CN202649286U - Multifunctional electric power meter based on network - Google Patents
Multifunctional electric power meter based on network Download PDFInfo
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- CN202649286U CN202649286U CN 201220344770 CN201220344770U CN202649286U CN 202649286 U CN202649286 U CN 202649286U CN 201220344770 CN201220344770 CN 201220344770 CN 201220344770 U CN201220344770 U CN 201220344770U CN 202649286 U CN202649286 U CN 202649286U
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Abstract
A multifunctional electric power meter based on network comprises a power module, an alternative current analog signal sampling module, a microprocessor unit, a memory module, a key signal processing module, a display module, and a communication module; wherein the microprocessor unit is respectively connected to the alternative current analog signal sampling module, the memory module, the key signal processing module, and the display module, and connected to an external device by the communication module; the power module outputs two paths of isolated direct current voltages, one path is respectively connected with the alternative current analog signal sampling module, the microprocessor unit, the memory module, the key signal processing module, and the display module, the other path is connected with the communication module. The multifunctional electric power meter networks to form an intelligent distribution monitor system, the sampling precision is high, the parameter programming setting is performed on site, thus the centralized monitor and effective management of a power utilization device are achieved.
Description
Technical field
The present invention relates to the technology of instrument and meter field, particularly relate to a kind of network multifunctional power meter.
Background technology
Needs along with the power construction of the development of China's Electric automation technology and various places, intelligent distribution system take " four is distant " monitoring of remote measurement, remote signalling, remote control, remote regulating as basic demand progressively popularizes in every field, and is applied in national key construction project, high-rise building, large public building and the changeable electric user of institute and the Unmanned Transformer Place as the standard configuration of the following transformation and distribution system of 10KV.Replace original distribution system station pipe manually on duty, the manual workings such as delay judgement, excision and record of making an inventory instrument, fault, make reliability, security, rapidity, the real-time of electric power transformation and distribution system obtain the change of matter.
Commercial power is extensive, consumption is large, power consumption is many, requires power supply safety reliable, and various parameters of electric power are qualified, and running technology is in good condition, and meets the environmental protection and energy saving requirement, and this just need to carry out Real Time Monitoring to supply network.Network multifunctional power meter based on field bus technique has replaced gradually traditional pointer instrument and not with the simply discrete digital display meter of communication function, can satisfy the user concentrates Real Time Monitoring to power supply-distribution system demand.Result according to monitoring effectively controls, and improves the complete reliability of power supply, helps the user to improve power consumption efficiency, energy savings, reduce production costs, enhance one's market competitiveness.All trades and professions to novel smart instrumentation in the urgent need to, particularly in the energy management system of all trades and professions, network multi-functional instrument telogenesis requisite key equipment, use more and more extensive.
Summary of the invention
Technical matters to be solved by this invention is: a kind of based on network multifunctional electric meter is provided, it can be networked and form the intelligent power distribution supervisory system, and sampling precision is high, can carry out the Parameter Programming setting in the scene, can compatible available for different connection modes, network organizing is used simple, has solved the multinode of data acquisition, the Communication of long distance, has reached consumer Centralized Monitoring and effectively management.
Technical scheme of the present invention is:
A kind of based on network multifunctional electric meter is characterized in that, comprises power module, AC analogue signal sampling module, microprocessor unit, memory module, push button signalling processing module, display module and communication module; Described microprocessor unit connects respectively AC analogue signal sampling module, memory module, push button signalling processing module and display module, and described microprocessor unit also is connected with external unit by described communication module; The DC voltage of described power module output two-way isolation, one the tunnel connects respectively AC analogue signal sampling module, microprocessor unit, memory module, push button signalling processing module and display module, another road connecting communication module, described communication module comprises RS485 wire communication unit and ZIGBEE radio communication unit, and described ZIGBEE radio communication unit adopts the CC2430 module; Described AC analogue signal sampling module is used for the AC three-phase voltage current signal of sampling is inputed to microprocessor unit, the key information that described push button signalling processing module is used for gathering inputs to microprocessor unit, described memory module is used for user program parameters and the calibration parameter of microprocessor unit collection are preserved, described microprocessor unit is used for electric quantity data and the parameter of acquisition process are exported by display module, and described communication module is used for microprocessor unit and external unit carries out wired and the wireless data exchange.
The utility model has been compared with existing technology following beneficial effect:
Network multifunctional power meter of the present utility model comprises power module, AC analogue signal sampling module, microprocessor unit, memory module, push button signalling processing module, display module, communication module.After the three-phase alternating voltage of electric power networks, current signal are nursed one's health through AC analogue signal sampling module, enter microprocessor unit and carry out mould/number conversion and calculating, by display module the electric parameter data of measuring are shown, conveniently check and understand the ruuning situation of consumer; Memory module is preserved important calibration parameter and the program parameters at user scene based on ferroelectric memory, and unlimited erasable, power down can not lost yet; The push button signalling processing module is convenient to the user scene and is carried out the Parameter Programming setting; Communication module comprises wired and radio-cell, employing standard communications protocol, good compatibility is easy to networking, makes many instrument networkings form the intelligent power distribution supervisory system, can realize the reliable communicating of multinode, long distance, reach the Centralized Monitoring of consumer and effectively management.This network multifunctional power meter supports to be undertaken by communication port in the charged situation function of online upgrading, carries out maintenance upgrade in the situation of the operation power that do not destory the scene, and is more economical safer.AC analogue signal sampling module adopts with the frequency sampling technology, has greatly improved sampling precision, satisfies the application of different frequency electric power networks.The utility model has also adopted modular design proposal, four pcb boards are arranged: master control and display board, power panel, communication board, sampling plate, adopt the plug-in type terminal to be connected between plate and the plate, not only can save aborning the convenient production of operation, also make things convenient for function upgrading and maintenance at the electric power scene.
Description of drawings
Fig. 1 is the structural representation of network multifunctional power meter embodiment of the present invention.
Embodiment
Embodiment to network multifunctional power meter of the present invention is described further below in conjunction with accompanying drawing.
As shown in Figure 1, be the structural representation of network multifunctional power meter of the present invention.A kind of network multifunctional power meter comprises power module, AC analogue signal sampling module, microprocessor unit, memory module, push button signalling processing module, display module, communication module; Microprocessor unit connects respectively AC analogue signal sampling module, memory module, push button signalling processing module, display module, and is connected with external unit by communication module; AC analogue signal sampling module samples AC three-phase voltage current signal inputs to microprocessor unit, the push button signalling processing module gathers key information and inputs to microprocessor unit, and memory module is preserved user program parameters and the calibration parameter of microprocessor unit collection; Electric quantity data and the parameter of microprocessor unit collection are exported by display module; Communication module makes microprocessor unit and external unit carry out exchanges data.Described display module is charactron and LED lamp display module, and described communication module is the RS485 communication module.
Power module is supported the alternating current-direct current input of wide region, the DC voltage of output two-way isolation, one the tunnel connects respectively AC analogue signal sampling module, microprocessor unit, memory module, push button signalling processing module, charactron and LED lamp display module, and another road connects the RS485 communication module.
AC analogue signal sampling module comprises CT current transformer and voltage pressure sampling circuit.AC analogue signal sampling module is carried out convergent-divergent with the alternating voltage current signal of electric power networks, the reference voltage that this positive negative signal is applied high-precision and high-stability carries out bias treatment, become positive signal, by low-pass filter circuit, enter microprocessor unit again; And adopt with the frequency sampling technology, when frequency change, automatically changing sample frequency, voltage and current signal that can more accurate reaction reality obtains high-precision electric quantity data; Adopt the sampling channel drift to put dynamic self-calibration function at sampling algorithm, reduced the direct current biasing error of sampling channel, greatly improved measuring accuracy.The High-Speed High-Accuracy AD processing module of microprocessor unit adopts multiprecision arithmetic to calculate, sampled signal is become digital quantity signal, obtain the effective value data such as electric current and voltage power, adopted DMA direct memory access technology to carry out data transmission for the sampled data after the analog to digital conversion, reduce the expense of microprocessor unit, improved the real-time of parameter metering and the reliability of whole device.
Memory module adopts the not volatile ferroelectric storage cell of unlimited erasable power down to carry out data and preserves, the significant datas such as the calibration parameter of user's parameters and instrument are kept at this module, these important data carry out the primary area and preserve the backup area two-region, this module has realized the fault self-checking function at software simultaneously, in service the two-region data are carried out verification and inspection, whether decision data is correct, destroyed such as data, then point out mistake, import default parameters and recover initial setting up, the device reliability of operation is provided greatly.
Charactron and LED lamp display module comprise charactron window and LED lamp, described LED lamp comprises data item lamp, morse signal light, negative value pilot lamp, thousand K pilot lamp and million M pilot lamp, and the data item lamp comprises that the data of voltage, electric current, active power, reactive power, power factor (PF), applied power, frequency, active electrical degree, idle electric degree show.Morse signal light can be at the scene the unusual contact of orientation and communication fast, carry out the timely eliminating of fault, for example, the morse signal light expression communication of going out is disconnected, lamp flicker in a second once represents normal communication, lamp flicker in half second once represents communication abnormality.Also comprise total relative harmonic content off-limit alarm lamp, be used to indicate when total relative harmonic content is out-of-limit and report to the police, it is defective that the user can locate the quality of power supply in certain bar loop fast, and fault obtains the purpose that energy savings is got rid of hidden danger to carry out the transformation of circuit and equipment by analysis.The charactron window of this display module is used for showing in real time the electrical parameter of electric power networks: voltage, electric current, power, frequency etc.The user can enter Parameter Programming by push button signalling processing module triggering button pattern is set, and carries out checking and arranging of operational factor by the cooperation of button, and the parameter that sets is kept at memory module.
Communication module provides a kind of economy reliable communication modes, adopts standard MODBUS-RTU and ZIGBEE communications protocol, and good compatibility is easy to networking, can realize the reliable communicating of multinode, long distance.Convenient access intelligent distribution system is realized the function of " four is distant ".The measurement data of each monitor node can a distant place be read on the monitoring backstage, revises parameter, and Long-distance Control realizes the effective purpose of management of consumer Centralized Monitoring.The utility model also utilizes communication module, has realized being undertaken by communication port in the charged situation function of online upgrading, carries out maintenance upgrade in the situation of the operation power that do not destory the scene, and is more economical safer.
Described network multifunctional power meter has also adopted modular design proposal, comprises four pcb boards: master control and display board, power panel, communication board, sampling plate; Master control and display board comprise microprocessor unit, memory module, push button signalling processing module, display module, and power panel comprises power module, and sampling plate comprises AC analogue signal sampling module, and communication board comprises communication module; Adopt the plug-in type terminal to connect between four pcb boards, not only can save aborning the convenient production of operation, also make things convenient for function upgrading and maintenance at the electric power scene.
More than network multifunctional power meter provided by the utility model is described in detail.Use specific embodiment herein principle of the present utility model and embodiment are set forth, the explanation of more than implementing just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for those skilled in the art, according to thought of the present utility model, still can make amendment or be equal to replacement the invention in specific embodiments and applications; In sum, this description should not be construed as restriction of the present utility model, and all do not break away from technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all is encompassed in the middle of the protection domain of the invention patent.
Claims (1)
1. a based on network multifunctional electric meter is characterized in that, comprises power module, AC analogue signal sampling module, microprocessor unit, memory module, push button signalling processing module, display module and communication module; Described microprocessor unit connects respectively AC analogue signal sampling module, memory module, push button signalling processing module and display module, and described microprocessor unit also is connected with external unit by described communication module; The DC voltage of described power module output two-way isolation, one the tunnel connects respectively AC analogue signal sampling module, microprocessor unit, memory module, push button signalling processing module and display module, another road connecting communication module, described communication module comprises RS485 wire communication unit and ZIGBEE radio communication unit, and described ZIGBEE radio communication unit adopts the CC2430 module; Described AC analogue signal sampling module is used for the AC three-phase voltage current signal of sampling is inputed to microprocessor unit, the key information that described push button signalling processing module is used for gathering inputs to microprocessor unit, described memory module is used for user program parameters and the calibration parameter of microprocessor unit collection are preserved, described microprocessor unit is used for electric quantity data and the parameter of acquisition process are exported by display module, and described communication module is used for microprocessor unit and external unit carries out wired and the wireless data exchange.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220344770 CN202649286U (en) | 2012-07-17 | 2012-07-17 | Multifunctional electric power meter based on network |
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| CN 201220344770 CN202649286U (en) | 2012-07-17 | 2012-07-17 | Multifunctional electric power meter based on network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116788A (en) * | 2015-07-10 | 2015-12-02 | 成都振中电气有限公司 | Power distribution monitoring terminal based on ZigBee and Beidou communication |
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2012
- 2012-07-17 CN CN 201220344770 patent/CN202649286U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116788A (en) * | 2015-07-10 | 2015-12-02 | 成都振中电气有限公司 | Power distribution monitoring terminal based on ZigBee and Beidou communication |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: TIANJIN BINHAI NEW AREA SHENGRUAN TECHNOLOGY CO., LTD. Document name: Notification to Pay the Fees |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20140717 |
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| EXPY | Termination of patent right or utility model |