TW536627B - Current sensor - Google Patents

Abstract

A fiscal electricity meter is described for measuring the energy supplied to a load. The load current flows through the primary winding of a transformer and induces an EMF indicative of the current flowing in the secondary winding. The secondary winding comprises a sense coil, arranged to couple more strongly to the primary, and a cancellation coil which have equal and opposite turns area products so as to provide a null response to extraneous magnetic fields. The coils are arranged so that their magnetic axis are co-located and aligned together so that they also provide a null response to extraneous magnetic fields having a field gradient.

Description

536627 V. Description of the invention (1) Background of the invention

>;) L L ^ The present invention relates to a device capable of measuring snow in a conductor. d + once more = indeed, but not limited to, the present invention relates to the formation of an AC current, which is a current sensor of a meter in a bag, which is used for energy supplied by a business company to a business place or a residence. There are many different known methods for measuring current. One method is to place a resistor in the current path to generate a snow voltage across this resistor, where this resistor is & However, this method is damaged by the ohmic heating of the shunt resistor and the lack of DC isolation between the measurement < motor and the generated voltage. Electricity, " ^: The method of 2 current is to detect and measure the through-conductor. A method usually has an advantage, that is, to provide an electronic barrier between the measured electrical two :. This magnetic field will come out of the Hoggs, and the Hall sensor will make the two i intersect: the expensive sensor will be damaged by the related temperature, and the air gap in the case of US Patent No. 5,521,572 is separated by two An empty t ^ 2 mJ-hole coupling current transformer of a ferromagnetic pole piece. However, because its excess sensitivity to externally generated magnetic field gradients, p > flu detectors are not accurate enough for some applications. :: Canton 736,846 discloses a secondary air current transformer that monitors the load current of audio amplifiers. However, this current transformer is also susceptible to the milk coupling port, and therefore it is not accurate enough in the use of power statistics. Gradient

536627 V. Description of the invention (2) Therefore, the above two conventional examples of electro-transformer sensors will be susceptible to flowing through the wires located adjacent to the current sensor when the current is at the same frequency as the sensed current, resulting in The different external magnetic fields (because the magnetic field "intensity varies with space"). Here, the current sensor is part of the electric meter, and it is particularly important that the meter is not excessively affected by an external magnetic field. There are many published specifications on the implementation of electric meters, such as "Electricity Metering" of ANS I C1 2- 1 9 9 3 and IEC 1,036 republished in 1 996-10. More specifically, ANSI C12 · 16 & quot "Solid-state electric meter" external magnetic field test report number 1 6 之 # and 1 0 · 2 · 4 A, clearly explaining the degree of magnetic interference of the electric meter. That report stipulated that a current of 3 A flows through the meter, and once the above measurement is set at one of the three specified positions in a 1.8 beat loop, the current of 100 amps (100A) (the same frequency as the current of the meter And phase) flowing through this loop should not change the meter reading by more than 1%. -The Qiyu Flu Detector has a low cost and provides isolation of the measured current. "It is suitable for modern electronic manufacturing methods. It should not be too sensitive. Into the bottle?" From (i) such as the generation of a magnetic field, for example, Soil /. M W PI ^ W Return (far magnetic field) magnetic source;% C 11) The generation of different magnetic fields, like the magnetic field generated by 1, + j. For example, the large current (111) flowing near the conductor is as specified in ANSI specifications. According to the present invention, the rate of change of the power supply in the + bouncer and the load conductor is provided in accordance with the present invention:-the current sensor 'used to produce the tester including the coil part-the electromotive force. The current sense deep circle Partially generated emf is roughly

536627 V. Description of the invention (3) Equivalent and opposite polarity to the Y magnetic field interference source from a distant scorching, different magnetic field, and crying with this sensor can be achieved. ^ It is manufactured by the same method as the printed circuit board (PCB), and it is better to improve the position of the lift body. Second, it is a low-cost manufacturing method, and therefore it is based on the first system; the coil part is formed. Port, receiving d, the present invention provides-an electric meter comprising:-input and output of the above-mentioned supply of electricity; one ;;: current;-outlet, path, connected to the entrance virtual outlet: door: ^ conductor 'to provide- A current meter; an electric power generator; 8 | 丨 = '^ for the above-mentioned supply current through the above-mentioned meter to supply the current amount; through the Γΐ measurement and output flow through the main body of the measurement; and measurement; Provides an indicator reading meter for determining the power supply voltage and outputting a load. The current measurement and voltage measurement in the load can determine the current consumption and the second indicator. It is characterized by: a coil unit; The coil contains: (a) an internal sensing surface and a magnetic center from the conductive coil :: bit 1: the same as: the conductive coil of the coil portion is located at " :: line ;, and the internal sensor line Defined by the structure of at least one conductor coil. I At least one magnetic center, the coil portion generally has a phase pot J product; =

Jr Jiashandu refers to the human product, connected in series and arranged #; (, ^ T > ^ = Ji = is generally located in the same motion: Fang Er;; = it has a loop part, located inside the above ^ t 円And the outer sensing coil part of which 536627 V. Description of the invention (4) One near and flat on a plane, one generally parallel to the plane where the sensing coil part is placed, and the main body and the above-mentioned sensing line The loops are arranged so that a signal is responded to the current in the main body, and a signal is induced in the above-mentioned sensing coil according to the change in current flowing in the main body. The drawing briefly illustrates the preferred embodiment of the present invention and will be accompanied by reference below. The figure is described, where: The first picture is a partial exploded view of an electric meter, suitable for use in the United States, containing two load conductors and a current sensor; and the second picture is a top view of a printed circuit board It is formed by this part of the flu shown in the first figure, which illustrates the coil arrangement of the current sensor. Figure 2a is a partial view of the cross section of the first figure through χχ, and the current flow in the load conductor is known. Seven from the taste thinker ^ iik ^ ^ ^ Relevant magnetic fields, and how the magnetic field with the arrangement of the coils in the second picture, ^ 箆 a h R s rule · 9 mutual influence; Figure two b is the% of the coil arrangement of the second picture communication A partial view of the χΓ cross section, showing the linear change in degrees; 'A magnetic field in the plane (generated by its own magnetic source) is strong. Figure 5a Block diagram of the electric metering chart; Guide: Example of 々 奴 隹The fourth picture on the upper layer of the PCB current sensor is the \ three seals:] the conductor is the fifth picture b of the present invention. The upper layer of the printed circuit board is a lower layer of the PCB current sensor (from the sixth picture is A brush conductor

3019-3428-PF.ptd Figure 6c, a household chart, divided into Figure 6a, Figure 6b, and Soil Electricity Meter, suitable for use in Figures 5a and 5 on page 7 536627 V. Description of the invention (5) --- | The connection of the current sensor in b. The seventh figure shows a load conductor arrangement suitable for measuring three-phase current, and also shows another embodiment of the current sensor system; and the eighth figure shows the current sensor that can be used in the first figure Another arrangement of sensing coils I. !! The first chart is a non-electric meter 20-a partial exploded view contains a meter j

Base, a main input 21, a main output 22, and a current sensor 1. The current sensor 丨 includes a first load conductor 2 and a second load conductor 32, which are used to be connected between the main input terminal 21 and the main output terminal 22 and pass a main current. The above main input part, 21 _ will be connected in the form of "2S · three wire, root mean square at 240 volts (120v) value, 60 Hz (60 Hz), single-phase center tap is mainly supplied, as usual In the US residential area, currents from 0 amps to 200 amps are recorded, and the main output 22 is connected to the residential area. The current sensor 1 also includes a sensing printed circuit board 5 formed by the current sensing coil 4 including a sensing portion 6 and a cancellation portion 7. In this embodiment, the sensing portion 6 is ring-shaped and coaxially lays flatly in the ring-shaped canceling portion 7. A sensor circuit system 9 on the sensing printed circuit board 5 is set up to handle current sensing. Coil

4 output, and the LCD display is used to display the accumulated energy (watt hours) from the main end. _ To—In this example, the load conductors 2, 32 are made of 2.5 mm thick and 5 mm steel. As illustrated in the first figure, the load conductor 2 is formed into a | = loop portion 2a containing an inner diameter of 9.8 mm and an outer diameter similar to the outer diameter of the sensing portion j | wound 6. Although due to being printed circuit board 5 |

3019-3428 * PF ~ ptd — —-—------- * Page 8 536627 I V. Description of the invention (6) — ^ It is not obvious that the load conductor 32 also has a load conductor 2 Exactly similar circuit part. As illustrated in the first figure, the negative conductor and the printed circuit board are arranged so that the magnetic center of the circuit through the actual loop is substantially perpendicular to the printed circuit board 5. With the 2S triple supply, most of the current will (usually) flow through the load conductor 2 戋! 5 on the load conductor 32 is connected to the load of the uncharged conductor; from this negative to the common terminal The return current will pass through the uncharged conductor (this uncharged line is in the form of a 2 S supply "the third η line and is not connected to the meter '). Other currents will flow from load conductor 2 to the load conductor 3 2. Except for the uncharged conductors during reflow, the electrical connections on the main input terminal 21 and the main life output terminal 22 will pass through blade sections 12a, 12b, 12c, and 12d with a width of 19.5 mm. Blade section They will be connected to their appropriate load conductors 2, 3 2 by copper conductors of 12 mm width. In this embodiment, the sensor printed circuit board 5 is separated from it and the load conductor by an insulation sheet (not shown). To isolate the load conductors 2, 32. An isolated non-ferrous positioning block (not shown) is used to clamp the load conductors 2 '3 2. Isolation sheet and sensing printed circuit board 5, electronic shield (not attached) Figure) are also provided on load conductors 2, 3 2 and the current sensing printed circuit board 5 to reduce the capacitive coupling of the main transmission interference (or AC main voltage potential) from the load conductors 2, 32 to the current sensing coil 4. _ Outline of the operation The AC current flowing between the main input terminal 21 and the main output terminal 22 through the loop portion of the load conductors 2 and 32 will then generate a time-varying magnetic field near the sensing coil 4. The magnetic field coil 4

3019-3428-PF.ptd Page 9 536627 V. Description of the invention (7) The induced electromotive force (EMF) is measured in proportion to the load conductor 2, 3 = 2, 32 and the current flowing through the load. Process the voltage in this induced electromotive force f for '9 and then measure the voltage between the circuit system 2, 32. The current is then engraved in conjunction with the load conductor and connected to the output 22 of the main wheel. Conductors 2, 32) determine the power consumed by this load: a measurement of instantaneous power. In order to determine the relationship, this consumed energy is connected to time with power. The power is displayed on the LCD display 10 sensing printed circuit board. The second chart shows that the printed mine is on the sensing part 6 and the offset part; and it is also explained in more detail. _ In the embodiment, the sensing printed circuit ^ The relationship of the current sensing coil 4. The copper wire is a solid-state wire = two single-sided printed circuit boards, and the dotted line 8 in the figure indicates the connection of the sensing part: two: J: 'the second Θ line connection position. The clever sensing circuit system? The first part shows: 'The sensing part 6 is a thread with four turns around the mother and a radius of ri, and the sensing part 7 is-Chan, so η is " 2 :: circle In fact, the sensing part 6 and the offset part ;: the magnetic pole position center 'is generally located in a common place, the two magnetic poles 15a and ⑽. In fact, the magnetic center of the coil is determined by the direction and position of the magnetic poles in the field, degree, so that the diameter of 7 is roughly twice as large as the sensing part 6. In this way, even if the resistance and size of the part 6 and the offset part 7 are different, they are different.

On the 10th page, the coil and magnetic poles are more difficult to detect in the field. II's stricter than 536627 V. Description of the invention (8) '--Have the same area product of turns. .Read, check the fi generation: No, hold the tail end of the sensing part 6 and the offset part 7 are connected to the sensing circuit system, the tail part of the sensing part ^ cancel part 7. As shown in the figure, the R & D circles are transported and resisted, so they are actually = the induced electromotive force 反 Λ in the cancellation section 6 which is in the direction of ^ 1, because the momentum in the sensing part is related. [隹 —The product of the induced electric area induced in the stop part 7 is roughly: etc., but the offset of the <##### of the 7 & 7 within the same space (and in the same space) response, will be compared with the cancellation part and β is free of interference from the background magnetic field. As shown in the third figure a, by sensing the printed circuit board 5 along a section of x --- x in the middle, through the magnetic pole center actually included ... Strict Λ-plane. This section shows that the sensing portion 6 and the canceling portion 7 are in the same plane, and shows the load conductor 2 on the parallel plane 6 on the parallel plane 6. Figure 3a also shows the non-connected magnetism;, --a senses the connection magnetic field line flutter and cancels the connection magnetic field line k, which represents the total generated around the load conductor 2 when it passes through the load conductor 2. This magnetic field line 3 is the moment at which time (current passes through the load conductor 2 on its positive peak). Carefully, the second load conductor 32 is not shown in the 3 & diagram. = 是 与 = The plane of the current sensing coil 4 and the position of the load conductor 2 are symmetrical. The dagger is placed flat on the sensing printed circuit. The opposite of the load conductor 2 of 5, pleased. This second load conductor 32 is connected between the main wheel in 21 and the wheel out j

536627 V. Description of the invention (9) Between 22 and 22, in this way, the magnetic field generated by the current passing through it, the current (iSj generated by the load conductor 2. The magnetic field 3 of the load conductor by the load conductor is guided by the load. : Connected magnetic field line 3a is only at the load; body is sealed, medium sense; = potential = = and a closed loop is formed around the sensing part 6; but: force, and load conductor 2, so this magnetic field line will only be connected to the sensing ; "Yao offset part i Ϊ2 is connected to the magnetic force line 3. At the same time, the sensing part 6 and offset ^ offset part 71 is wound into reverse phase sensing). As a result, both copies 6 and · " 2Λ? -™ ,,,,, ^ ;; =: 4 = ν Momentum potential Τ will be used by this electromotive force described on Putian to determine the current connected by the load to the main end. The technical reason is that it was previously on the magnetic field line. In the discussion of aspects b, b, and C, these practices I use a brief description of the real situation to understand. For example, once; 5½ Θ finite 7114 full vector field analysis on the basis of the pattern The magnetic field% and the induced electromotive force induced in the coil. Let's take the example of MS1 C12 · it to explain specifically, an important implementation type of the electric meter is its sensitivity to magnetic interference. The sensing part 6 and the offset part 7 will be arranged in Located substantially at the same magnetic center 15a, 15b, the sensing coil 4 is practically not affected by adjacent magnetic

536627 V. Description of the Invention (ίο) Effect of field gradient. A linear magnetic field gradient is related to the fact that the creature is a good seller and the higher derivative is roughly the first derivative, and the third b chart shows that the magnetic source itself is generated over time. Magnetic field gradient strength of time. Here, the magnetic source itself is a magnetic field generated by,-_P, and ’so that it is strong and quite close to the magnetism of the sensing coil 4; 'a different example of a magnetic source is a conductor distance sensing coil :. Itself 3 E: measuring device 2. During the measurement, there are a large number of in-phase and injustice flows. -In general, this source will be generated by three vertical fields. Two of these three vertical constituent elements are sensed along: the magnetic arrangement of: or not, so it fits lightly with the sensing coil 4. The other two vertical components have a plane along the vertical induction coil 4 and this magnetic field line and the united member will thus be coupled to the inductive canceling portion 7. The magnetic field along the hibiscus hibiscus to go to the second, seventh injury 6 and Norkou / oral Mengzhi constituent elements is 5 = linear magnetic field gradient, will pass linearly across the sensing coil 4, using the first The line 16 in the three b figures is illustrated. 'First, as shown in the second figure b, on the left hand of the sensing part 6 and the canceling part 7, the magnetic field strength 16 is quite high, but toward the sensing part 6: the right hand of the canceling part 7. The edges decrease linearly. Due to the change in the magnetic field strength 16 passing through the coil 4, the left-hand side of the canceling part 7 will feel a fairly strong magnetic field, and the right-hand side of the canceling part 7 will feel a relatively weak magnetic field. Similarly | Ground 丨, the left-hand side of measurement part 6 will feel a weaker magnetic field than the left-hand side of cancellation part 7, but the right-hand side of sensing part 6 will feel a stronger than the right-hand side of cancellation part / part 7. Magnetic field. Therefore, because the magnetic centers 15a and 5b of the sensing portion 6 and the cancellation portion 7 are located in the same place, the magnetic field strength 16 is in the sensing area.

3019-3428-PF.ptd Page 13 536627 V. Description of the invention (11) The effects on the measurement part 6 and the cancellation part will be largely canceled each other. = The magnetic field 16 is completely linear, so the sensing portion 6 and the canceling portion 7 will cancel each other together. The fourth figure illustrates a schematic diagram of an electric meter 20, and shows the main input terminal 21 through a first energized conductor U, and a main input, two: a first energized conductor L2. A current is flowing from the main input terminal 2 i through the snow sensor = body L1 ′ through the current sensor! The second load is directed to output 22. The current dagger will flow back from the main output terminal 22 along the current-carrying conductor 12 through the second load conductor 3 2 of the current sensor 1 to the main # 2: Said load conductor 2 and the second load conductor 32 are so arranged :, When the waiter IS passes them, they will generate mutually reinforcing magnetic fields. The sensing circuit system 9 includes an integrator 23, a voltage sensor 25, and a microcontroller 24, which is an analog-to-digital converter ⑸, and a display ^. This circuit system also includes a power supply 28, which converts the main power supply across U, into a digital voltage suitable for supplying this sensed power. The integrator 23 described above integrates the induced electromotive force output from the sensing coil 4: subject to the frequency of the current to generate a wheel-out voltage proportional to the current in the load conductors 2 and 32. The integrated value is then digitized by the analog-to-digital converter 26 of the microcontroller 2 ·. As will be known in the conventional technology, the integral 23 cancels out the induced electromotive force of the current-sensing coil 4 is proportional to the rate of change of the current flowing through the load conductors 2, 32, and ensures digitization through an analog digital converter. The signal is the true amount of current supplied

IH

苐 Page 14 3019-3428-PF.ptd 536627

For the measuring device, L1 and L2 are required. To measure and measure the control device 24, the output 22, the energy, the supply is made as shown in the figure, and the big picture is: 1. The energy from the main output to the load, the voltage of the meter, and Is current. The Vs voltage (24 ν nominally, such as the death of Lei Erjiao is 12 volts, but the phase shift from each other 1 80 0) is the Π state 25 to measure the voltage between L2, and provide a predetermined digitized analog digital conversion Device 2δ another channel. Multiplying the value of the micro control + f 2 & and is to determine the instantaneous power PS connected to the main output 9; in order to determine the system of two supplied to the load, the instantaneous power of the receiver is integrated with the relevant time. These two shoulders are then displayed on the display 10. Book t: The electrical meter 20 structure allowed for the 5t flu detector 1 is complicated, _ = '3 2 to the current sensor 1 is insulated from DC, _ one is not affected by the linear magnetic field gradient and the same magnetic field. Ming 1 ~ current sensor; 4 ~ current induction coil; 6 ~ sensing part coil; 9 ~ sensor circuit system; ~, i2a, b, c, d ~ leaf 2 0 ~ electric meter; 2 ~ First load conductor; 5 ~ inductive printed circuit board; 7 ~ cancel part of the coil; 10 ~ liquid crystal display; sheet part;

21 ~ The main wheel-in end of the electric meter The main round end of Shili Gong is 23 ~ integrator; 25 ~ voltage sensor; 2 4 ~ microcontroller; 2 6 ~ analog digital converter;

Page 15 536627 V. Description of the invention (13) 28 ~ power supply; 42 ~ slit; 43 ~ signal condition circuit system; 44 ~ lead; 1 0 1 ~ current sensor of the preferred embodiment; 1 0 2 ~ the first load conductor of the preferred embodiment; 104 ~ the sensing coil of the preferred embodiment; 1 β δ & 1 〇δ '~ the inductive part of the car traffic good embodiment] coil; 107 & 1 07 '~ internal sensing coil of the preferred embodiment; I 0 9 ~ sensing circuit system of the preferred embodiment; II 0 ~ liquid crystal display of the preferred embodiment; 1 2 0 ~ electrical metering of the preferred embodiment 1 2 1 ~ main input terminal of the electric meter of the preferred embodiment; 1 2 2 ~ main output terminal of the electric meter of the preferred embodiment; 1 24 ~ microcontroller of the preferred embodiment; 1 2 5 ~ voltage sensing of the preferred embodiment; 1 28 ~ power supply of the preferred embodiment; 1 2 9 ~ gain adjustment system of the preferred embodiment; 132 ~ main input of the electric meter of the preferred embodiment End; U ~ first conducting conductor; L2 ~ second conducting conductor. Preferred Embodiments A preferred current sensor 101 will be described with reference to the fifth and sixth figures. The above-mentioned current sensor 101 is similar to the above-mentioned current sensor 1, but has a unique sensing coil 104 as shown in Figs. 5a and 5b. The above unique sensing coil 1 0 4 is formed in a standard 1.6 mm thick

3019-3428-PF.ptd Page 16 536627 V. Description of the invention (14) The upper and lower layers of the circuit board. The fifth figure & shows the conductor track on the upper layer, and the fifth, the chart shows the printed conductor 3, the conductor track on the bottom layer (when looking down from the upper layer of the printed circuit board ^. As shown in the fifth figure a), The upper layer of the above-mentioned unique sensing coil 104, =, a conductor, is wound to increase the center tap of the clockwise spiral by 12 turns (^), said conductor is wound in the opposite direction and increased counterclockwise by 5 turns. Up = ^, The 妗 -needle spiral winding is defined as the internal sensing part 106, and the anticlockwise F ^ group is defined as the external cancellation part 107. Similarly, the semiconductor is low; ^ a conductor, wound into an anti-clockwise spiral with 12 turns The center tap (CT) = the above conductor is wound in the opposite direction and increases counterclockwise by 5 turns. In the above, the counterclockwise spiral winding of J is defined as the internal sensing part 106, and the forward: spiral winding is defined as The external cancellation part 107. In the above embodiments, the windings on the upper and lower layers of the printed circuit board are connected to the vias in the two-tap (CT), and the other end of the winding is connected to the circuit. (Not shown). 5 八 # In the current sensor 10, the internal sensing part 1 06 106, each having an inner diameter of a centimeter and an outer diameter of 10 mm, and an external offset portion μ? And an inner diameter of 2 mm and an outer diameter of 14 cm. The sensing and offsetting section ::: The width is suitably set at 0.08, (0200 mm). As mentioned above, the induction wire 104 is preferably provided with a partial load of the loop (as shown in the first figure, the inner diameter is approximately 5 mm and an outer diameter of about 10 mm. The above load guides 3 are printed on a copper sheet with a thickness of 2.5 mm, so that they: = difficult to load a 200A rated current without overheating, load conductor It is better to be 0.5 mm away from the upper and lower layers of the printed circuit board. With this junction 536627 V. Description of the invention (15) The structure of the above-mentioned unique current sensing coil 104 can be at an output voltage of 20mV rms Operated in response to a load current flowing through the load conductor at a root mean square value of 200A and a frequency of 60Hz. T The sixth diagram a, b, and c show a schematic diagram of a preferred electrical meter 12 5 includes another sensing circuit system 1 〇1 suitable for the unique current sensor i 〇1. The preferred electric meter as shown in FIG. 6 2 〇 It is also suitable for the 2S 3 wire main supply in the United States. As shown above, the electric meter 12 includes a main output 121 connected to the 2S 3 wire 240] / (12 (^) center tap 2 Leading electrodes. The two leading electrodes are designated as L1 and L2 respectively, and they are both 12 (^ root mean square value, 60Hz, with a phase difference of 180 ° between the daggers, so that they form: 240V RMS voltage. The above-mentioned meter 120 is not connected to the non- ▼ electric conductor. The energized L1 is connected from the main input terminal to the main output terminal 122 through the load conductor 102. Similarly, the energized [2 from the main input The terminal 121 I is connected to the main output terminal 122 through a load conductor 132. The load conductors 10 2 and 1 32 are arranged so that a current flows along the conducting electrode to generate a mutually reinforcing magnetic field on the current sensor 2 0}. As shown in Figure 6a, the current sensor 010 includes a unique current sensing coil 104 as described previously, and the output is integrated by a unique integrator 23. The output of the unique integrator 123 is then adjusted by a gain adjustment system 129 $ through a variable resistor R16. The aforementioned gain adjustment system 1 29 also includes an anti-aliasing system R29, C25, and R30, C26, which has a cut-off frequency of -3Db, 5kHz, and the anti-aliasing system has a value of about 2 at 60Hz. Phase shift |

536627 V. Description of the invention (16) The output of the benefit adjustment system 129 is then input to a processor 124 for digitization, and then the voltage measurement is obtained from the voltage sensor 25 (as shown in Figure 6b). Work together. Kou Ding J, the magic voltage sensor 125 measures the voltage corresponding to the conductive L1 # 〇L2. This meter 120 is used to calculate the energy supplied to the load, = main; the voltage and the current supplied to the main output are multiplied by the 私 k private voltage sensor 125 which has three functional components (some ancient components voltage attenuators to reduce The main supply-most of the people, Ding Buzheng system with the voltage of the remaining components of the instrument 25, C29, C26 feed each other, so that through the voltage sensing part and lightning and electrical measurement The phase shifts accumulated in the current sensing part of H12G (including the small phase shift of j = the small phase shift) will be equal. / 糸 ,, first, as known in the art, the above voltage sensor 丨 2 allows The fact that this unique integrator 123 includes a phase compensator (the induced electromotive force output by the above unique coil 104, the current of the two integrals 102 and 132 is proportional, and the phase of the above-mentioned induced conductor current 90. The integrator will have a dynamic phase that is ahead of the aforementioned phase, making the leading and trailing 90 °. The phase " [立 差; ^ 后 后 的 结果 90] The current flow through the load conductor 1 02, 1 32, from the product eight Two = cancel each other, # offset disappears. However In an embodiment, the above-described: a = phase full voltage, a current flows through the load conductors 2, 39 1 billion co & P cancellation is incomplete "day delivery side of a small degree

3019-3428-PF.ptd page 19 has a very complete phase of 9 0 behind 5 so Shangcheng and /, knife state 1 2 3 Wei W6627 5. Description of the invention (17) Residual phase shift. What is the difference between the above phases to ensure that the two signals mentioned above (// the table will make up for the remaining phase is less than 〇. 丨.) /) Are accurate in phase (the maximum is 129 m, 'because Some loads are connected to the main output terminal. The power supply from λ to λ is negative to the reaction from 1. The structure of the reaction is as follows: the power vector with a uniformity in # (in other words cos Φ # 1). The phase of the voltage is measured with 2 IH20. The maintenance of the current phase accuracy, therefore, the meter 120 performs a quasi-greenfield measurement, such as supplying energy relative to the main wheel output end 122, which may not be true. In the above embodiment, the processor 124 is the ad7750 integral. _ ^ 'Manufactured by an analog device. The above AD7750 integrator includes two unique j-blt outputs, a typical a / d conversion of 3 51 ^ 2 analog input bandwidth ^ =, and generates approximately 180 60Hz input signals. (Indicates the current and voltage supplied to negative ^) to digitize. The above-mentioned AD-750 integrator also includes a digital multiplier and a digital low-pass filter, so that 0775 to estimate the load connected to the main output 122 Power used. The above-mentioned ad? 75〇 Impulse trains and pulse trains whose frequency is proportional to the power used by the load (so each pulse train represents a certain amount of energy) to represent power. Use the display 10 to total these pulse trains so that the above number display represents the supply to the negative The accumulated energy in the sensor circuit. The power in the sensor circuit 109 is provided by the power supply 128 (shown in Figure 6c). A capacitor C2 is used to "pull the above main voltage to a lower Value, and then rectify and adjust to provide a + 5 volts DC supply voltage. The above power supply 28 also includes a 536627. V. Description of the invention (18) ---- — backup = battery, so that the display 11 The statistical value can be retained when the main power is cut off. In the above embodiment, the ground reference of the sensor circuit system '09 is energized u, so the sensor circuit system is based on the voltage of = L1 Here, the above-mentioned center-tap (CT), the above-mentioned unique integrator 123, and the ADCs in the above-mentioned processor are connected to a filtered and relatively interference-free ground reference. In the example, an electronic filter (not shown) is provided between the load conductors 102 and 132 and the sensing / cancellation sections 10/6/106, 10-7 / 107, 5 to reduce the peak of perturbation. The capacitive coupling and AC main supply potential to the unique integral descent 1 2 3. For practical needs, the electronic filter is connected to the "connected ground 1 'reference (powered L1). In the above embodiment, single phase The current measurement system has been described. The three-phase current measurement system will be described below with reference to Figure 7. For example, this system is used to check the current balance between the load conductors of the three-phase system. Or throw a three-phase system to measure the power used. As shown in the seventh figure, the subscripts a, b, and c respectively represent three identical accessories, including three load conductors 40a, 40b, and 40c, current sensors 41a, 41b, and 41c, and slits 42a, 42b, 42c, signal condition circuit system 43a, 43b, 43c, leads 44a, 44b, 44c. Each load conductor 40 is a copper bus bar, and is generally provided along with the planar loop shape range. As shown in the seventh figure, the slit 42 is provided in each of the above-mentioned loop-shaped ranges, in each of the respective loop-shaped ranges. In a current sensor 41, an appropriate base bracket (not shown) is used, and is placed and held at positions corresponding to their respective load conductors 40. As shown above, the above current sensing Zhai 41 is generally

3019-3428-PF.ptd Page 21 536627

= A current sensor 41 includes separate position signal condition circuits. Second, a signal is generated. The above value is maneuvered with the signal in the combined load conductor 44. In the above embodiment, this signal is output to a surveillance system along the lead 44 (not shown). . !! ^ The above-mentioned load conductors 4 are separated from each other by a distance, which can fully protect f any magnetic field coupled near the current sensors 41 a, 41 b, and 4 1 c, which is lower than the correct degree required for the above applications. So each current sensor · 丨 ▲, 1 in the motor will measure 5 will be largely unaffected by the current flowing in the other phase | conductor 40 near the other. i _ In the above embodiment, a loop current sensing coil is used. As is known in the art, sensing coils of other geometries will still be an example of the excellent station provided by the present invention. The eighth figure shows that another current sensing coil includes a triangular sensing part 6, Placed in a square offset portion 7 ,, as described in ^, the embodiment described above, the position of the magnetic pole center of the triangle sensing portion 6, s and the square offset portion 7 is generally in position. They are in the same place and matched with each other, and their turn area products are roughly equal. Although in the previous embodiments of the electric meters 1, 20, 120, the ring-shaped paralyzed spiral current sensing coils 4, 104 used in the reference, the actual spiral coils are actually quite difficult to design and manufacture. Therefore, the preferred spiral coil type is an approximately semi-circular portion with increasing or decreasing diameter. I | Any of the many changes 5 that can be made to the above embodiments will now be described. i 5

536627 V. Description of the invention (20) 1. However, the foregoing embodiment uses a load conductor 2, including 1 turn, and 3 is possible. For example, in order to generate an enhanced magnetic field: Force: 15 Sensitive load conductor 2 of system 1 includes multiple coils "U: Disadvantages of load conductors include increased manufacturing costs and excessive self-esteem], .... In other In the embodiment, the wire is used to replace the copper bus bar to form σ = 2 Luli. The two wires can omit the lines in the bracket (not shown): ί 范围 ίί. · The bracket is attached to the sensor printed circuit board. Structure: The disadvantage of the m wire is that it includes a non-ideal magnetic field structure and a reduction in the reproducibility of the load conductor compared to the previous control. In the example of the circuit above, the sensor block is fixed with an iron fixing block. #: 路? On the load conductor, the iron fixing block then acts as a :: ': Carcass: force line 3, so that the load conductor 2 and the sensing part 6 are combined. However,' makes a potential of the iron fixing block 'Γ, the AC load on the load conductor 2 is closed + the gate 1 point f = causes it to overheat. If the load v body 2 = two: block Ge: sense of truth ;: absolutely ;;; Insulating fixing block or ^ magnetic light closing: one of the sub-load conductor 2 and the sensing part 6 The sensing part 6 and the canceling part 7 are enclosed by a surrounding load conductor 2. Brush circuit board 2 = two ί 2 Includes the flue detector 1, 41, 1 01 with the conductor mode in terms of electrical control The shape and shape of the seal are all described. At the same time, the printed circuit test section and the Xiao section, the wire will be properly wound to produce a cool bucket: two examples are also envisaged. For example, a sensing section and a canceling section 5 or

3019-3428-PF.ptd Page 23: Reproducible and quite low cost manufacturing is its current sensing source Yu-High 536627

Page 24 V. Description of the invention (22) The coils ′ each have the same plane. The load conductors Z are of the same size and are arranged vertically on the long side of the load conductor and. 卞 from / will lightly close the two coils, but along the coils they are currently the strongest. The part is generally the sensing part of the embodiment described in the same embodiment and the offset is substantially the same as that of the other embodiment, and is substantially the same as the direction of the same 5 while the sensing is substantially maintained. There will be a gap in the sensing and canceling parts, although, because the magnetic pole axes of the sensing $ and the canceling parts are coaxial. An additional embodiment will be affected by the interval between the planes of the offset portions, and the above embodiment will be affected by the magnetic field of the body along the axis of this portion. Although the above-mentioned sensing part and the offset. ^ On the vertical coaxial axis (as explained earlier, the magnetic field gradient remains relatively unconstrained, as far as the left-hand side and right-hand side are concerned) in the above embodiment 丨^ The above-mentioned sensing part and the offset part connected to the printed circuit are connected in series by the two circuits, and these two parts are actually processing the fruit. In the example of the first embodiment, it is necessary to achieve the same result and offset some peaks ^ The processor combination of the process description is bitized by the sensing part, and one is amplified, combined, and counted. Say, via this person # again the signal affected by external magnetic fields. Further inducing the electromotive force, the second part and the second: the inductive part in the cancellation part can have different E-number area products. The copy and offset. Sensing part has a store approved by the second company> 7 Take 5 as an example, if--3 times the amplifier. 9 breaks and is offset by the

3019-3428-PF.ptd Page 25 536627 V. Description of the invention (23) In the above embodiment, the load conductor is quantized so as to be more strongly coupled to the internal coil (sensing section) than the external coil (cancel section). know). In another embodiment, the load conductor is quantized so that it is more strongly coupled to the outer coil than the inner wire. However, keeping the sensing part 0 on the inside allows the current sensor 1 to be minimized. Since the use of two reductions js 1 A r ttc? T] ^ 疋 2 疋 the sensitivity of the non-ting magnetic field 5 Linear quantization with reduced current sensor} would be good. However, a miniaturized current sensor iβ 1 ^ a vector of limited width is the work done in load conductors 2 and 32. Generally, load conductors 2 and 32 must be quantified so that Combined low resistance, and in order to provide actual heat conduction away from its loop shape area _ The current sensing described above on the same day has their sensing parts 6, 10 and half of the offset part; and magnetic poles: The heart is co-located and coaxial; these are the allowable errors. The above-mentioned error of aluminum sores—the alpha is not useful. The error reduction of the current sensor is enhanced :::: J will be vulnerable according to the above-mentioned sensor :::: sensing and cancellation Partial 'will cause a current field gradient. In the same way, if the plane vertical magnetic amplifier between the attack and cancellation part is not between I 趑 ° 卩 and the offset part, or if they are divided and there is a magnetic field gradient, it will conduct the flu test. The sensor is susceptible to some influences on the uniform magnetic field sensing part and resistance. Further, if it is true, then the current coupling device will not affect the magnetic coupling pole of the m part in the same direction. It becomes the double-uniform magnetic field and the gradient magnetic field.

3019-3428-PF.ptd Page 26 536627 V. Description of the invention (24) Cheng and 107, ioV The 'sensing parts 106 and 106' in the column “V” indicate that they are respectively wound into it and it ^^ 向 / ^ In another embodiment, in the embodiment, the sensing portion is partially reversed. Kan ^ ^ = same direction 'but the opposite direction that connects them to offset, such as β / knife, is connected to their offset section 107, ior section 106, 1〇ν,' eight parts: 106, 106, The advantage of the winding is the sensing connection, which is convenient for them. / They cancel the parts 107, 107 will be connected to each other respectively: Arrival: Department = 6, 106, the need to connect the external coil directly to the wire. V's internal coil 5 excludes the channels or they are interconnected). In other respects, it is necessary to surround the coil winding and make the tap CT "Kuidu, current sensing, and further modification of the coil 104, center 1 ι t} ^ ^ ^ ^ ^ ^ Tap coil two = τ early output of the coil. Known technology knows that the above without the circuit board i 05, in fact, there are two sound lines ® lines in series (one in the printing αα «_. ^ The other in the lower layer) 'and will produce straight equal amount h Two coils of induced electromotive force without coils. Since roughly every two phases are affected by a flat I gradient, a plurality of such layers are stacked together to form a solenoid that employs a positive current sensing coil. The fear of the above-mentioned embodiment is that the end point of the above layer and the solenoid forming the above-mentioned solenoid to the sensing cliff: the assurance of the internal connection between the magnetic, the animal, and the 'is not their own appearance-table. V k 里 的 电路The area will generate additional induced electromotive force. Or the helical solenoid current sensor will be extended by other internal numbered ones, instead of the solenoids stacked in layers. .

3〇19-3428.PF.ptd page 27 In the above-mentioned embodiment, the above-mentioned signal output from the above-mentioned sensing coil is 536627. 5. Description of the invention (25)-integrated by an analog integrator, in another embodiment, The above points will be handled by the upper escape micro processing. Alternatively, the integral of the above-mentioned signal from the sensing coil will be omitted. However, without this integral, the above-mentioned signal from the sensing coil 4 and the supply current Is and the above-mentioned main frequency of the main input terminal 21 (typically 60 Hz) , And harmonics of any multiple thereof). In most cases, the estimable part of a power is a harmonic—a multiple of the dominant frequency. So 'Since the current sensing coil 4 is proportional to the rate of change of the magnetic flux, the harmonic current will be measured with a particularly large reading. The above effects will compensate for a fast Fourier Transform (FFT) for current measurements and reduce the amplitude of any harmonics proportional to their fundamental frequency. Therefore, in order to avoid the above-mentioned processing error, the integral of the signal obtained by Ling current sensor is better. The integration also enables a DC current through the load conductor 2 to be measured via any change in the integrated DC current. Although it is better if there is no integration of the current signal, in general, a phase shift of 90 ° will still be required in the current path (to compensate for the 90 ° leading phase caused by the current sensor 1, 101 Difference) to make the voltage and current in the same phase in order to measure the real power used by the load. In other words, the measured load uses the reflected power, and the voltage and current signals will have a phase difference of 90 degrees (that is, the phase of the current signal from the voltage signal + 90 °), which is determined by the knowledge of the real power and the virtual power of the load. Load power vector. In another embodiment, the electric meter 20 will omit the voltage sensor 25. The voltage sensor 25 is used to measure the voltage of the actual main input terminal 21 corresponding to the nominal value. In the case of the voltage of the main input 21, it is quite stable, or the reduced accuracy is acceptable, and the nominal value will be stolen.

3019-3428-PF.ptd Page 28 536627 V. Description of Invention (26) ^ ---- Calculate the power supplied to the load. The use of nominal voltage measurement is also useful. It only requires a separate ADC digitizing circuit. Various modifications of the embodiment of the electric meter 120 described so far, for example, an additional circuit system that adds a differential integrator 123 to filter out non-linear 60 Hz frequency components. The AD7756 activity meter, which is further modified and manufactured by an analog device, replaces the previous': text Af775 0. The AD775 6 is a more sophisticated device that provides an auto-scaled interface to achieve a j-click interface. It also includes an on-chip scaled energy measurement register, thus excluding the choice of testing or fine-tuning parts, and the use of phase = compensation recorders. The phase compensation digitally balances the phases of the signals from the integrator 123 and the voltage sensor 125, thereby eliminating or simplifying the phase compensation system with the voltage sensor 125. In a further example, the second display current, voltage, power, or other energy consumption sensor 41 is supplied with a high voltage formed on the traditional printed circuit board, if each three current sensing It is better that at least a part of the assembly 41 is formed on an advanced insulation body such as an oxide. This structure is recognized by management organizations like 讥, CSA, and VDE. Further, although each current sensing assembly "is better with its own signal function circuit system 4 3, it can use wires 4 4 arrays to conduct the induced electromotive force generated by the sensing and canceling parts, respectively." Various alternative embodiments illustrated in the seventh figure are possible. For example, if it is known that the currents on the three load conductors 40 are balanced, then only the measurement needs to be performed on the two load conductors 40, and the third The current of the phase conductor 40 will be inferred from the other two measurements. In detail, although the current

3019-3428-PF.ptd Page 29 536627 V. Description of the invention (27) Remote signals are used as wires in the field 4 4 A wrong seventh picture is added to indicate that each current sense in the place replaces the negative of the slit 42 on. In order to obtain the two sides with two current sensing areas, they will be added together. For example, a current flowing through the load is set to the inductive conductor through the load. Although the main ground potential electric power described above, the current sense is another For example, the implementation of the above two load conducting conductors to the above-mentioned application output terminal of the sense amplifier 5. This 9 and a current sense they are also measured / adjusted

^ System: This has the disadvantage that several sections | ::: will result in the desired signal! Induced emf. The detectors 41 are respectively mounted on the respective slits 42 in the load conductor 40. Or, the current sensor 4 will be installed on one side of the loop shape area of the combination of the load conductor 40 and the application is more reliable: each load conductor A0 breaks the detector 41, and one of the load conductors is installed on the two loop shapes. Area. The signals from the two current sensors 41 mentioned above are then averaged together, and then the more accurate measured value of the load 40 is processed. For example, a single current sensor will be used to measure the current of the body at the same time. In the above embodiment, one side of one sense amplifier is suitably set, and then the other side of the other load conductor frame is used. The current sensor will next measure the increase of these two magnetic fields. In the example, the electric meters 20, 120 are directly connected to the above-mentioned energized conductor to provide a ground reference. In a modified embodiment, the electrical meter will be completely isolated from the main part when the meter is connected, and a main voltage measurement capacitively coupled to the main terminal will be obtained. Detectors 1, 41, and 101 are used in electric meters 20 and 120 for other applications, including electric meter reading, power vector correction, and similar current sensing. Or 3019-3428-PF.ptd Page 30 536627 V. Description of the invention (28) It means that the common current sensor using the large electric meter to accumulate the energy of the current will be used to represent the power used by the load (relative to The body is not an example to use in a part of the sensor. In order to connect the two spiral-wound printed electric wires through a sizing hole, it is a more common current, but it is easy to form circuits in the same group with a circuit board. At this time, the hand is bypassed to print the phase sensor to form an integration. The printed magnetic field ladder has been formed on the center circuit board grouped on the more common clockwise channel layer. Electricity is particularly described as the current sensors 1, 41, 101 on the circuit board. In another embodiment, compared to a printed circuit board, the current sensor is used as an example of an electrical meter and The other is counterclockwise and is shaped in a single. The two windings are symmetrical except for the arrangement of the load (the line on the edge of the component passing through a suitable 1 printed circuit board, the innermost line of the windings Although this has the disadvantage of being susceptible to magnetic field gradients, the advantages of the board; making the signal processing signal processing circuit like a sensor,

Claims (1)

536627 Bu Xiu Patent scope 1 Ibl No. 89118503 f / year / month / b I. -m electric energy converter, applicable to current sensors, the above electric energy converter includes: a first axis, and a second magnetic field center Axis, and the center of the magnetic field, co-axial way 2. As stated in the first and second 3. As stated in the first and fourth 4. As described in the first and the effective magnetic field center 5 • As stated in the first sensing product . 6. As stated in the second sensing, each turn of the wire senses the above windings of the winding; and the above mentioned arrangement of the above mentioned windings of the sensing winding. Please apply for the patented second sensing winding. Please apply for the patented second sensing winding. The application of the second sensing winding will essentially require each of the patented winding and the patented winding to include one of one or more turns of conductors. One of the structures defined and located on the axis includes a structure defined by one or more turns of conductors and located on the axis. The effective first and second sensing windings are essentially The power converter according to item 1, wherein the upper group is arranged in a substantially mutually parallel plane. The power converter according to item 1, wherein the upper group is substantially located in a common plane. The power converter according to item 1, wherein the upper group is arranged so that the above two sensing windings have the same position as the power converter according to item 1, wherein the upper second sensing winding has a different Winding surface 7. As described in the patent application, the first sensing winding contains the electrical energy converter described in item 5, wherein the previous turn of the wire will surround the first sensing winding described in item 1 above. Power converter, in which the product of the area of the previous turn is 3019-3428-PFl.ptc Page 32}! No. 891】 Milk ⑽ Correction ‘, claim the patent scope group The product of the number of turns and area contained in the group will be substantially equal. ·· 8 · The electrical energy converter according to item 1 of the scope of patent application, wherein the first winding includes a plurality of turns of conductors. 9. The electric energy converter according to item 8 of the scope of the patent application, wherein the above-mentioned plural turns of the first winding are substantially located on a common plane. ·· 乂 10 · The electric energy converter according to item 1 of the scope of patent application, wherein the second sensing winding includes a plurality of resistance wires. ^ The electric energy converter according to item 10 of the scope of patent application, wherein the plurality of turns of the first winding are substantially located on a common plane. Μ 1 2 · The electrical energy converter according to item 1 of the scope of the patent application, wherein the first and second sensing windings are formed on a common printed circuit board, 1 3 · As described in the first scope of the patent application The electric energy converter described above, wherein the first and the second sensing windings are connected and arranged in series, so that the signals induced by the first and the second sensing windings under a same electromagnetic field are mutually exclusive. of. 1 4 · The electrical energy converter according to item 1 of the scope of patent application, further comprising a processing device for processing the signals sensed in the first and second sensing windings. 15 · The electric energy converter according to item 14 of the scope of patent application, wherein the processing device includes a subtracting device that subtracts one signal output from the first sensing winding from the signal output from the second sensing winding. A signal. 16. The electric energy converter according to item 14 of the scope of the patent application, wherein the processing device includes an integrator for integrating the above-mentioned signals from the first and upper & second ^ sense windings, level 5 662 Still repairing the year and month 89118503 six years ▼ ϊίϋϋ 口 口 1 7 · As mentioned in item 14 of the scope of the patent application, the above-mentioned processing device and the above-mentioned first and second senses, “,”, “,”, the above-mentioned processing device and the above-mentioned A common circuit board. 1 8 · A current sensor including 'for receiving a load from an electric input power supply source; a current outlet' for outputting the above current to a ** port, and it is provided to provide a driver rL A The magnetic force of the set is strong, in which the windings. Its-conductor is connected to the above-mentioned entrance and the above-mentioned "^ -current path" 丨 the above-mentioned current flows through the above-mentioned current sensor; the two electric energy as described in the scope of patent application item 1 is changed near the above-mentioned conductor, so that the above-mentioned The conductor is coupled with the first sensing winding to measure the current than the magnetic coupling between the conductor and the second sensing winding. 1 9 · The current sense described in item 18 of the scope of patent application / is the part of the above-mentioned guide system containing-loop, which is adjacent to the above / sense ~ test 20. As the current sense described in scope of patent application 丨 9 In the device, the circuit part of the conductor is substantially placed in a plane; the main body is included on a plane substantially parallel to the plane of the upper part; and the power converter is located in the slit, so that The sensing axis is substantially perpendicular to the plane of the loop portion. 21. A current sensor as claimed in the patent application, wherein the above-mentioned conductor comprises a winding of a resistance or a multi-zone. 22. The conductor of the current sensor described in item 18 of the scope of the patent application can be separately installed on the circuit winding of the current sensor. Page 34 Secret and Repair IL 丨 year, month, year, _case number 89118503_year Month_Charm_ VI. Patent Application Range 2 3. The current sensor described in item 18 of the patent application range further includes a ferrous salt member to provide a closed magnetic path that surrounds the conductor, the above The first sensing winding and the second sensing winding. 2 4. The current sensor according to item 18 of the scope of patent application, further comprising: at least one other inlet for receiving another current from one of the other power supply sources; at least one other outlet, For outputting the at least another current mentioned above to at least one other load; and at least one other conductor connected between at least one other inlet and at least one other outlet for providing at least one other current path, For at least one other current to flow through the current sensor; wherein the at least one other conductor is arranged so that the magnetic coupling between the at least one other conductor and the first sensing winding will be greater than the at least one other conductor and The second sensing winding is strongly magnetically coupled to measure the at least one other current. 2 5. The current sensor according to item 24 of the scope of patent application, wherein the at least another conductor includes a loop portion adjacent to the first sensing winding. 2 6. The current sensor according to item 25 of the scope of the patent application, further comprising a conductor for providing a return path for the current to flow between the aforementioned inlet and the aforementioned outlet. 2 7. A current sensor including a power converter, as described in item 1 of the patent application. 2 8. —An electric meter including an electric energy converter as described in item 18 or item 27 of the scope of patent application, further including: 3019-3428-PFl.ptc Full correction on page 35 丨 I Supplement j Case No. 89118503_Year Month and Day_ί ±± _ ......- ~~ mr " VI. Patent Application Scope-Voltage Measurement A device for measuring the voltage of the power supply source; and a measuring device for measuring and outputting an indicator reading of an electrical characteristic of the load based on the measured current and the voltage. 2 9. The electric meter according to item 28 of the scope of patent application, wherein the voltage measuring device is used to measure the instantaneous voltage of the power supply source. 30. The electric meter according to item 28 of the scope of patent application, wherein the measuring device determines the power used by the load by multiplying the measured current by the measured voltage. 3 1. The electric meter according to item 28 of the scope of patent application, wherein the measuring device determines the energy consumed by the load by integrating the power used by the load and the relevant time. 3 2. The electric meter according to item 28 of the scope of patent application, wherein the above-mentioned measuring device comprises: a phase shift network for measuring the current and the voltage according to a predetermined quantity and a changed quantity. Corresponding phase. 3 3. The electric meter according to item 28 of the scope of patent application, wherein the measuring device is used to output an indicator reading of the energy accumulated by the load. 3 4. The electric meter according to item 33 of the scope of patent application, wherein the measuring device is used to output the accumulated energy consumed by the load to a display. 3 5. —An electrical energy converter suitable for sensing a magnetic field related to a current flowing through a conductor in an electrical meter, the electrical energy converter includes: a first sensing winding including one or more turns The conductor forms an axis, and one defined by the structure of the above winding and located on the axis 3019-3428-PFl.ptc Page 36, Volume 586 2 ^ Revised “EJ Year Month Supplementary Permit” Case No. 89118503 Month, Revised VI. Patent Application Effective Magnetic Field Center, and a second sensing winding, including a One or more axes are formed by the turns or multi-turn conductors, and an effective magnetic field center defined by the structure of the above winding and located on the axis; wherein the first and second sensing windings are based on the two sensing windings. The effective magnetic centers of are arranged in such a way that they are substantially in the same position. 3 6. —A current sensing component for sensing and outputting a current measurement flowing in a conductor. The current sensor component includes a first sensing winding having a resistance or multiple resistances. Forming an axis; and a second sensing winding having an axis formed by one or more turns; the first and second sensing windings of the sensing winding are configured so that the two groups described above The axes of will be aligned in a manner that lies substantially on the same straight line. 3 7. —A current sensing component for sensing and outputting a current flowing in a conductor 'The current sensor component includes a first sensing winding having a plurality of conductor coils located substantially on the same plane, And a magnetic field center defined by the structure of the plurality of conductor coils; a second sensing winding having at least one conductor coil located substantially on the same plane as the conductor coil of the first sensing winding, and by the at least one A magnetic field center defined by the structure of the conductor coil; wherein the product of the number of turns of the first and the second sensing winding sections is substantially equal, and the first and the second sensing winding sections are formed by So that the centers of the magnetic fields of the two windings will be substantially at the same position, and 3019-3428-PFl.ptc Page 37 5¾ New Years and Years, Years, Months and Days, '* I _ # _ 号 89118503_Years Months and Amendments _: 6. Scope of patent application and magnetic coupling with the above conductors will have different magnetic properties And a measuring device for subtracting the induced electromotive force induced by the external sensing coil from the induced electromotive force induced by the external sensing coil to measure the current. 3 8. The current sensing member according to item 37 of the scope of patent application, wherein the number of coils of the first sensing winding is less than the number of coils of the second sensing winding, and the first sensing winding is The coils are placed in the coils of the second sensing windings, so that the coils of the first and second sensing windings do not overlap. 3 9. An electric meter including: an inlet for receiving a supply current from an electric power supply source; an outlet for outputting the above supply current to a load; a main body connected to the above inlet and the above Between the outlets, to provide a current path for the supply current to flow through the electrical meter;-a current sensing 'to sense and output the supply current flowing through the main body; a voltage measurement device, for To measure the voltage of the power supply source; and a measurement device for determining and outputting an indicator reading of the energy consumed by the load based on the measured current and the voltage; characterized in that The current sensor includes a sensing winding having: an internal sensing winding portion having a plurality of conductor coils located substantially on the same plane, and a magnetic field center defined by the structure of the conductor coil; and 3019-3428-PFl.ptc page 38 ± —I day—correction 丨 year and month h person ^ i 丨 cable number 89118503 '" 7η1) JL.j I — a reading-only pair of external sensing windings Fen 'has at least one conductor coil located substantially on the same plane as the above-mentioned internal sensing coil, and a / magnetic field center defined by the structure of the at least / conductor coil; the above-mentioned internal and external sensing winding portions, substantially Will have the same band area product 'and the internal and external sensing winding parts will be connected and arranged in series, so that an alternating magnetic field of the same background will be induced in the internal and external sensing windings The induced electromotive forces are mutually exclusive; and the effective magnetic field centers of the internal and external sensing parts will be located substantially at the same position; the internal systems are placed substantially parallel to each other; The current will be applied vertically. Among them, the above-mentioned main body has a loop portion, which is adjacent to one of the external sensing winding portion, and the above-mentioned avoiding portion is substantially larger in quality. On the plane of the body and the plane on which the above-mentioned sensing winding portion is placed; and, wherein the arrangement of the above-mentioned main body and the sensing winding, the current flowing in the prepared carp body, will pass through the above-mentioned sensing winding. A signal that varies with the current in the main body. 4 0 · Shi declares the electric power described in 9 items of patent scope: 2 for receiving a power supply from a power supply source to rotate the above supply current to a load 7-connected between the above inlet and the above outlet 'Used to mention 3019-3428-PFl.ptc on page 39 of the circuit section 'Defines the main body of the main V :: arrangement of the upper conductor and the above-mentioned sensing winding, the plane of the main body: the center, is connected linearly to Essentially 4 1 A kind of bud, the above magnetic field center of the above-mentioned sensing winding, an electric meter, including: Case No. 89118503 ^ _η Amendment VI. Patent application scope for a current path for the above supply current to flow through the above electricity measurement A current sensor for sensing and outputting the above-mentioned supply current flowing through the main body; a voltage measuring device for measuring the voltage of the above-mentioned power supply source; and a measuring device for measuring The measured current and the voltage determine and output an indicator reading of the energy consumed by the load; the current sensor includes: a first sensing winding having a first winding for defining the first winding; A plurality of conductor coils at a magnetic field center; a second sensing winding having at least one conductor coil for defining a magnetic field center of the second winding; And a second sensing winding arrangement as here, it will have substantially the same turns area product, and said first and second effective magnetic field sensing coil measured at the center of the bit will be substantially in the same position. 4 2. —An electric meter including: an inlet for receiving a supply current from a power supply source; an outlet for outputting the above supply current to a load; a main body connected to the above inlet and the above Between the outlets, a current path is provided for the supply current to flow through the electrical meter; a current sensor is formed on a circuit board to measure the supply current; a voltage measurement device, For measuring the voltage of the power supply source; and • a measuring device for measuring the current and the power according to the measured current 3019-3428-PFl.ptc Page 40 Bismuth © · repair it; year and month π i. 圩 夕 号 18 89118503 _ year month day _ί ± ± _ VI. Patent application pressure, determine and output the above load An indicator reading for electrical characteristics. 4 3. The electric meter according to item 42 of the scope of patent application, wherein the electrical characteristics of the load are the energy consumed by the load. 4 4. The electric meter according to item 42 of the scope of patent application, which includes a processing device for processing the signal sensed in the current sensor, and wherein the processing device is the same as the current sensor Formed on the same circuit board. 3019-3428-PFl.ptc Page 41