CN205427040U - Single -phase static many rates of formula electric energy meter - Google Patents
Single -phase static many rates of formula electric energy meter Download PDFInfo
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- CN205427040U CN205427040U CN201521045576.6U CN201521045576U CN205427040U CN 205427040 U CN205427040 U CN 205427040U CN 201521045576 U CN201521045576 U CN 201521045576U CN 205427040 U CN205427040 U CN 205427040U
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Abstract
The utility model discloses a single -phase static many rates of formula electric energy meter, including casing and a central processing unit, electrical measurement and processing unit, LCD display element, RS485 interface unit, infrared communication unit, data memory cell, press unit and the electrical unit of setting in the casing, a central processing unit integration has the clock circuit, power monitoring circuit and watchdog circuit, electrical measurement and processing unit include single -phase metering modules, voltage sample module and current sample module, voltage sample module and current sample module are connected with single -phase metering modules respectively, single -phase metering modules, LCD display element, the RS485 interface unit, infrared communication unit, data memory cell, press unit is connected with a central processing unit respectively, electrical unit is connected in order to provide the electric power support with a central processing unit and single -phase metering modules respectively. The utility model has the advantages of the integrated level is high, the precision is high, with low costs, low power dissipation, dependable performance, compact structure, reasonable in design.
Description
Technical field
This utility model relates to a kind of electronic machine, especially relates to a kind of for Regulation and the single-phase electric energy meter with electric energy acquisition and telecommunications functions.
Background technology
In power system, particularly in In the distribution system of low voltage, the most non-linear, the use of impact load, bring challenge to the electric energy metrical of power system.And, along with industrial expansion and the progress of science and technology, the accurately metering of industry electric energy is had higher requirement by enterprise's productive technology management, energy-saving and cost-reducing is one of the outstanding feature of modern industry progress, improve electric energy effective rate of utilization, the quality of power supply is carried out comprehensive monitoring and administers the problem having become in the urgent need to address.
Realizing the comprehensive control to the quality of power supply, be necessary for realizing on-line analysis and the monitoring in real time of active power, effectively utilize level with understand electric energy, the electric power monitoring instrument as electric power management system ingredient plays vital effect wherein.Many defects that the single-phase electric energy meter that presently, there are there is also, main affected by electromagnetic field in the gatherer process show electric flux relatively big, impact essence acquisition precision, easily occur that electrical energy metering flies away phenomenon, and the less stable of its 485 communication.It addition, existing unit electric energy meter there is also cost height, the problem that cost performance is low, social benefit is the highest.As can be seen here, exploitation design is little by electromagnetic field effects, acquisition precision is high, the unit electric energy meter of stable performance is this area urgent problem.
Utility model content
The purpose of this utility model is to provide a kind of single-phase static formula multi-rate electric energy meter, it has integrated level height, precision height, low cost, low in energy consumption, dependable performance, compact conformation, advantage reasonable in design, this utility model has electric energy acquisition and telecommunications functions, can meet modern power network operational management or industry well from the demand changing management.
In order to solve single-phase electric energy meter of the prior art, it is big by electromagnetic field effects, acquisition precision is low, easily occur that electric energy metrical flies away phenomenon, and its 485 communication is unstable, the problem that cost performance is relatively low, a kind of single-phase static formula multi-rate electric energy meter that this utility model provides, including housing and CPU, electrical measurement and processing unit, LCD display unit, RS485 interface unit, infrared communication unit, data storage cell, push-button unit and the power subsystem being arranged in housing；Wherein, described CPU is integrated with clock circuit, power supply monitoring circuit and watchdog circuit, described electrical measurement and processing unit include single-phase measurement module, voltage sample module and current sample module, voltage sample module and current sample module are connected with single-phase measurement module respectively, single-phase measurement module, LCD display unit, RS485 interface unit, infrared communication unit, data storage cell, push-button unit are connected with CPU respectively, and power subsystem is connected with CPU and single-phase measurement module to provide electric power support respectively；
The voltage and current that described voltage sample module and current sample module are respectively used in observation circuit, and the voltage and current analog quantity monitored is transferred to single-phase measurement module；Voltage and current analog quantity is processed and the voltage and current digital quantity obtained is sent to CPU by single-phase measurement module, voltage and current digital quantity is sent to LCD display unit to show electrical measurement by CPU, and described electrical measurement is the digital quantity of voltage and current；
Described RS485 interface unit, setting up respectively have bi-directional exchanges of information passage between infrared communication unit and CPU, CPU is carried out data exchange by RXD485 and TXD485 and RS485 interface unit and by RS485 bus, electrical measurement data is sent to main website；Infrared communication unit is built with peripheral hardware smart machine for CPU and is connected；CPU carries out data access by data storage cell, and push-button unit is used for arranging input parameter to complete key display function.
Further, this utility model one single-phase static formula multi-rate electric energy meter, wherein, between described single-phase measurement module and CPU, it is connected by SPI full duplex synchronous communication bus mode.
Further, this utility model one single-phase static formula multi-rate electric energy meter, wherein, between described single-phase measurement module and CPU, it is provided with optical coupling isolation circuit.
Further, this utility model one single-phase static formula multi-rate electric energy meter, wherein, also include the carrier interface unit being connected with CPU, setting up between described carrier interface unit and CPU and have bi-directional exchanges of information passage, electrical measurement data is sent to main website for CPU by low-voltage power line by carrier interface unit.
Further, this utility model one single-phase static formula multi-rate electric energy meter, wherein, also includes pulse test unit and the testing circuit unit being connected with CPU, described pulse test unit exports for power test pulse, and described testing circuit unit is used for detecting operational factor.
Further, this utility model one single-phase static formula multi-rate electric energy meter, wherein, also include the multi-functional output unit being connected with CPU, described multi-functional output unit is connected to export data for setting up with external equipment.
nullFurther，This utility model one single-phase static formula multi-rate electric energy meter，Wherein，Described voltage sample module includes electric resistance partial pressure networking and filter circuit，Described resistor voltage divider circuit includes the R9 being sequentially connected in series、R10、R11、R12、R13、R14、R15 and R16，Described filter circuit includes the first filter circuit and the second filter circuit，First filter circuit is made up of resistance R5 in parallel and electric capacity C18，Second filter circuit is made up of resistance R6 in parallel and electric capacity C24，Resistance R5、Electric capacity C18、One end of resistance R6 and electric capacity C24 is connected with each other and ground connection，The other end of resistance R5 and electric capacity C18 is connected with the end points at electric resistance partial pressure networking and is jointly connected with the V3P pin of single-phase measurement module，The other end of resistance R6 and electric capacity C24 is connected with the V3N pin of single-phase measurement module.
nullFurther，This utility model one single-phase static formula multi-rate electric energy meter，Wherein，Described current sample module is provided with Current Transmit，Two, the former limit of Current Transmit pin is for being connected with test line，It is connected with the V1P pin of single-phase measurement module after a secondary even pin serial connection resistance R3 of Current Transmit，The pair of Current Transmit is connected with the V1N pin of single-phase measurement module after connecting another pin serial connection resistance R4，Circuit between resistance R3 and Current Transmit takes and is a little connected ground connection after resistance R7，Circuit between resistance R3 with single-phase measurement module takes and is a little connected ground connection after electric capacity C11，Circuit between resistance R4 and Current Transmit takes and is a little connected ground connection after resistance R8，Circuit between resistance R4 with single-phase measurement module takes and is a little connected ground connection after electric capacity C12.
Further, this utility model one single-phase static formula multi-rate electric energy meter, wherein, described Current Transmit uses copper-manganese current transformer.
Further, this utility model one single-phase static formula multi-rate electric energy meter, wherein, the device parameters that described each unit or module use is: CPU uses FM3307, single-phase measurement module uses RN8208G, and the LCD display circuit of LCD display unit uses DKE1332, RS485 interface unit to use ECH485NE, infrared communication unit uses L5IR5-B45, and data storage cell uses FM24C256A.
nullThis utility model one single-phase static formula multi-rate electric energy meter is compared with prior art，Have the advantage that (1) this utility model is by arranging CPU、Electrical measurement and processing unit、LCD display unit、RS485 interface unit、Infrared communication unit、Data storage cell、Push-button unit power subsystem，And it is integrated with clock circuit in CPU、Power supply monitoring circuit and watchdog circuit，Electrical measurement and processing unit is made to include single-phase measurement module、Voltage sample module and current sample module，Voltage sample module and current sample module are connected with single-phase measurement module respectively，Make single-phase measurement module、LCD display unit、RS485 interface unit、Infrared communication unit、Data storage cell、Push-button unit is connected with CPU respectively，Power subsystem is made to be connected with CPU and single-phase measurement module respectively to provide electric power support；This structure arranges and improves integrated level, can correspondingly reduce power consumption, make runnability more stable reliably, simultaneously by arranging RS485 interface unit, and by RS485 interface, electrical measurement can be sent to main website in actual use, meet MODBUS-RTU agreement, it is possible to complete different PLC, the networking of industrial control computer communication, extend range of application and compatibility from the demand changing management meeting modern power network or industry；By arranging infrared communication unit, make palm PC, PC or smart machine be achieved that by infrared communication unit and check meter, enhance function, improve work efficiency.As prioritization scheme, this utility model makes to be connected by SPI full duplex synchronous communication bus mode between single-phase measurement module and CPU, and it is provided with optical coupling isolation circuit between single-phase measurement module and CPU, this structure arranges the impact that can reduce electromagnetic field, improves precision.(2) this utility model is on the basis of meeting national grid unified standard, and be designed according to resident's actual electricity consumption situation, compact conformation, reasonable in design, and adopt LCD liquid crystal and directly display, have low in energy consumption, intuitive display, one-tenth are cheap, cost performance is high, easy for installation, the advantage of dependable performance.
This utility model one single-phase static formula multi-rate electric energy meter is described in further detail by illustrated embodiment below in conjunction with the accompanying drawings:
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model a kind of single-phase static formula multi-rate electric energy meter；
Fig. 2 is the connection diagram of CPU in this utility model a kind of single-phase static formula multi-rate electric energy meter；
Fig. 3 is electrical measurement and the connection diagram of processing unit in this utility model a kind of single-phase static formula multi-rate electric energy meter；
Fig. 4 is the connection diagram of LCD display unit in this utility model a kind of single-phase static formula multi-rate electric energy meter；
Fig. 5 is the connection diagram of RS485 interface unit in this utility model a kind of single-phase static formula multi-rate electric energy meter；
Fig. 6 is the connection diagram of this utility model a kind of single-phase static formula multi-rate electric energy meter mid-infrared communication unit；
Fig. 7 is the connection diagram of data storage cell in this utility model a kind of single-phase static formula multi-rate electric energy meter；
Fig. 8 is the connection diagram of carrier interface unit in this utility model a kind of single-phase static formula multi-rate electric energy meter.
Detailed description of the invention
The detailed description of the invention of a kind of single-phase static of this utility model formula multi-rate electric energy meter as shown in Figures 1 to 8, CPU 1, electrical measurement and the processing unit 2 including housing and being arranged in housing, LCD display unit 3, RS485 interface unit 4, infrared communication unit 5, data storage cell 6, push-button unit 7 power subsystem 8.CPU 1 is integrated with clock circuit, power supply monitoring circuit and watchdog circuit, electrical measurement and processing unit 2 include single-phase measurement module 201, voltage sample module 202 and current sample module 203, voltage sample module 202 and current sample module 203 is allowed to be connected with single-phase measurement module 201 respectively, allow single-phase measurement module 201, LCD display unit 3, RS485 interface unit 4, infrared communication unit 5, data storage cell 6, push-button unit 7 is connected with CPU 1 respectively, allow power subsystem 8 be connected to provide electric power support with CPU 1 and single-phase measurement module 201 respectively simultaneously.
In actual application, the voltage and current being respectively used in observation circuit by voltage sample module 202 and current sample module 203, and the voltage and current analog quantity monitored is transferred to single-phase measurement module 201, by single-phase measurement module 201 voltage and current analog quantity processed and the voltage and current digital quantity obtained is sent to CPU 1, then voltage and current digital quantity being sent to LCD display unit 3 to show electrical measurement by CPU 1, electrical measurement refers to the digital quantity of voltage and current.
And foundation has bi-directional exchanges of information passage respectively between RS485 interface unit 4, infrared communication unit 5 and CPU 1, CPU 1 is allowed to carry out data exchange by RXD485 and TXD485 with RS485 interface unit 4 and by RS485 bus, electrical measurement data to be sent to main website；Allow CPU 1 be built with peripheral hardware smart machine by infrared communication unit 5 be connected, to exchange signal or data；CPU 1 is allowed to carry out data access by data storage cell 6.Push-button unit 7 is mainly used in arranging input parameter to complete key display function.
Arranged by above structure and improve integrated level, can correspondingly reduce power consumption, make runnability more stable reliably, simultaneously by arranging RS485 interface unit, and by RS485 interface, electrical measurement can be sent to main website in actual use, meet MODBUS-RTU agreement, different PLC can be completed, the networking of industrial control computer communication, to meet modern power network operation management or industry from the demand changing management, and by arranging infrared communication unit, make palm PC, PC or smart machine are achieved that by infrared communication unit and check meter, enhance function, improve work efficiency.
It is connected by SPI full duplex synchronous communication bus mode as prioritization scheme, this detailed description of the invention allow between single-phase measurement module 201 and CPU 1, and is provided with optical coupling isolation circuit between single-phase measurement module 201 and CPU 1.This structure arranges the impact that can effectively reduce electromagnetic field, improves electrical measurement precision.
As prioritization scheme, this detailed description of the invention is also provided with the carrier interface unit 9 being connected with CPU 1, allow set up between carrier interface unit 9 and CPU 1 and have bi-directional exchanges of information passage, make CPU 1 by low-voltage power line, electrical measurement data can be sent to main website by carrier interface unit 9, enhance function and practicality.Same, it is also provided with pulse test unit 10, testing circuit unit 11 and the multi-functional output unit 12 being connected with CPU 1, power test pulse output can be carried out by pulse test unit 10, operational factor can be detected by testing circuit unit 11, can set up with external equipment to be connected by multi-functional output unit 12 and carry out data output, with expanded function, strengthen practicality.
nullAs further prioritization scheme，Voltage sample module 202 in this detailed description of the invention includes electric resistance partial pressure networking and filter circuit，Resistor voltage divider circuit includes the R9 being sequentially connected in series、R10、R11、R12、R13、R14、R15 and R16，Filter circuit includes the first filter circuit and the second filter circuit，First filter circuit is made up of resistance R5 in parallel and electric capacity C18，Second filter circuit is made up of resistance R6 in parallel and electric capacity C24，Allow resistance R5、Electric capacity C18、One end of resistance R6 and electric capacity C24 is connected with each other and ground connection，Allow the other end of resistance R5 and electric capacity C18 be connected with the end points at electric resistance partial pressure networking and be jointly connected with the V3P pin of single-phase measurement module 201，The other end of resistance R6 and electric capacity C24 is connected with the V3N pin of single-phase measurement module 201.
nullCurrent sample module 203 is provided with Current Transmit，Two, the former limit pin allowing Current Transmit in actually used is connected with test line，The pair allowing Current Transmit is connected with the V1P pin of single-phase measurement module 201 after connecting a pin serial connection resistance R3，Allow and be connected with the V1N pin of single-phase measurement module 201 after secondary another pin serial connection resistance R4 of Current Transmit，Circuit between resistance R3 and Current Transmit takes and is a little connected ground connection after resistance R7，Circuit between resistance R3 with single-phase measurement module 201 takes and is a little connected ground connection after electric capacity C11，Circuit between resistance R4 and Current Transmit takes and is a little connected ground connection after resistance R8，Circuit between resistance R4 with single-phase measurement module 201 takes and is a little connected ground connection after electric capacity C12.And allow Current Transmit use copper-manganese current transformer.The design of this structure takes full advantage of the anti-magnetic characteristic of copper-manganese, the balance that signal inputs can be ensured, drastically increase the performance of anti-external magnetic field interference, simultaneously by arranging resistance R7 and resistance R8 over the ground at current sample point, electricity when sampling line disconnects can be effectively prevented fly away phenomenon, it is ensured that stability and reliability.
It should be noted that, the device parameters that each unit described in this utility model or module can use is: CPU 1 uses FM3307, single-phase measurement module 201 uses RN8208G, the LCD display circuit of LCD display unit 3 uses DKE1332, RS485 interface unit 4 uses ECH485NE, infrared communication unit 5 uses L5IR5-B45, data storage cell 6 to use FM24C256A.Other devices of said function can also be used.
Above example is only the description carrying out preferred implementation of the present utility model; not this utility model is claimed the restriction that scope is carried out; on the premise of without departing from this utility model design principle and spirit; the various forms of deformation that this area engineers and technicians make according to the technical solution of the utility model, all should fall in protection domain determined by this utility model claims.
Claims (10)
1. a single-phase static formula multi-rate electric energy meter, including housing and CPU (1), electrical measurement and processing unit (2), LCD display unit (3), RS485 interface unit (4), infrared communication unit (5), data storage cell (6), push-button unit (7) and the power subsystem (8) being arranged in housing；It is characterized in that, described CPU (1) is integrated with clock circuit, power supply monitoring circuit and watchdog circuit, described electrical measurement and processing unit (2) include single-phase measurement module (201), voltage sample module (202) and current sample module (203), voltage sample module (202) and current sample module (203) are connected with single-phase measurement module (201) respectively, single-phase measurement module (201), LCD display unit (3), RS485 interface unit (4), infrared communication unit (5), data storage cell (6), push-button unit (7) is connected with CPU (1) respectively, power subsystem (8) is connected with CPU (1) and single-phase measurement module (201) to provide electric power support respectively；
The voltage and current that described voltage sample module (202) and current sample module (203) are respectively used in observation circuit, and the voltage and current analog quantity monitored is transferred to single-phase measurement module (201)；Voltage and current analog quantity is processed and the voltage and current digital quantity obtained is sent to CPU (1) by single-phase measurement module (201), voltage and current digital quantity is sent to LCD display unit (3) to show electrical measurement by CPU (1), and described electrical measurement is the digital quantity of voltage and current；
Setting up respectively between described RS485 interface unit (4), infrared communication unit (5) and CPU (1) and have bi-directional exchanges of information passage, CPU (1) is carried out data exchange by RXD485 and TXD485 with RS485 interface unit (4) and by RS485 bus, electrical measurement data is sent to main website；Infrared communication unit (5) is built with peripheral hardware smart machine for CPU (1) and is connected；CPU (1) carries out data access by data storage cell (6), and push-button unit (7) is used for arranging input parameter to complete key display function.
2. according to a kind of single-phase static formula multi-rate electric energy meter described in claim 1, it is characterised in that be connected by SPI full duplex synchronous communication bus mode between described single-phase measurement module (201) and CPU (1).
3. according to a kind of single-phase static formula multi-rate electric energy meter described in claim 2, it is characterised in that be provided with optical coupling isolation circuit between described single-phase measurement module (201) and CPU (1).
4. according to a kind of single-phase static formula multi-rate electric energy meter described in claim 1, it is characterized in that, also include the carrier interface unit (9) being connected with CPU (1), setting up between described carrier interface unit (9) and CPU (1) and have bi-directional exchanges of information passage, electrical measurement data is sent to main website for CPU (1) by low-voltage power line by carrier interface unit (9).
5. according to a kind of single-phase static formula multi-rate electric energy meter described in claim 1, it is characterized in that, also include pulse test unit (10) and the testing circuit unit (11) being connected with CPU (1), described pulse test unit (10) exports for power test pulse, and described testing circuit unit (11) is used for detecting operational factor.
6. according to a kind of single-phase static formula multi-rate electric energy meter described in claim 1, it is characterized in that, also including the multi-functional output unit (12) being connected with CPU (1), described multi-functional output unit (12) is connected to export data for setting up with external equipment.
null7. according to a kind of single-phase static formula multi-rate electric energy meter described in claim 1，It is characterized in that，Described voltage sample module (202) includes electric resistance partial pressure networking and filter circuit，Described resistor voltage divider circuit includes the R9 being sequentially connected in series、R10、R11、R12、R13、R14、R15 and R16，Described filter circuit includes the first filter circuit and the second filter circuit，First filter circuit is made up of resistance R5 in parallel and electric capacity C18，Second filter circuit is made up of resistance R6 in parallel and electric capacity C24，Resistance R5、Electric capacity C18、One end of resistance R6 and electric capacity C24 is connected with each other and ground connection，The other end of resistance R5 and electric capacity C18 is connected with the end points at electric resistance partial pressure networking and is jointly connected with the V3P pin of single-phase measurement module (201)，The other end of resistance R6 and electric capacity C24 is connected with the V3N pin of single-phase measurement module (201).
null8. according to a kind of single-phase static formula multi-rate electric energy meter described in claim 1，It is characterized in that，Described current sample module (203) is provided with Current Transmit，Two, the former limit of Current Transmit pin is for being connected with test line，It is connected with the V1P pin of single-phase measurement module (201) after a secondary even pin serial connection resistance R3 of Current Transmit，The pair of Current Transmit is connected with the V1N pin of single-phase measurement module (201) after connecting another pin serial connection resistance R4，Circuit between resistance R3 and Current Transmit takes and is a little connected ground connection after resistance R7，Circuit between resistance R3 with single-phase measurement module (201) takes and is a little connected ground connection after electric capacity C11，Circuit between resistance R4 and Current Transmit takes and is a little connected ground connection after resistance R8，Circuit between resistance R4 with single-phase measurement module (201) takes and is a little connected ground connection after electric capacity C12.
9. according to a kind of single-phase static formula multi-rate electric energy meter described in claim 8, it is characterised in that described Current Transmit uses copper-manganese current transformer.
10. according to a kind of single-phase static formula multi-rate electric energy meter described in any one of claim 1-8, it is characterized in that, the device parameters that described each unit or module use is: CPU (1) uses FM3307, single-phase measurement module (201) uses RN8208G, the LCD display circuit of LCD display unit (3) uses DKE1332, RS485 interface unit (4) uses ECH485NE, infrared communication unit (5) uses L5IR5-B45, and data storage cell (6) uses FM24C256A.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521045576.6U CN205427040U (en) | 2015-12-15 | 2015-12-15 | Single -phase static many rates of formula electric energy meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521045576.6U CN205427040U (en) | 2015-12-15 | 2015-12-15 | Single -phase static many rates of formula electric energy meter |
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| CN205427040U true CN205427040U (en) | 2016-08-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107102202A (en) * | 2017-06-06 | 2017-08-29 | 宁波恒力达科技有限公司 | A kind of direct gauge assembly of single-phase high voltage high current |
| CN107276230A (en) * | 2017-07-19 | 2017-10-20 | 沈阳博来德滋电子科技有限公司 | The outlet power administrative unit of the entrance of electronic single-phase one/ten and its management method |
| CN111157774A (en) * | 2020-03-10 | 2020-05-15 | 南京立超软件科技有限公司 | Single-phase multi-rate electric energy meter with Bluetooth module |
-
2015
- 2015-12-15 CN CN201521045576.6U patent/CN205427040U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107102202A (en) * | 2017-06-06 | 2017-08-29 | 宁波恒力达科技有限公司 | A kind of direct gauge assembly of single-phase high voltage high current |
| CN107276230A (en) * | 2017-07-19 | 2017-10-20 | 沈阳博来德滋电子科技有限公司 | The outlet power administrative unit of the entrance of electronic single-phase one/ten and its management method |
| CN111157774A (en) * | 2020-03-10 | 2020-05-15 | 南京立超软件科技有限公司 | Single-phase multi-rate electric energy meter with Bluetooth module |
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