described comparer, and the backward end of described comparer obtains a reference voltage, and its output terminal links to each other with described processor one input pin;
Preferable, it comprises described power-switching circuit: a transformer, and the input end of described transformer is connected with described line of electric force;
One rectification circuit, it is connected with the output terminal of described transformer;
One filtering circuit, it is connected with described rectification circuit;
One mu balanced circuit, it links to each other with the output terminal of described filtering circuit, to powering with electric device of described management of power use device body circuit;
Preferable, described self-test unit also comprises: a power circuit self-test unit, and it comprises: described processor, it links to each other with the output terminal of described filtering circuit;
One power voltage line Acquisition Circuit, it comprises: an ac/dc conversion chip and a filter regulator circuit, described ac/dc conversion chip obtains power voltage line, and described filter regulator circuit is connected with an input end of described processor;
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;
Preferable, described self-test unit also comprises: a standby power supply self-test unit comprises described processor, it is connected with described processor by a diode;
Preferable, also comprise: it is connected a fault actions unit with described processor, described fault actions unit is the pilot lamp of one group of different colours, indicates according to different faults: power down mode, power circuit fault, metering circuit fault, counting circuit fault and standby power supply break down;
Preferable, also comprise: a subscribers feeder cuts off circuit, and wherein, it is a relay or isolating switch that described subscribers feeder cuts off circuit, and it is arranged on the described phase alignment circuit.
The beneficial effects of the utility model are compared with the prior art, effectively judge the abort situation of management of power use device, improve the efficient of maintenance and the reaction velocity of maintenance, thereby avoid the loss of electric-power metering.
Description of drawings
Fig. 1 has the structure function sketch of above-mentioned functions circuit for existing management of power use device body circuit;
Fig. 2 A is the structure embodiment one function sketch that the utlity model has the management of power use circuit of self-checking function;
Fig. 2 B is the structure embodiment two function sketches that the utlity model has the management of power use circuit of self-checking function;
Fig. 3 A is the function sketch of function of measuring self-checking circuit that the utlity model has the management of power use circuit of self-checking function;
Fig. 3 B is the circuit diagram of function of measuring self-checking circuit that the utlity model has the management of power use circuit of self-checking function;
Fig. 4 A is the function sketch of electronic counting function self-checking circuit that the utlity model has the management of power use circuit of self-checking function;
Fig. 4 B is the circuit enforcement figure one of mechanical count function self-checking circuit that the utlity model has the management of power use circuit of self-checking function;
Fig. 4 C is the circuit enforcement figure two of mechanical count function self-checking circuit that the utlity model has the management of power use circuit of self-checking function;
Fig. 5 is the circuit diagram of power supply function self-checking circuit that the utlity model has the management of power use circuit of self-checking function.
Embodiment
In the middle of this instructions and claim, used some vocabulary to censure specific assembly, and the person with usual knowledge in their respective areas should understand, hardware manufacturer may be called same assembly with different nouns, this instructions does not come as the mode of distinguishing assembly with the difference of title with claim, but come as the criterion of distinguishing with the difference of assembly on function, be an open term mentioned " comprising " in the middle of instructions and claims in the whole text, so should be construed to " include but be not limited to ", in addition, " connection " speech is to comprise any direct and indirect means that are electrically connected at this, therefore, if describing one first device in the literary composition is connected with one second device, then represent described first device can directly be electrically connected, or be electrically connected to described second device indirectly by other device or connection means at described second device; At " processor " that occur in the whole text, the logical device MCU (microprocessor) that it refers to have processing capacity can be single-chip microcomputer, CPU or FPGA (Field Programmable Gate Array) control etc.
The utility model relates to a kind of circuit from the correlation technique that detects and the back action of breaking down is carried out, and this instructions will be described some about using the embodiment of management of power use device of the present utility model, usually know that the knowledgeable should be described recognize that the utility model can be applied in various types of electronic packages as water meter or gas meter but in correlative technology field, have, be not limited in the following description specific embodiment that is provided or the ad hoc approach of realizing the technical characterictic of these specific embodiments.
Below in conjunction with accompanying drawing, be described in more detail with other technical characterictic and advantage the utility model is above-mentioned.
See also shown in Fig. 2 A, it is the structure embodiment one function sketch that the utlity model has the management of power use circuit of self-checking function, it is except the management of power use device body circuit structure shown in Fig. 1, also comprise: a self-test unit 5, in order to confirm that the kind of basic fault appears in described management of power use device body circuit, and the trigger pip of generation corresponding action and indication, described basic fault is divided into: the power circuit of management of power use device body circuit, the counting circuit of the metering circuit of management of power use device body circuit or management of power use device body circuit breaks down, because we adopt the assembling mode of circuitization to realize the function of management of power use device body circuit, therefore in case determine concrete abort situation, with regard to energy instantaneously changing failed component, so corresponding design has function of measuring self-checking circuit 51, tally function self-checking circuit 52 or power supply function self-test unit 53, by obtaining the operation information of each detected object, carry out corresponding judgment by described processor 4, obtain the conclusion whether detected object breaks down, wherein be directed to power fail, increased a standby power supply 13 and charging circuit 12, and be directed to that standby power supply breaks down and the standby power supply self-test unit 54 that is provided with.
See also shown in Fig. 2 B, it is the structure embodiment one function sketch that the utlity model has the management of power use circuit of self-checking function, be with the difference of above-mentioned Fig. 2 A, present embodiment has increased new function, above-mentioned self check is a main body, but the detection whether operation troubles only takes place that he provides, can not make corresponding postorder and handle action, the management of power use circuit that for this reason the utlity model has self-checking function also provides a fault actions unit 6, it is connected with described processor 4, when determining that through self-test unit 5 management of power use device body circuit breaks down, trigger described fault actions unit 6 and produce action, described trouble unit can be the pilot lamp of one group of five different colours being provided with on the management of power use device body circuit, shows according to the different faults type: power down mode, the power circuit fault, metering circuit fault and counting circuit fault;
Can also comprise: an acoustic-optic alarm and/or a subscribers feeder cut off circuit, wherein, it is a relay or isolating switch that described subscribers feeder cuts off circuit, it is arranged on the described phase alignment circuit, when described power circuit fault, metering circuit fault or counting circuit fault occurring, cut off user's supply line; Prevent to bring loss to country, also can remind electricity consumer to note simultaneously because the fault that management of power use device body circuit occurs causes power loss; Certainly in order to realize long-range control and management, also should comprise: a communicating circuit, failure message is sent to the management control center of far-end and/or user's information receiving terminal, realize failure monitoring; Described communication unit transmits one of them mode with carrier-wave transmission, Ethernet transmission, PSNT Network Transmission, GPRS transmission, GSM transmission or CDMA and transmits, the grafting of these technology and to divert from one use to another be creative, and the realization of itself has been given unnecessary details with regard to not doing here, those skilled in the art can realize.
See also shown in Fig. 3 A, it is the function sketch of function of measuring self-checking circuit that the utlity model has the management of power use circuit of self-checking function, the function of measuring self-checking circuit 51 described in the figure, and it comprises:
Whether one current monitoring circuit 511 has electric current to flow through in order to the phase line input end of monitoring described management of power use device body circuit;
Whether one pulse observation circuit 512 has pulse signal output in order to monitor described pulse signal output unit 23;
One monitoring decision circuitry 513, 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 described metering circuit breaks down; Wherein said monitoring decision circuitry 513 is described processor 4 just; When judging that by described monitoring decision circuitry 513 described metering circuit breaks down, will trigger described fault actions unit and produce and move, described trouble unit can be the pilot lamp 64 of certain color of being provided with on the body;
Can also comprise: an acoustic-optic alarm 61 and/or a subscribers feeder cut off circuit 62, wherein, it is a relay or isolating switch that described subscribers feeder cuts off circuit 62, and it is arranged on the described phase alignment circuit, when described metering circuit fault occurring, cut off user's supply line; Prevent to bring loss to country, also can remind electricity consumer to note simultaneously because management of power use device body circuit when breaking down, causes power loss; Certainly in order to realize long-range control and management, also should comprise: a communicating circuit 63, failure message is sent to the management control center of far-end and/or user's information receiving terminal, realize failure monitoring.
See also shown in Fig. 3 B, it is the circuit diagram of function of measuring self-checking circuit that the utlity model has the management of power use circuit of self-checking function, described current monitoring circuit is corresponding to the C2 among this figure, it is to obtain voltage by a current transformer L1 from phase line, the output terminal of described current transformer L1 links to each other with the input end of the current rectifying and wave filtering circuit of being made up of electric capacity c1 and diode D1, the voltage that obtains links to each other with the in-phase input end of one first comparer IC1, the end of oppisite phase of the described first comparer IC1 is a reference voltage, can regulate by slide rheostat w1; One input port of the output terminal of the described first comparer IC1 and described processor MCU is connected;
Described pulse observation circuit is the C1 among the figure, directly be arranged at the in-phase input end of one second comparer IC2 by the output signal of described pulse signal output unit, the inverting input of the described second comparer IC2 is provided with reference voltage, and the described second comparer IC2 output terminal is connected with another input port of described processor 4; Need to prove because the output signal of pulse signal output unit 23 is a pulse signal, therefore need add delay circuit at described processor 4 front ends, described delay circuit is made up of electric capacity c2 and resistance R 3, can certainly in described processor, realize metastable decision signal input by built-in delay procedure.
When first comparer IC1 output be low-potential signal the time, then judge power down mode at this moment; When the output terminal of the described first comparer IC2 is that the output terminal of the described second comparer IC2 of noble potential proves that then described metering circuit breaks down when being electronegative potential, the described fault actions of relative trigger unit produces action, in order to the sign no-load condition or metering circuit breaks down.
Because for the tally function that exists in the management of power use, be divided into generally that electronic counting is another kind of to be mechanical count, wherein electronic counting is that the metrical pulse of his-and-hers watches requisition electric weight adds up; And described mechanical count, then be to rotate by the step motor drive gear to characterize electricity consumption accumulative total, if therefore the tally function that exists in the management of power use is carried out fault detect, then certainly exist two kinds of self test modes, wherein a kind of is that electronic counting function self check another kind is to the self check of mechanical count function.
See also shown in Fig. 4 A, it is the function sketch of electronic counting function self-checking circuit that the utlity model has the management of power use circuit of self-checking function; Described management of power use device electronic counting function self-checking circuit is described processor 4 just, described data processing circuit 31 is connected with described processor 4, there is signal to export described data processing circuit 31 at described metering circuit 2, also can deliver to simultaneously an input end of described processor 4, and the no signal output when energy value accumulative total of described data processing circuit 31, be that described processor 4 can't picked up signal, judge that then described counting circuit has fault, then will deposit the accumulative total of the energy value in the current data treatment circuit 31 in a memory circuit 33 this moment, it will be from newly adding up on the basis of the energy value that is stored in described memory circuit 31 after changing described counting circuit.
See also shown in Fig. 4 B, it is the circuit enforcement figure one of mechanical count function self-checking circuit that the utlity model has the management of power use circuit of self-checking function; Described mechanical count function self-checking circuit comprises: pulsed signal circuit, mechanical action observation circuit and described processor, wherein, described pulsed signal circuit obtains the pulse signal that described pulse signal output unit sends, and is processed into corresponding simulating signal; Described mechanical action observation circuit detects the rotation of mechanical gear, and is processed into corresponding simulating signal; Described processor receives two kinds of simulating signals and handles, and makes whether producing failure judgment; Wherein, described pulsed signal circuit comprises: a comparer 1IC2, described pulse signal output unit output terminal is connected with the in-phase end of described comparer, the backward end of described comparer 1IC2 obtains a reference voltage, described reference voltage is actually the dividing potential drop between the resistance 1R5 of 1R4 and series connection with it, and its output terminal links to each other with described processor MCU one input pin; Described mechanical action observation circuit comprises: a LED and a photoelectric receiving tube Q lay respectively at the both sides of mechanical counting device one gear, the light of described LED is owing to described gear blocks, accumulation along with electricity consumption, described gear rotates under the driving of stepper motor, thereby makes being received by described photoelectric receiving tube Q of the photoperiodism of sending of described LED; Described LED and photoelectric receiving tube Q link together by resistance IR1,1R2, both output head groundings, also comprise a comparer 1IC1, its in-phase end links to each other with the output terminal of described photoelectric receiving tube Q, the backward end of described comparer 1IC1 obtains a reference voltage (described reference voltage in fact also is the dividing potential drop between the resistance 1R5 of resistance 1R4 and series connection with it), and its output terminal links to each other with described processor MCU one input pin; Because the pulse of pulse output unit output is not successional, thereby the accumulative total that causes counting neither be continuous, but both should be synchronous, therefore need corresponding delay procedure in described processor MCU inside, when described pulsed signal circuit, mechanical action observation circuit all have or all do not have signal to be input in the described processor MCU, non-fault then is described, when described pulsed signal circuit and mechanical action observation circuit have only one to have signal to be input in the described processor MCU, illustrate that then the mechanical count function breaks down.
Please Fig. 4 C be the circuit enforcement figure two of mechanical count function self-checking circuit that the utlity model has the management of power use circuit of self-checking function; It is that with top difference described pulsed signal circuit comprises: its input end of photoelectrical coupler 1IC3 links to each other with the input end of described photoelectrical coupler, the output terminal of described photoelectrical coupler 1IC3 is connected with the in-phase end of described comparer 1IC2, the backward end of described comparer 1IC2 obtains a reference voltage, its output terminal links to each other with described processor MCU one input pin, other is identical with Fig. 4 B, has just repeated no more.
See also shown in Figure 5ly, it is the circuit diagram of power supply function self-checking circuit that the utlity model has the management of power use circuit of self-checking function; What at first need to further specify is that it comprises for the power-switching circuit in the existing management of power use device body circuit: a transformer T, and the input end of described transformer is connected with zero line N with phase line L in the line of electric force, and civil power is carried out the transformation processing;
One rectification circuit D1-D4, its input end is connected with the output terminal of described transformer T;
One filtering circuit is by resistance R 4, and R5 and electric capacity c3 form, and described capacitor C 3 is connected with the positive pole of described rectification circuit D1-D4, and the negative pole of described rectification circuit D1-D4 is connected with ground;
One mu balanced circuit, be a voltage stabilizing chip IC 3 its link to each other with the output terminal of resistance R 4 in the described filtering circuit, to the electricity consumption device power supply of described management of power use device body circuit;
Described management of power use device power supply function self-test unit, it comprises: described processor MCU, resistance R 4 in one output terminal and the described filtering circuit, the dividing potential drop node between the R5 links to each other; One power voltage line Acquisition Circuit, it comprises: an ac/dc conversion chip IC4 and a filter regulator circuit, described filter regulator circuit is by resistance R 6, electric capacity c4, c5 and stabilivolt DW form, after described ac/dc conversion chip IC4 obtains power voltage line, be connected with described processor MCU by described filter regulator circuit, when described processor MCU obtains the signal that the power voltage line Acquisition Circuit provides, and described resistance R4, no signal output judges that then power circuit breaks down between the dividing potential drop node between the R5; When described processor MCU does not obtain resistance R 4 in power voltage line Acquisition Circuit and the described filtering circuit, the signal that the dividing potential drop node between the R5 provides then is power down mode; For can continue to use to maintenance bring the time and give described fault actions unit 6 and still need work provide electric power with electric device, also should comprise: a standby power supply soc, it can be a rechargeable battery, it links to each other with described processor MCU by a diode D5, when power circuit broke down, described processor starts described standby power supply soc provided power for operation; Also need a charging circuit (not shown), it is connected with the output terminal of described power-switching circuit, and to described standby power supply power supply; Described standby power supply self-test unit 54 comprises described processor MCU, it is connected with described processor MCU by described diode D5, after voltage that described processor MCU detects described standby power supply soc is lower than a certain default voltage, starts described charging circuit and charge to described standby power supply soc; After charging sometime, after the voltage that described processor MCU detects described standby power supply soc still is lower than a certain default voltage, judge that then standby power supply breaks down.
The above only is preferred embodiment of the present utility model, only is illustrative for the utility model, and nonrestrictive.Those skilled in the art is understood, and can carry out many changes to it in the spirit and scope that the utility model claim is limited, revise, even equivalence, but all will fall in the protection domain of the present utility model.
Claims (16)
1, a kind of management of power use circuit with self-checking function, it comprises: a circuit substrate;
One management of power use device body circuit, it is arranged on the described circuit substrate, in order to realize the electricity consumption metering and/or the tally function of electricity consumer, it is characterized in that, also comprises:
One self-test unit, it is connected with described fulgurite reason device body circuit, the kind of basic fault occurs in order to confirm described management of power use device body circuit.
2, the management of power use circuit with self-checking function according to claim 1 is characterized in that, described management of power use device body circuit comprises: power circuit, metering circuit and counting circuit, wherein,
Described power circuit comprises: a power-switching circuit, and it carries out transformation with power voltage line handles, in order to providing power for operation with electric device;
Described metering circuit comprises:
One line of electric force input-output unit, it comprises at least: 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, it is connected with described phase line incoming end and zero line access end line, calculates the meritorious/reactive energy value via described phase line incoming end and zero line incoming end;
One pulse signal output unit, it is connected with described electric energy metrical unit, and 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;
Described counting circuit comprises:
One data processing circuit, it is connected with described pulse signal output unit respectively, and the data-signal that it receives the pulse signal of described pulse signal output unit output carries out the energy value stored counts;
A described data processing circuit and a processor link together.
3, the management of power use circuit with self-checking function according to claim 1 is characterized in that described self-test unit comprises: a function of measuring self-checking circuit carries out fault detect in order to the electricity consumption function of measuring ruuning situation to described management of power use device; It comprises:
Whether one current monitoring circuit has electric current to flow through in order to the phase line input end of monitoring described management of power use device body circuit;
One pulse observation circuit, its output terminal with described pulse signal output unit is connected, and in order to monitor described pulse signal output circuit whether pulse signal output is arranged;
One monitoring decision circuitry, it is connected with described pulse observation circuit with described current monitoring electricity respectively, judges whether described metering circuit breaks down.
4, the management of power use circuit with self-checking function according to claim 3 is characterized in that described current monitoring circuit comprises:
One current transformer, it is arranged on the described phase line;
One first comparer, one input end is provided with a reference voltage, and its other end is connected with the output terminal of described current transformer, exports one first status signal;
Described pulse observation circuit comprises:
One second comparer, one input end is provided with a reference voltage, and its other end is connected with the output terminal of described pulse signal output unit, exports one second status signal;
Described monitoring decision circuitry is described processor, and 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.
5, the management of power use circuit with self-checking function according to claim 4 is characterized in that, also comprises: first current rectifying and wave filtering circuit, and it is arranged between described current transformer and described first comparer;
One delay circuit is arranged between the output terminal and described second comparer of described pulse signal output unit.
6, the management of power use circuit with self-checking function according to claim 1 is characterized in that described self-test unit also comprises: a tally function self-checking circuit carries out fault detect in order to the electricity consumption tally function ruuning situation to described management of power use device; For an electronic counting, described tally function self-checking circuit is described processor, is connected with described data processing circuit.
7, the management of power use circuit with self-checking function according to claim 1 is characterized in that described self-test unit also comprises: a tally function self-checking circuit carries out fault detect in order to the electricity consumption tally function ruuning situation to described management of power use device; For mechanical count, described tally function self-checking circuit comprises: pulsed signal circuit, mechanical action observation circuit and described processor, and wherein, described pulsed signal circuit is connected with described pulse signal output unit; Described mechanical action observation circuit detects the rotation of mechanical gear, and is processed into corresponding simulating signal; Described processor is connected with described mechanical action observation circuit with described pulsed signal circuit respectively, receives two kinds of simulating signals and handles, and make whether producing failure judgment.
8, the management of power use circuit with self-checking function according to claim 7, it is characterized in that, described pulsed signal circuit comprises: a photoelectrical coupler and a comparer, described pulse signal output unit links to each other with the input end of described photoelectrical coupler, one output terminal of described photoelectrical coupler and the in-phase end of described comparer are connected, the backward end of described comparer obtains a reference voltage, and its output terminal links to each other with described processor one input pin.
9, the management of power use circuit with self-checking function according to claim 7 is characterized in that, described mechanical action observation circuit comprises: a light emitting diode and a photoelectric receiving tube lay respectively at the both sides of mechanical counting device one gear; Also comprise a comparer, its in-phase end links to each other with the output terminal of described photoelectric receiving tube, and the backward end of described comparer obtains a reference voltage, and its output terminal links to each other with described processor one input pin.
10, the management of power use circuit with self-checking function according to claim 7, it is characterized in that, described pulsed signal circuit comprises: a comparer, described pulse signal output unit output terminal is connected with the in-phase end of described comparer, the backward end of described comparer obtains a reference voltage, and its output terminal links to each other with described processor one input pin.
11, the management of power use circuit with self-checking function according to claim 2 is characterized in that it comprises described power-switching circuit: a transformer, and the input end of described transformer is connected with described line of electric force;
One rectification circuit, it is connected with the output terminal of described transformer;
One filtering circuit, it is connected with described rectification circuit;
One mu balanced circuit, it links to each other with the output terminal of described filtering circuit, to powering with electric device of described management of power use device body circuit.
12, the management of power use circuit with self-checking function according to claim 1 is characterized in that described self-test unit also comprises: a power circuit self-test unit, and it comprises: described processor, it links to each other with the output terminal of described filtering circuit;
One power voltage line Acquisition Circuit, it comprises: an ac/dc conversion chip and a filter regulator circuit, described ac/dc conversion chip obtains power voltage line, and described filter regulator circuit is connected with an input end of described processor.
13, the management of power use circuit with self-checking function according to claim 11 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.
14, the management of power use circuit with self-checking function according to claim 12, it is characterized in that described self-test unit also comprises: a standby power supply self-test unit comprises described processor, it is connected with described processor by a diode.
15, according to claim 1,3,6,7,12 or 14 wherein any described management of power use circuit with self-checking function, it is characterized in that, also comprise: it is connected a fault actions unit with described processor, described fault actions unit is the pilot lamp of one group of different colours, indicates according to different faults: power down mode, power circuit fault, metering circuit fault, counting circuit fault and standby power supply break down.
16, the management of power use circuit with self-checking function according to claim 15 is characterized in that, also comprises: a subscribers feeder cuts off circuit, and wherein, it is a relay or isolating switch that described subscribers feeder cuts off circuit, and it is arranged on the described phase alignment circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820067262XU CN201191305Y (en) | 2008-05-20 | 2008-05-20 | Power use management circuit having self-checking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820067262XU CN201191305Y (en) | 2008-05-20 | 2008-05-20 | Power use management circuit having self-checking function |
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| Publication Number | Publication Date |
|---|---|
| CN201191305Y true CN201191305Y (en) | 2009-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820067262XU Expired - Fee Related CN201191305Y (en) | 2008-05-20 | 2008-05-20 | Power use management circuit having self-checking function |
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| Country | Link |
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| CN (1) | CN201191305Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323565A (en) * | 2011-08-09 | 2012-01-18 | 华立仪表集团股份有限公司 | A kind of electric energy measurement instrument |
| CN103995212A (en) * | 2014-06-03 | 2014-08-20 | 北京翠祥电器元件有限公司 | Disconnection monitoring system and method of electric energy metering device |
| CN109188338A (en) * | 2018-09-05 | 2019-01-11 | 国网山东省电力公司潍坊供电公司 | A kind of electric energy collect and acquisition failure protecting device |
-
2008
- 2008-05-20 CN CNU200820067262XU patent/CN201191305Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323565A (en) * | 2011-08-09 | 2012-01-18 | 华立仪表集团股份有限公司 | A kind of electric energy measurement instrument |
| CN102323565B (en) * | 2011-08-09 | 2013-10-16 | 华立仪表集团股份有限公司 | Electric energy metering instrument |
| CN103995212A (en) * | 2014-06-03 | 2014-08-20 | 北京翠祥电器元件有限公司 | Disconnection monitoring system and method of electric energy metering device |
| CN103995212B (en) * | 2014-06-03 | 2017-02-01 | 北京翠祥电器元件有限公司 | Disconnection monitoring system and method of electric energy metering device |
| CN109188338A (en) * | 2018-09-05 | 2019-01-11 | 国网山东省电力公司潍坊供电公司 | A kind of electric energy collect and acquisition failure protecting device |
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