CN201955393U - Single-phase guide rail type carrier wave electric energy meter - Google Patents
Single-phase guide rail type carrier wave electric energy meter Download PDFInfo
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- CN201955393U CN201955393U CN2011200665670U CN201120066567U CN201955393U CN 201955393 U CN201955393 U CN 201955393U CN 2011200665670 U CN2011200665670 U CN 2011200665670U CN 201120066567 U CN201120066567 U CN 201120066567U CN 201955393 U CN201955393 U CN 201955393U
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Abstract
The utility model relates to a single-phase carrier wave electric energy meter, and provides a single-phase guide rail type carrier wave electric energy meter adopting a switching power supply scheme. The electric energy meter comprises a power supply module, a singlechip central processing unit, an electric energy metering module, a carrier communication power supply switch and control module and a power line carrier communication module. The electric energy meter adopts the outline of the guide rail type electric energy meter and the switching power supply supplying scheme, so that the electric energy meter has the advantages of small volume, high reliability, lower power consumption, and the like.
Description
Technical field
The utility model relates to a kind of single-phase carrier electric energy meter, particularly a kind of single-phase guide rail type carrier electric energy meter that uses the Switching Power Supply scheme.
Background technology
The common single-phase electronic energy meter of existing band carrier communication module, volume is generally bigger, has caused raw-material serious waste, has also brought certain difficulty because of the excessive problem of its area occupied to installation.At the problems referred to above, people have proposed the scheme of guide rail type electrical energy meter, and it is little that guide rail type electrical energy meter has a volume with respect to common electronic electric energy meter, advantage such as easy for installation.But existing guide rail type electrical energy meter is had relatively high expectations to the withstand voltage and anti-interference of electric energy meter electric source because of the carrier communication function again because the restriction of volume can not be placed common transformer wherein, has hindered the application of carrier communication on single-phase guide rail type electrical energy meter.
Summary of the invention
The purpose of this utility model is exactly in order to overcome above-mentioned the deficiencies in the prior art part, and provide a kind of single-phase guide rail type carrier electric energy meter, it is guaranteeing under the original performance condition of electric energy meter, can effectively reduce the oneself power consumption of electric energy meter, satisfy energy conservation and environment protection, and can realize centralized automatic meter-reading by the power line carrier mode.
The purpose of this utility model realizes by following technical measures: the single-phase guide rail type carrier electric energy meter, comprise power module, the single-chip microcomputer CPU (central processing unit), the electric energy metrical module, carrier communication power supply switching controls module, Power Line Carrier Communication Module, described power module comprises the High frequency filter anti-jamming circuit, switching power circuit and rectification filtering voltage stabilizing circuit, wherein the input end of the output terminal of High frequency filter anti-jamming circuit and switching power circuit links, the output terminal of switching power circuit and the input end of rectification filtering voltage stabilizing circuit link, the output terminal of rectification filtering voltage stabilizing circuit respectively with the single-chip microcomputer CPU (central processing unit), the power input of electric energy metrical module and carrier communication power supply switching controls module links, the control signal end of the control output end of single-chip microcomputer CPU (central processing unit) and carrier communication power supply switching controls module links, and the output terminal of carrier communication power supply switching controls module and the power end of Power Line Carrier Communication Module link.
In technique scheme, feedback sample that is connected between described switch power supply route coupling transformer circuit, width modulation driving circuit, width modulation driving circuit and the coupling transformer circuit and control circuit thereof are formed; Described coupling transformer circuit is made up of coupling transformer T1, voltage stabilizing diode D3, diode D1 and diode D2; Described width modulation driving circuit is made up of the pulse width modulating chip U1 of filter capacitor C1 and integrated MOS pipe; Described feedback sample and control circuit thereof are made up of resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, optocoupler OP1 and three-terminal voltage-stabilizing pipe D4; The output terminal of 1,5 liang of termination High frequency filter anti-jamming circuit of described coupling transformer T1,2,5 ends of coupling transformer T1 are connected respectively to width modulation output terminal, the GND end of pulse width modulating chip U1,4 ends of coupling transformer T1 are connected to the operating voltage end of pulse width modulating chip U1 by voltage stabilizing diode D3, the positive pole of the 1 terminating diode D1 of coupling transformer T1, the positive pole of the 2 terminating diode D2 of coupling transformer T1, the negative pole of diode D1 links to each other with the negative pole of diode D2, and described coupling transformer T1 secondary output end connects rectification filtering voltage stabilizing circuit; Capacitor C 1 is connected between the operating voltage end and GND end of pulse width modulating chip U1 in the described width modulation driving circuit; The operating voltage end of pulse width modulating chip U1 in the resistance R 1 one termination width modulation driving circuits of described feedback sample and control circuit thereof, one terminates at output terminal 4 ends of optocoupler OP1, output terminal 3 ends of optocoupler OP1 are connected to the feedback input end of pulse width modulating chip U1 in the width modulation driving circuit, the input termination three-terminal voltage-stabilizing pipe D4 of optocoupler OP1 and build-out resistor R2 thereof, resistance R 3, resistance R 4, resistance R 5; The plus earth of three-terminal voltage-stabilizing pipe D4 in described feedback sample and the control circuit thereof, the negative electrode of three-terminal voltage-stabilizing pipe D4 connects its working power through resistance R 3, the negative electrode of three-terminal voltage-stabilizing pipe D4 connects input end 2 ends of optocoupler OP1 in feedback sample and the control circuit thereof, the reference utmost point of three-terminal voltage-stabilizing pipe D4 is through resistance R 4 ground connection, the reference utmost point of three-terminal voltage-stabilizing pipe D4 connects its working power through resistance R 5, and resistance R 2 is connected between input end 1 end and its working power of optocoupler OP1 in feedback sample and the control circuit thereof.
In technique scheme, described pulse width modulating chip U1 model is VIPER12A, is integrated with metal-oxide-semiconductor.
In technique scheme, described High frequency filter anti-jamming circuit comprises compound temperature-sensitive R6, capacitor C 2, capacitor C 3, inductance L 1, inductance L 2, inductance L 3, inductance L 4, rectifier bridge DT, the external communication electricity is gone into circuit by live wire input L end and zero line input N termination, composite thermistor R6 is connected in parallel between live wire input L end and the zero line input N end, and capacitor C 2 is connected in parallel between live wire input L end and the zero line input N end; Live wire input L holds the input end that is connected to rectifier bridge DT through inductance L 1, inductance L 3, and live wire input N end is connected to another input end of rectifier bridge DT through inductance L 2, inductance L 4; Output terminal and the switching power circuit of rectifier bridge DT link, and capacitor C 3 is connected in parallel between the output terminal and switching power circuit of rectifier bridge DT.
In technique scheme, described carrier communication power supply switching controls module comprises resistance R 7, resistance R 8, capacitor C 4, capacitor C 5, triode BG1, triode BG2, three-terminal voltage-stabilizing pipe IC1 and compound diode D5, the control output end of described control signal end P1 and single-chip microcomputer CPU (central processing unit) links, control signal end P1 is connected to the base stage of triode BG1 through resistance R 7, the emitter of triode BG1 is connected to the GND end, the collector of triode BG1 is connected to the base stage of triode BG2 through resistance R 8, the collector of triode BG2 is connected to the first input end of compound diode D5, the emitter of triode BG2 is connected to the input end of three-terminal voltage-stabilizing pipe IC1, the output terminal of three-terminal voltage-stabilizing pipe IC1 is connected to second input end of compound diode D2, capacitor C 4 is connected between the input end and GND end of three-terminal voltage-stabilizing pipe IC1, and capacitor C 5 is connected between the output terminal and GND end of three-terminal voltage-stabilizing pipe IC1; The input end of described three-terminal voltage-stabilizing pipe IC1 and the output terminal of switching power circuit link, and the output terminal of compound diode D5 and the power end of Power Line Carrier Communication Module link.
Advantage of the present utility model is: adopt the profile and the Switching Power Supply power supply plan of guide rail type electrical energy meter, make electric energy meter have characteristics such as small size, high reliability, low-power consumption.The sheathing material that the single-phase guide rail type carrier electric energy meter uses only is about 1/4 of a common table, and the copper-manganese that terminal uses also has only about 1/3 of common single-phase electronic energy meter, greatly reduces raw-material consumption; Simultaneously power-line carrier communication is applied in the single-phase guide rail type electrical energy meter, helps popularizing of guide rail type electrical energy meter.
Description of drawings
Fig. 1 is the circuit block diagram of the utility model single-phase guide rail type carrier electric energy meter.
Fig. 2 is the circuit connection diagram of switching power circuit among the utility model embodiment.
Fig. 3 is the circuit connection diagram of the utility model embodiment medium-high frequency filtering antijamming circuit.
Fig. 4 is the circuit connection diagram of carrier communication power supply switching controls module among the utility model embodiment.
Embodiment
The utility model will be further described below in conjunction with drawings and Examples.
As shown in Figure 1, the utility model single-phase guide rail type carrier electric energy meter, comprise power module, the single-chip microcomputer CPU (central processing unit), the electric energy metrical module, carrier communication power supply switching controls module, Power Line Carrier Communication Module, described power module comprises the High frequency filter anti-jamming circuit, switching power circuit and rectification filtering voltage stabilizing circuit, wherein the input end of the output terminal of High frequency filter anti-jamming circuit and switching power circuit links, the output terminal of switching power circuit and the input end of rectification filtering voltage stabilizing circuit link, the output terminal of rectification filtering voltage stabilizing circuit respectively with the single-chip microcomputer CPU (central processing unit), the power input of electric energy metrical module and carrier communication power supply switching controls module links, the control signal end of the control output end of single-chip microcomputer CPU (central processing unit) and carrier communication power supply switching controls module links, and the output terminal of carrier communication power supply switching controls module and the power end of Power Line Carrier Communication Module link.
As shown in Figure 2, after power module described in the present embodiment inserts electric energy meter, at first via the rectification circuit rectification, pass through High frequency filter anti-jamming circuit filtering high frequency clutter again, after carry out the AC-DC conversion by switching power circuit, carry out the rectifying and wave-filtering voltage stabilizing again, obtain reliable and stable direct supply, give each module for power supply of electric energy meter.Described switching power circuit comprises coupling transformer circuit, width modulation driving circuit, is connected to feedback sample and control circuit thereof between width modulation driving circuit and the coupling transformer circuit; Described coupling transformer circuit is made up of coupling transformer T1, voltage stabilizing diode D3, diode D1 and diode D2; Described width modulation driving circuit comprises the pulse width modulating chip U1 of filter capacitor C1 and integrated MOS pipe; Described feedback sample and control circuit thereof are made up of resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, optocoupler OP1 and three-terminal voltage-stabilizing pipe D4.
The effect of above-mentioned voltage stabilizing diode D3, diode D1, diode D2 mainly is that the input voltage of coupling transformer T1 is clamped down within the specific limits, with protection pulse width modulating chip U1 energy operate as normal; Described pulse-width modulation circuit is adjusted the pulse width of input coupling transformer T1 according to the increase and decrease of circuital current, adjusts the size of output current by degenerative mode, and the proof load circuit working is stable; Described coupling transformer T1 secondary output end is connected to rectification filtering voltage stabilizing circuit, in order to the operating voltage of electric energy meter each several part circuit to be provided.
The output terminal of 1,5 liang of termination High frequency filter anti-jamming circuit of above-mentioned coupling transformer T1,2,5 ends of coupling transformer T1 are connected respectively to width modulation output terminal, the GND end of pulse width modulating chip U1,4 ends of coupling transformer T1 are connected to the voltage input end of pulse width modulating chip U1 by voltage stabilizing diode D3, the positive pole of the 1 terminating diode D1 of coupling transformer T1, the positive pole of the 2 terminating diode D2 of coupling transformer T1, the negative pole of diode D1 links to each other with the negative pole of diode D2; Capacitor C 1 is connected between the voltage input end and GND end of pulse width modulating chip U1 in the described width modulation driving circuit; The voltage input end of pulse width modulating chip U1 in the resistance R 1 one termination width modulation driving circuits of described feedback sample and control circuit thereof, one terminates at output terminal 4 ends of optocoupler OP1, output terminal 3 ends of optocoupler OP1 are connected to the feedback input end of pulse width modulating chip U1 in the width modulation driving circuit, the input termination three-terminal voltage-stabilizing pipe D4 of optocoupler OP1 and build-out resistor R2 thereof, resistance R 3, resistance R 4, resistance R 5; The plus earth of three-terminal voltage-stabilizing pipe D4 in described feedback sample and the control circuit thereof, the negative electrode of three-terminal voltage-stabilizing pipe D4 meets VDD through resistance R 3, the negative electrode of three-terminal voltage-stabilizing pipe D4 connects input end 2 ends of optocoupler OP1 in feedback sample and the control circuit thereof, the reference utmost point of three-terminal voltage-stabilizing pipe D4 is through resistance R 4 ground connection, the reference utmost point of three-terminal voltage-stabilizing pipe D4 meets VDD through resistance R 5, and resistance R 2 is connected between input end 1 end and VDD of optocoupler OP1 in feedback sample and the control circuit thereof.
Above-mentioned pulse width modulating chip U1 model is VIPER12A, is integrated with metal-oxide-semiconductor.
As shown in Figure 3, High frequency filter anti-jamming circuit in the foregoing description comprises compound temperature-sensitive R6, capacitor C 2, capacitor C 3, inductance L 1, inductance L 2, inductance L 3, inductance L 4, rectifier bridge DT, the external communication electricity is gone into circuit by live wire input L end and zero line input N termination, and capacitor C 2 is connected in parallel between live wire input L end and the zero line input N end; Live wire input L holds the input end that is connected to rectifier bridge DT through inductance L 1, inductance L 3, and live wire input N end is connected to another input end of rectifier bridge DT through inductance L 2, inductance L 4; Output terminal and the switching power circuit of rectifier bridge DT link, and capacitor C 3 is connected in parallel between the output terminal and switching power circuit of rectifier bridge DT.In the technique scheme, composite thermistor R6 is connected in parallel between live wire input L end and the zero line input N end, voltage dependent resistor (VDR) when input voltage is 420V among the composite thermistor R6 is being protected voltage with voltage clamp, the heat that its heating produces is passed to the thermistor among the composite thermistor R6, the thermistor resistance increases, dividing potential drop also increases, and output voltage is descended, and guarantees the operate as normal of electric energy meter; Inductance L 1, inductance L 2, inductance L 3 and inductance L 4 are used for suppressing Conduction Interference, reduce in the Switching Power Supply course of work influence to electrical network.
As shown in Figure 4, carrier communication power supply switching controls module in the foregoing description comprises resistance R 7, resistance R 8, capacitor C 4, capacitor C 5, triode BG1, triode BG2, three-terminal voltage-stabilizing pipe IC1 and compound diode D5, the control output end of described control signal end P1 and single-chip microcomputer CPU (central processing unit) links, control signal end P1 is connected to the base stage of triode BG1 through resistance R 7, the emitter of triode BG1 is connected to GND, the collector of triode BG1 is connected to the base stage of triode BG2 through resistance R 8, the collector of triode BG2 is connected to the first input end of compound diode D5, the emitter of triode BG2 is connected to the input end of three-terminal voltage-stabilizing pipe IC1, the output terminal of three-terminal voltage-stabilizing pipe IC1 is connected to second input end of compound diode D2, capacitor C 4 is connected between the input end and GND end of three-terminal voltage-stabilizing pipe IC1, and capacitor C 5 is connected between the output terminal and GND end of three-terminal voltage-stabilizing pipe IC1; The input end of described three-terminal voltage-stabilizing pipe IC1 and the output terminal of switching power circuit link, and the output terminal of compound diode D5 and the power end of Power Line Carrier Communication Module link.
When power line carrier communication just often, the emissive power that carrier communication module is described is enough big, can satisfy the requirement of carrier communication success ratio, this moment, the control signal end P1 of single-chip microcomputer CPU (central processing unit) was output as low level, triode BG1, triode BG2 all end, the 9V voltage that the 15V voltage signal of power module output is exported after three-terminal voltage-stabilizing pipe IC1 voltage stabilizing behind compound diode D5 as the power supply of carrier communication, to reduce the power consumption of carrier communication; When the carrier communication module emissive power is not enough, the control signal end P1 output high level of single-chip microcomputer CPU (central processing unit), triode BG1, triode BG2 conducting, the 15V voltage of power module output behind triode BG2 and compound diode D5 as the power supply of carrier communication, to improve the success ratio of carrier communication.
The content that this instructions is not described in detail belongs to this area professional and technical personnel's known prior art.
Claims (5)
1. single-phase guide rail type carrier electric energy meter, comprise power module, the single-chip microcomputer CPU (central processing unit), the electric energy metrical module, carrier communication power supply switching controls module, Power Line Carrier Communication Module, it is characterized in that: described power module comprises the High frequency filter anti-jamming circuit, switching power circuit and rectification filtering voltage stabilizing circuit, wherein the input end of the output terminal of High frequency filter anti-jamming circuit and switching power circuit links, the output terminal of switching power circuit and the input end of rectification filtering voltage stabilizing circuit link, the output terminal of rectification filtering voltage stabilizing circuit respectively with the single-chip microcomputer CPU (central processing unit), the power input of electric energy metrical module and carrier communication power supply switching controls module links, the control signal end of the control output end of single-chip microcomputer CPU (central processing unit) and carrier communication power supply switching controls module links, and the output terminal of carrier communication power supply switching controls module and the power end of Power Line Carrier Communication Module link.
2. single-phase guide rail type carrier electric energy meter according to claim 1 is characterized in that: feedback sample that is connected between described switch power supply route coupling transformer circuit, width modulation driving circuit, width modulation driving circuit and the coupling transformer circuit and control circuit thereof are formed; Described coupling transformer circuit is made up of coupling transformer T1, voltage stabilizing diode D3, diode D1 and diode D2; Described width modulation driving circuit is made up of the pulse width modulating chip U1 of filter capacitor C1 and integrated MOS pipe; Described feedback sample and control circuit thereof are made up of resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, optocoupler OP1 and three-terminal voltage-stabilizing pipe D4; The output terminal of 1,5 liang of termination High frequency filter anti-jamming circuit of described coupling transformer T1,2,5 ends of coupling transformer T1 are connected respectively to width modulation output terminal, the GND end of pulse width modulating chip U1,4 ends of coupling transformer T1 are connected to the operating voltage end of pulse width modulating chip U1 by voltage stabilizing diode D3, the positive pole of the 1 terminating diode D1 of coupling transformer T1, the positive pole of the 2 terminating diode D2 of coupling transformer T1, the negative pole of diode D1 links to each other with the negative pole of diode D2, and described coupling transformer T1 secondary output end is connected to rectification filtering voltage stabilizing circuit; Capacitor C 1 is connected between the operating voltage end and GND end of pulse width modulating chip U1 in the described width modulation driving circuit; The operating voltage end of pulse width modulating chip U1 in the resistance R 1 one termination width modulation driving circuits of described feedback sample and control circuit thereof, one terminates at output terminal 4 ends of optocoupler OP1, output terminal 3 ends of optocoupler OP1 are connected to the feedback input end of pulse width modulating chip U1 in the width modulation driving circuit, the input termination three-terminal voltage-stabilizing pipe D4 of optocoupler OP1 and build-out resistor R2 thereof, resistance R 3, resistance R 4, resistance R 5; The plus earth of three-terminal voltage-stabilizing pipe D4 in described feedback sample and the control circuit thereof, the negative electrode of three-terminal voltage-stabilizing pipe D4 connects its working power through resistance R 3, the negative electrode of three-terminal voltage-stabilizing pipe D4 connects input end 2 ends of optocoupler OP1 in feedback sample and the control circuit thereof, the reference utmost point of three-terminal voltage-stabilizing pipe D4 is through resistance R 4 ground connection, the reference utmost point of three-terminal voltage-stabilizing pipe D4 connects its working power through resistance R 5, and resistance R 2 is connected between input end 1 end and its working power of optocoupler OP1 in feedback sample and the control circuit thereof.
3. single-phase guide rail type carrier electric energy meter according to claim 2 is characterized in that: described pulse width modulating chip U1 model is VIPER12A, is integrated with metal-oxide-semiconductor.
4. single-phase guide rail type carrier electric energy meter according to claim 1, it is characterized in that: described High frequency filter anti-jamming circuit comprises compound temperature-sensitive R6, capacitor C 2, capacitor C 3, inductance L 1, inductance L 2, inductance L 3, inductance L 4, rectifier bridge DT, the external communication electricity is gone into circuit by live wire input L end and zero line input N termination, composite thermistor R6 is connected in parallel between live wire input L end and the zero line input N end, and capacitor C 2 is connected in parallel between live wire input L end and the zero line input N end; Live wire input L holds the input end that is connected to rectifier bridge DT through inductance L 1, inductance L 3, and live wire input N end is connected to another input end of rectifier bridge DT through inductance L 2, inductance L 4; Output terminal and the switching power circuit of rectifier bridge DT link, and capacitor C 3 is connected in parallel between the output terminal and switching power circuit of rectifier bridge DT.
5. single-phase guide rail type carrier electric energy meter according to claim 1, it is characterized in that: described carrier communication power supply switching controls module comprises resistance R 7, resistance R 8, capacitor C 4, capacitor C 5, triode BG1, triode BG2, three-terminal voltage-stabilizing pipe IC1 and compound diode D5, the control output end of described control signal end P1 and single-chip microcomputer CPU (central processing unit) links, control signal end P1 is connected to the base stage of triode BG1 through resistance R 7, the emitter of triode BG1 is connected to GND, the collector of triode BG1 is connected to the base stage of triode BG2 through resistance R 8, the collector of triode BG2 is connected to the first input end of compound diode D5, the emitter of triode BG2 is connected to the input end of three-terminal voltage-stabilizing pipe IC1, the output terminal of three-terminal voltage-stabilizing pipe IC1 is connected to second input end of compound diode D2, capacitor C 4 is connected between the input end and GND end of three-terminal voltage-stabilizing pipe IC1, and capacitor C 5 is connected between the output terminal and GND end of three-terminal voltage-stabilizing pipe IC1; The input end of described three-terminal voltage-stabilizing pipe IC1 and the output terminal of switching power circuit link, and the output terminal of compound diode D5 and the power end of Power Line Carrier Communication Module link.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200665670U CN201955393U (en) | 2011-03-15 | 2011-03-15 | Single-phase guide rail type carrier wave electric energy meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200665670U CN201955393U (en) | 2011-03-15 | 2011-03-15 | Single-phase guide rail type carrier wave electric energy meter |
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| CN201955393U true CN201955393U (en) | 2011-08-31 |
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| CN2011200665670U Expired - Fee Related CN201955393U (en) | 2011-03-15 | 2011-03-15 | Single-phase guide rail type carrier wave electric energy meter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183689A (en) * | 2011-03-15 | 2011-09-14 | 武汉盛帆电子股份有限公司 | Single-phase guide-rail-type carrier electric energy meter |
| CN102426289A (en) * | 2011-09-09 | 2012-04-25 | 武汉盛帆电子股份有限公司 | DC-DC-based resistance-capacitance single-phase cost control intelligent electric energy meter |
-
2011
- 2011-03-15 CN CN2011200665670U patent/CN201955393U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183689A (en) * | 2011-03-15 | 2011-09-14 | 武汉盛帆电子股份有限公司 | Single-phase guide-rail-type carrier electric energy meter |
| CN102426289A (en) * | 2011-09-09 | 2012-04-25 | 武汉盛帆电子股份有限公司 | DC-DC-based resistance-capacitance single-phase cost control intelligent electric energy meter |
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