CN204241591U - Based on the low-voltage cabinet electrical energy parameter on-Line Monitor Device of carrier communication - Google Patents
Based on the low-voltage cabinet electrical energy parameter on-Line Monitor Device of carrier communication Download PDFInfo
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- CN204241591U CN204241591U CN201420726644.4U CN201420726644U CN204241591U CN 204241591 U CN204241591 U CN 204241591U CN 201420726644 U CN201420726644 U CN 201420726644U CN 204241591 U CN204241591 U CN 204241591U
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Abstract
The utility model provides the low-voltage cabinet electrical energy parameter on-Line Monitor Device based on carrier communication, comprises power module and the sampling module be connected successively, signal processing module, CPU module and display memory module; Described sampling module is by the low-voltage power line communication of carrier module and low-voltage cabinet; Described carrier module is integrated by power line interface signal drive circuit, and described driving circuit comprises modem chip; Described CPU module comprises PIC single chip microcomputer chip, modulus conversion chip and data registration unit, and described signal processing module comprises arm processor and active low-pass filter, greatly can save peripheral circuit, realizes efficient integrated functionality.The utility model collection is measured, monitor and be protected in the whole body, and the low-voltage power line by carrier communication interface and low-voltage cabinet forms intelligentized information monitoring protection device, has higher industrial application and is worth.
Description
Technical field
The utility model relates to low-voltage cabinet electrical energy parameter monitoring device technical field, particularly relates to the low-voltage cabinet electrical energy parameter on-Line Monitor Device based on carrier communication.
Background technology
Often there is a lot of defect in the electrical energy parameter monitoring device on current market: master chip not only needs to bear data processing, also to realize the function such as communication and man-machine interaction simultaneously, bear heavier, often to sacrifice the real-time of electrical energy parameter monitoring index and accuracy for cost; Electrical energy parameter monitoring function is more single, cannot meet the needs to electrical energy parameter comprehensive assessment, poor practicability; Communication modes is single, is unfavorable for the network monitoring realizing electrical energy parameter in embody rule at some special monitoring point, simultaneously can not signal by oneself, thus intelligent with practicality in need to improve.
Apply for providing a kind of distributed electrical energy quality on-Line Monitor Device based on dual processors for the utility model of 200820170703.9, comprise signal conditioning circuit module, AD sample circuit module, PIC single chip microcomputer data processing module, ARM upper managing computer module, Power Line Carrier Communication Module and LCD MODULE; AD sample circuit realizes the synchronized sampling to 6 passage electric power signals; Utilize the high speed data transfer of the existing PIC single chip microcomputer module of special HPI main frame cause for gossip and ARM intermodule; ARM module adopts WINCE as operating system and Software Development Platform; Power Line Carrier Communication Module is in order to realize the data communication with remote monitoring center.This device can realize in real time, accurate quality of power supply measuring and analysis, and has close friend and manage easily and interactive interface, is applicable to the electric energy quality monitoring of single-point type or distributed Electric Power Quality On-line Monitor System.
Application be 201120530199.0 utility model disclose a kind of electric energy quality on-line monitoring device based on dual processors, comprise the data acquisition module for the outside three-phase voltage current signal of Collect conversion, for pressing the Data Management Analysis module that Analysis of Indexes of Power Quality calculates to the information of Collect conversion, dual port RAM, control system, CPLD circuit module, peripheral module, described peripheral module comprises the data memory module for storing Monitoring Data, for uploading the communication module of Monitoring Data and the display module for showing Monitoring Data, described data acquisition module, Data Management Analysis module, dual port RAM, control system, CPLD circuit module is connected successively, described CPLD circuit module respectively with data memory module, communication module, display module is connected, in described Data Management Analysis module and control system, there is separately independently cpu chip respectively.The utility model can improve the monitoring capability to electrical energy parameter.
But on the one hand, in function and intellectuality, still make progress these electrical energy parameter monitoring devices space, can realize the integrated use of the several functions such as self diagnosis, failure logging, data communication completely.
Utility model content
The purpose of this utility model is to provide the low-voltage cabinet electrical energy parameter on-Line Monitor Device based on carrier communication, has the several functions such as self diagnosis, failure logging, data communication, and resolving for electrical energy parameter provides convenient with fault analysis, and has higher reliability.
The technical scheme adopted for realizing the purpose of this utility model is: based on the low-voltage cabinet electrical energy parameter on-Line Monitor Device of carrier communication, comprise power module and the sampling module be connected successively, signal processing module, CPU module and display memory module, described power module is connected with described signal processing module, described CPU module respectively; Described sampling module comprises voltage transformer (VT) and zero sequence current mutual inductor, and described sampling module is by the low-voltage power line communication of carrier module and low-voltage cabinet.
Described CPU module comprises PIC single chip microcomputer chip, modulus conversion chip and data registration unit, and described signal processing module comprises arm processor and active low-pass filter.
Described carrier module is integrated by power line interface signal drive circuit, and described driving circuit comprises modem chip.
Described display memory module comprises digital-scroll technique unit, and described digital-scroll technique unit connects serial communication interface, human-machine interface unit and storer respectively.
Described digital-scroll technique unit comprises data setting panel and LED display panel.
Described data setting panel comprises several data input button and order button.
Described power module comprises photovoltaic array plate, and described photovoltaic array plate connects accumulator.
The signals collecting of the utility model monitoring device is support is the carrier module of core by modem chip, voltage and current signal is gathered from low-voltage power line, the power line port be connected with sampling module adopts serial interface mode, the multichannel data that interface connects modem chip controls and data transmit-receive pin, as data transmit-receive TxD, RxD, Schema control RxTx, REG_DATA, clock control CLR/T etc., realize the transmitting-receiving of sampled signal.
Monitoring device processor core is PIC single chip microcomputer chip and arm processor, it is the voltage and current signal being gathered low-voltage power line by potential and current transformers, the simulating signal obtained after filtering device process is input to A/D converter, through analog to digital conversion, simulating signal is converted to digital signal, PIC single chip microcomputer reads the result of conversion, and based on electrical energy parameter performance index, completes the corresponding computing such as voltage, electric current, power; Order is sent by serial communication to PIC single chip microcomputer again, the data that PIC single chip microcomputer loopback is measured and operation result by ARM; Simultaneously, the leakage current measuring ability being equal to leakage relay can also be realized by PIC single chip microcomputer, the detection of electric leakage signal has been come by zero sequence current mutual inductor, the leakage current of the protected circuit detected can be converted to the ac voltage signal of millivolt level by it, a DC voltage is obtained again by signal rectification, amplification and filtering, coordinate corresponding control circuit to drive and perform loop, to realize the control object of tripping protection line powering power supply; Arm processor transplants embedded real-time operating system, realizes multi-task scheduling, upload to host computer by Ethernet, and shown in this locality by touch-screen human-computer interaction interface.Monitoring device adopts bi-processor architecture, Slave Parallel disposal system is formed by 32 arm processors and PIC single chip microcomputer chip, by arm processor complete to the management of various peripheral hardware with communicate, the computing of PIC single chip microcomputer data acquisition, the advantage of two kinds of chips can be not fully exerted, and work efficiency is high.
The zero sequence current mutual inductor of this device adopts high performance permalloy as the magnetic material of iron core, feature has higher magnetoconductivity under low-intensity magnetic field, this characteristic exceedes common ferrosilicon iron core even FERRITE CORE, with guarantee current transformer export have in certain scope good linear.The factor mainly circuit power frequency odd-multiple harmonic current of influential system reliability, therefore signal processing module adopts one group of active low-pass filter, this wave filter main elimination odd harmonic AC compounent, then carries out ac-dc conversion process, to guarantee the correct operation of electrical energy parameter monitoring device.
CPU is as the core component of relay, comprise PIC single chip microcomputer, modulus conversion chip and data registration unit, it is the CPU (central processing unit) of whole system, the fetching of system, judgement, execution are all completed by it, modulus conversion chip carries out digitizing conversion, to adapt to the process needs of PIC single chip microcomputer to the current signal through signal transacting after sampling; Data registration unit mainly refers to FLASHROM, is used for the subroutine code of storage enclosure in PIC single chip microcomputer, can not change in operational process.Display memory module comprises digital-scroll technique unit, serial communication interface, human-machine interface unit and storer, digital-scroll technique unit is used for the delay time of circuit leakage current and system trip, form primarily of digital driving circuit and LED digital display, serial communication interface adopts the MAX422 of MAXIM company to expand serial communication port, realizes data-transformation facility; Man-machine interface circuit mainly completes the setting of protection seting value and system delay trip time; it is the control panel relying on PIC single chip microcomputer and connect expansion; the data pacing to cpu package data register can be realized; storer adopts band EEPROM (Electrically Erasable Programmable Read Only Memo) EEPROM; be used for preserving user data; can change in operational process, the effect from line item can be realized, and externally can carry out data transmission by port.Power module is arranged photovoltaic array plate, photovoltaic array plate connects accumulator, can pass through sun power supply source, thus increases continuation and the environmental protection of system.
Programmable microprocessor comprises data register, can be connected with display, data setting panel by man-machine interface, receive the setting valve data that data setting panel inputs, and put into the data register of programmable microprocessor, call when facilitating the data processing subroutine of programmable microprocessor to carry out algorithm sampling.Wherein, programmable microprocessor program comprises master routine, interrupt service subroutine, Interruption service subprogram, data processing subroutine, all can adopt C language design, and be packaged in the data-carrier store of programmable microprocessor and conveniently directly to call.Wherein, the initial work of the main completing port of system master routine, timer, constant, variable and other amounts; Interrupt service subroutine, mainly according to the overflow position state of data register, judges whether data overflow, and then proceeds to interrupt entrance subroutine as overflowed; The main completion timing of Interruption service subprogram interrupts sampling task, and 1 ms carries out 1 process, and often return continuous 6 samplings, sampled result is stored in specified memory unit; Data processing subroutine mainly completes and asks statistical average, carries out data and compares, thus determine accurate measurements; Data input button in data setting panel, comprises ' 0 ' to ' 9 ' ten arabic numeral enter key, order button includes alarm settings, shut down set, return, confirm, machine open/close, automatically detection etc.
Electrical energy parameter monitoring device of the present utility model forms a real-time data acquisition system; the data of collection can be carried out real-time analysis, computing and process; be convenient to control; selectivity and conformability good; collection is measured, monitor and be protected in all over the body; form intelligentized monitoring and protection and information management system by communication interface and computer networking, there is higher industrial application and be worth.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1: based on the low-voltage cabinet electrical energy parameter on-Line Monitor Device of carrier communication, comprise power module 1 and the sampling module 2 be connected successively, signal processing module 3, CPU module and display memory module 5, power module 1 is connected with signal processing module 3, CPU module respectively; Sampling module 2 comprises voltage transformer (VT) 11 and zero sequence current mutual inductor 12, and sampling module is communicated with the low-voltage power line 20 of low-voltage cabinet by carrier module 19; CPU module comprises PIC single chip microcomputer chip 6, modulus conversion chip 7 and data registration unit 8, and signal processing module 3 comprises arm processor 9 and active low-pass filter 10; Carrier module 19 is integrated by power line interface signal drive circuit, and driving circuit comprises modem chip; Display memory module comprises digital-scroll technique unit, and digital-scroll technique unit connects serial communication interface 14, human-machine interface unit 15 and storer 16 respectively; Digital-scroll technique unit comprises data setting panel 17 and LED display panel 18; Data setting panel comprises several data input button and order button; Power module comprises photovoltaic array plate 13, and photovoltaic array plate connects accumulator 4.
In order to realize the rapidity of data processing, modem chip can select ST7538 carrier chip, its functional pin and each circuit component form Signal reception path and signal transmission path; PIC single chip microcomputer 3207 chip can be selected as the core processor of sampling module, and the crystal oscillator of chip can reach 40MHz, adopts 3.3V low supply voltage, has the flash of 32K word, the RAM of 2.5K, 64K word program area, data field; There are 40 independently programmable general purpose I/O; Serial communication modular (SCI), 2 task manager EVA and EVB; There are 5 external interrupt, be respectively power drives protection interruption, reset interrupt, non-maskable interrupts etc.Because its 10 built-in A/D modular converters cannot meet the needs of electrical energy parameter analysis, need external modulus conversion chip, expand 6 Channel Synchronous ADS8364 chips of 16 precision in outside to carry out Analog-digital Converter, promote sampling precision.
Arm processor can adopt S3C1440 chip, this is a processor based on ARM920T core, adopt 16/32 risc processor, there is external memory controller, lcd controller, 4 channel DMA controller, triple channel UART, 2 passage SPI, 2 tunnels are USB main equipment chip at full speed, can transplant LINUX system and set up WEB server.
In the utility model, PIC single chip microcomputer mainly completes collection and the calculating of field data, comprise electrical energy parameter parameter detecting and leakage current detection, the control command of real-time response ARM, and image data and result of calculation are sent to ARM, software development can adopt compilation and C language hybrid programming to realize on PIC single chip microcomputer Integrated Development Environment CCS; ARM performs management and the control of whole system, control command is sent to PIC single chip microcomputer, various data and information are passed in requirement back, man-machine interaction part is used for realizing intelligentized menu mode man-machine interface, managerial personnel are facilitated to inquire about Monitoring Data, take embedded Linux as Software Development Platform, adopt C and C Plus Plus to complete exploitation to the application program such as WEB server and QT.
After monitoring device has designed, the three-phase voltage of 380V can be utilized to carry out actual test to it, touch-screen display energy monitor and leakage current monitoring key frame, data input button in data setting panel, comprise ' 0 ' to ' 9 ' ten arabic numeral enter key, order button includes alarm settings, shut down setting, return, confirm, machine open/close, automatic detection etc., it is every 10S that automatic detection mainly sets, data refresh once automatically, interval time can be arranged by arabic numeral panel, thus realize self diagnosis, failure logging, the several functions such as data communication, resolve for electrical energy parameter and provide convenient with fault analysis, and there is higher reliability.
Claims (7)
1. based on the low-voltage cabinet electrical energy parameter on-Line Monitor Device of carrier communication, it is characterized in that: comprise power module and the sampling module be connected successively, signal processing module, CPU module and display memory module, described power module is connected with described signal processing module, described CPU module respectively; Described sampling module comprises voltage transformer (VT) and zero sequence current mutual inductor, and described sampling module is by the low-voltage power line communication of carrier module and low-voltage cabinet.
2. electrical energy parameter on-Line Monitor Device as claimed in claim 1, it is characterized in that: described CPU module comprises PIC single chip microcomputer chip, modulus conversion chip and data registration unit, described signal processing module comprises arm processor and active low-pass filter.
3. electrical energy parameter on-Line Monitor Device as claimed in claim 1, it is characterized in that: described carrier module is integrated by power line interface signal drive circuit, described driving circuit comprises modem chip.
4. electrical energy parameter on-Line Monitor Device as claimed in claim 1, it is characterized in that: described display memory module comprises digital-scroll technique unit, described digital-scroll technique unit connects serial communication interface, human-machine interface unit and storer respectively.
5. electrical energy parameter on-Line Monitor Device as claimed in claim 4, is characterized in that: described digital-scroll technique unit comprises data setting panel and LED display panel.
6. electrical energy parameter on-Line Monitor Device as claimed in claim 5, is characterized in that: described data setting panel comprises several data input button and order button.
7. electrical energy parameter on-Line Monitor Device as claimed in claim 1, is characterized in that: described power module comprises photovoltaic array plate, and described photovoltaic array plate connects accumulator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420726644.4U CN204241591U (en) | 2014-11-28 | 2014-11-28 | Based on the low-voltage cabinet electrical energy parameter on-Line Monitor Device of carrier communication |
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| CN201420726644.4U CN204241591U (en) | 2014-11-28 | 2014-11-28 | Based on the low-voltage cabinet electrical energy parameter on-Line Monitor Device of carrier communication |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110224488A (en) * | 2019-06-19 | 2019-09-10 | 广州炫通电气科技有限公司 | Electric quantity metering and equipment for monitoring power quality and system |
| CN111342865A (en) * | 2020-04-14 | 2020-06-26 | 深圳芯珑电子技术有限公司 | Power line carrier communication module production test system |
| CN113138316A (en) * | 2020-05-19 | 2021-07-20 | 吴沁莹 | User side electric energy data monitoring device and method |
-
2014
- 2014-11-28 CN CN201420726644.4U patent/CN204241591U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110224488A (en) * | 2019-06-19 | 2019-09-10 | 广州炫通电气科技有限公司 | Electric quantity metering and equipment for monitoring power quality and system |
| CN111342865A (en) * | 2020-04-14 | 2020-06-26 | 深圳芯珑电子技术有限公司 | Power line carrier communication module production test system |
| CN113138316A (en) * | 2020-05-19 | 2021-07-20 | 吴沁莹 | User side electric energy data monitoring device and method |
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