CN203759084U - Multi-communication mode electric power meter - Google Patents

Multi-communication mode electric power meter Download PDF

Info

Publication number
CN203759084U
CN203759084U CN201420136712.1U CN201420136712U CN203759084U CN 203759084 U CN203759084 U CN 203759084U CN 201420136712 U CN201420136712 U CN 201420136712U CN 203759084 U CN203759084 U CN 203759084U
Authority
CN
China
Prior art keywords
communication
arm processor
electric
chip
display
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420136712.1U
Other languages
Chinese (zh)
Inventor
陈孟元
钱田义
朱枫
邓家中
陶明
吕亚运
谢义建
郎朗
祝琳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Polytechnic University
Original Assignee
Anhui Polytechnic University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Polytechnic University filed Critical Anhui Polytechnic University
Priority to CN201420136712.1U priority Critical patent/CN203759084U/en
Application granted granted Critical
Publication of CN203759084U publication Critical patent/CN203759084U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a multi-communication mode electric power meter which comprises an ARM processor, an electricity acquiring and signal processing apparatus, a keyboard and switch inputting apparatus, a relay outputting apparatus, a display and a communication apparatus. The output end of the ARM processor is connected respectively with the input ends of the relay outputting apparatus and the display. The input end of the ARM processor is connected respectively with the electricity acquiring and signal processing apparatus and the keyboard and switch inputting apparatus. The ARM processor is in a two-way connection with the communication apparatus. The communication apparatus comprises a RS-485 wired communication device, a Zigbee wireless communication device and a 4-20mA transforming output apparatus. Capable of displaying clearly, the utility model can turn to a communication manner required by a specific spot. With multi-communication modes, a user can also control the setup of parameters through a keyboard. Having a high performance and favorable price, the utility model can directly substitute the functions of a normal power transformer, a measuring instrument and an electricity quality analyzing instrument.

Description

A kind of many communication modes electric instrument
Technical field
The utility model relates to instrument field, relates in particular to a kind of electric instrument of the many communication modes based on ARM.
Background technology
In Industry Control and testing process, voltage/current is one of most important parameter, needs to carry out the in-site measurement of voltage/current in a lot of situations.In electric system, can be fast and realize accurately more and more general to the instrument application of the measurement of the important electric parameters such as power, voltage, electric current, frequency, power factor, electric weight, so one stable, reliable, reading error electric measuring instrument little and intuitive display is very important.
In prior art, generally adopting electric instrument is all to adopt single communication modes, to rig-site utilization, makes troubles.At present the most important and most basic electricity consumption data of the management of power use still adopt the method for manually copying and accepting of original backwardness, and not only labour intensity is large, efficiency is low, but also can exist check meter not in place, estimate copy, leak copy, mistake is copied, miscount and the cycle of checking meter such as grows at the problem.In addition, the degree of accuracy that current many electric instruments are measured, degree of stability is not high yet, and the cost compare of high-precision electric instrument is expensive.
Utility model content
The technical problems to be solved in the utility model is, for the deficiencies in the prior art, to provide a kind of many communication modes electric instrument based on ARM.
In order to address the above problem, the technical scheme that the utility model provides is: a kind of many communication modes electric instrument, comprise: arm processor, electric quantity acquisition and signal processing apparatus, keyboard and switching value input device, relay output device, display and communication device, the output terminal of described arm processor is connected with the input end of relay output device, display and communication device respectively, controls each device work; The input end of arm processor is connected with switching value input device with keyboard with signal processing apparatus with electric quantity acquisition respectively, Gather and input signal; It between described arm processor and communication device, is two-way connection; Described communication device includes RS-485 wire communication device, Zigbee wireless communication apparatus and 4 ~ 20mA change and send output unit, thereby avoid communication modes single, realize communication modes variation, can select communication modes according to real current situation or demand, improve the practicality of electric instrument; Between RS-485 wire communication device and Zigbee wireless communication apparatus and arm processor, be two-way connection, 4 ~ 20mA becomes and send output unit to be connected with the output terminal of arm processor.Arm processor general I/O port connects combined floodgate, separating brake, adopts relay isolation.
Further improvement of the utility model is, described electric quantity acquisition and signal processing apparatus comprise voltage sampling circuit for gathering voltage signal, for gathering the current sampling circuit of current signal, for signal conditioning circuit that signal is nursed one's health with for the treatment of the three-phase electric energy special chip of signal, improve the data accuracy of the collection of signal, the error of valid data, improve the accuracy of data, and adopt the elegant and two Acquisition Circuit of electric current, the reliability and stability that energy effective guarantee gathers.
Further improvement of the utility model is, the three-phase electric energy special chip in described collection and signal processing apparatus adopts electric energy computation chip AT7022B to carry out signal processing, improves the processing speed of data and processes accuracy.
Further improvement of the utility model is, described arm processor employing LPC2138.
Further improvement of the utility model is, described display is light-emitting diode display, adopts digital pipe driving chip ZLG7289 driving LED to show.Digital demonstration power consumption is little, and reliability is strong, simple in structure, practical, improves the cost performance of whole instrument.
Further improvement of the utility model is, described Zigbee wireless communication apparatus adopts chip CCS2530, adopts MAX485 chip in RS-485 wire communication device, and 4 ~ 20mA becomes and send the change of output unit to send project into associated voltage or electric current.Thereby ensure the real-time and reliability of communication.
Further improvement of the utility model is, described keyboard and switching value input device 3 comprise button and the switching value of coming in and going out.Button can be used for setting and the turnover screen of parameter, and switching value mainly gathers circuit-breaker status.
Further improvement of the utility model is, described electric instrument also comprises shell, on described outer casing frontispiece, offer for placing the window of display, through hole for placing key-press, be used for the external PORT COM of communication device, be used for voltage sampling circuit and the external data acquisition port of current sampling circuit difference, for external by the control port of relay output device and for controlling the power switch of power supply, described arm processor, relay output device, signal conditioning circuit and three-phase electric energy special chip are positioned at shell, make electric instrument easy to use and carry, be conducive to inner member to be protected, on described shell, be also provided with handle.
Arm processor is further processed the electric signal of electric quantity acquisition and signal processing apparatus collection, and receive the instruction of keyboard and switching value input device, and show by display, by communication device, carry out wired or wireless transmission, and control combined floodgate or separating brake by relay output device, thus realize the work operation of whole electric instrument, simple in structure, intelligent high, workable.
Compared with prior art, the utility model beneficial effect is as follows: 1, intuitive display, can need to select telecommunication mode according to scene, communication modes comprises: output is sent in RS-485 wire communication, Zigbee wireless telecommunications and 4 ~ 20mA change, and user can also realize by keyboard the control of parameter.2, there is the high ratio of performance to price, can directly replace conventional electric power transmitter, measurement instrument and power quality analyzer table.As a kind of advanced person's intellectuality, digitized front-end collection element, be applied in various control system, SCADA system and energy management system.3, for the power monitoring demand of electric system, industrial and mining enterprises, intelligent building and design, it can measure all conventional parameters of electric power, possesses the frequency analysis function that special-purpose power quality analyzer that price is very expensive just has simultaneously.
The utility model is simple in structure, and cost is low, workable, can stablize, reliably, accurately record numerical value, the little and intuitive display of reading error, and can realize multiple means of communication, there is extremely strong practicality.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of electric instrument in embodiment of the utility model.
Fig. 2 is arm processor and communication module interface schema in embodiment of the utility model;
Fig. 3 is arm processor and switching value input, relay output and keyboard input interface figure in embodiment of the utility model.
Fig. 4 is arm processor and electric energy computation chip interface schema in embodiment of the utility model.
Fig. 5 is arm processor and charactron driving chip interface figure in embodiment of the utility model.
Fig. 6 is shell mechanism schematic diagram of the present utility model.
Wherein: 1-arm processor, 2-electric quantity acquisition and signal are processed, 3-keyboard and switching value input, 4-relay output device, 5-display, 6-communication device, 7-shell, 8-window, 9-through hole, 10-PORT COM, 11-data acquisition port, 12-control port, 13-power switch, 14-handle.
Embodiment
In order to deepen understanding of the present utility model, below in conjunction with embodiment, the invention will be further described, and this embodiment only, for explaining the present invention, does not form limiting the scope of the present invention.
As Figure 1-5, the present embodiment provides a kind of many communication modes electric instrument, comprise arm processor 1, electric quantity acquisition and signal processing apparatus 2, keyboard and switching value input device 3, relay output device 4, display 5 and communication device 6, the output terminal of described arm processor 1 is connected with the input end of display 5 with relay output device 4 respectively, controls modules work; The input end of arm processor 1 is connected with switching value input device 3 with keyboard with signal processing apparatus 2 with electric quantity acquisition respectively, Gather and input signal; It between described arm processor 1 and communication device 6, is two-way connection; Described communication device 6 includes RS-485 wire communication device, Zigbee wireless communication apparatus and 4 ~ 20mA change and send output unit.After arm processor 1 reads electric quantity acquisition and signal processing apparatus 2 and keyboard and switching value input device 3 input signals and it is further processed, and show by display 5, by communication device 6, carry out wired or wireless transmission, thereby control the work of other each devices.Described electric quantity acquisition and signal processing apparatus 2 comprise voltage sampling circuit, current sampling circuit, signal conditioning circuit and three-phase electric energy special chip.Gathering with signal processing apparatus 2 adopts three-phase electric energy special chip AT7022B to carry out signal processing.Described arm processor 1 adopts LPC2138.Described display 5 is light-emitting diode display, adopts digital pipe driving chip ZLG7289 driving LED to show.Described Zigbee wireless communication apparatus adopts chip CCS2530, adopts MAX485 chip in RS-485 wire communication device, and 4 ~ 20mA change send the change of output unit to send project into associated voltage or electric current.
As shown in Figure 2, arm processor 1 and communication device 6 interface schemas.Arm processor 1 has two asynchronous serial ports, is respectively used to RS-485 wired transmission device and Zigbee radio transmitting device, and arm processor 1 sends data to communication device 6, communication device 6 by data by the wired or wireless host computer that sends to.According to change, send project can select associated voltage or electric current to send the output into 4 ~ 20mA by its change, send host computer to.
As shown in Figure 3, arm processor and switching value input, relay output and keyboard input interface figure.Arm processor 1 general I/O port connects 4 buttons and 4 road input switch amounts, adopts two kinds of modes of hardware and software to eliminate shake, and four buttons are respectively used to setting and the turnover screen of parameter.Switching value mainly gathers circuit-breaker status.Arm processor 1 general I/O port connects combined floodgate, separating brake, adopts relay isolation.Background monitoring system can pass through RS-485 wire communication device and Zigbee wireless communication apparatus remote control combined floodgate or separating brake, thereby realizes many communication modes.
As shown in Figure 4, arm processor and electric energy computation chip AT7022B interface schema.The analog input channel of electric energy computation chip AT7022B, connects respectively a, b, c three-phase voltage and electric current, and A/D clock is external.CS is chip chip selection signal, and SEL is that phase three-wire three/three-phase and four-line is selected signal, and high level represents to select four-wire system.DOUT, DIN, SCLK form SPI communication data line, and between electric energy computation chip and arm processor, exchanges data is observed SPI agreement, and the signal of signal acquisition circuit collection sends arm processor 1 to after electric energy computation chip is processed.
As shown in Figure 5, arm processor and charactron drive chip interface figure.CS is chip chip selection signal, and DIN, SCLK form SPI communication data line, and between digital pipe driving chip and arm processor, exchanges data is observed SPI agreement, and arm processor is controlled and transmitted data to digital pipe driving chip, and charactron drives chip controls LED to show.
As shown in Figure 6, described electric instrument also comprises shell 7, on described shell 7 fronts, offer window 8 for placing display 5, for the through hole 9 of placing key-press, for by the external PORT COM 10 of communication device 6, for by voltage sampling circuit and current sampling circuit respectively external data acquisition port one 1, for external by the control port of relay output device 4 12, for control energising power switch 13; Described arm processor 1, relay output device 4, signal conditioning circuit and three-phase electric energy special chip are positioned at shell 7, are easy to carry and operate, and each components and parts are protected, and are also provided with handle 14 on described shell, are convenient to move.
Compared with prior art, the utility model beneficial effect is as follows: 1, intuitive display, can need to select telecommunication mode according to scene, communication modes comprises: output is sent in RS-485 wire communication, Zigbee wireless telecommunications and 4 ~ 20mA change, and user can also realize by keyboard the control of parameter.2, there is the high ratio of performance to price, can directly replace conventional electric power transmitter, measurement instrument and power quality analyzer table.As a kind of advanced person's intellectuality, digitized front-end collection element, be applied in various control system, SCADA system and energy management system.3, for the power monitoring demand of electric system, industrial and mining enterprises, intelligent building and design, it can measure all conventional parameters of electric power, possesses the frequency analysis function that special-purpose power quality analyzer that price is very expensive just has simultaneously.

Claims (8)

1. communication modes electric instrument more than a kind, it is characterized in that, comprise: arm processor (1), electric quantity acquisition and signal processing apparatus (2), keyboard and switching value input device (3), relay output device (4), display (5) and communication device (6), the output terminal of described arm processor (1) is connected with the input end of display (5) with relay output device (4) respectively, and the input end of arm processor (1) is connected with switching value input device (3) with keyboard with signal processing apparatus (2) with electric quantity acquisition respectively; It between described arm processor (1) and communication device (6), is two-way connection; Described communication device (6) includes RS-485 wire communication device, Zigbee wireless communication apparatus and 4 ~ 20mA change and send output unit.
2. a kind of many communication modes electric instrument according to claim 1, is characterized in that, described electric quantity acquisition and signal processing apparatus (2) comprise voltage sampling circuit, current sampling circuit, signal conditioning circuit and three-phase electric energy special chip.
3. a kind of many communication modes electric instrument according to claim 1 and 2, is characterized in that, the three-phase electric energy special chip in described collection and signal processing apparatus (2) adopts electric energy computation chip AT7022B to carry out signal processing.
4. a kind of many communication modes electric instrument according to claim 1, is characterized in that, described arm processor (1) adopts LPC2138.
5. a kind of many communication modes electric instrument according to claim 1, is characterized in that, described display (5) is light-emitting diode display, adopts digital pipe driving chip ZLG7289 driving LED to show.
6. a kind of many communication modes electric instrument according to claim 1, it is characterized in that, described Zigbee wireless communication apparatus adopts chip CCS2530, adopts MAX485 chip in RS-485 wire communication device, and 4 ~ 20mA change send the change of output unit to send project into associated voltage or electric current.
7. a kind of many communication modes electric instrument according to claim 1, is characterized in that, described keyboard and switching value input device (3) comprise button and the switching value of coming in and going out.
8. a kind of many communication modes electric instrument according to claim 1, it is characterized in that, described electric instrument also comprises shell (7), on described shell (7) front, offer the window (8) for placing display (5), through hole (9) for placing key-press, be used for the external PORT COM (10) of communication device (6), be used for voltage sampling circuit and the external data acquisition port (11) of current sampling circuit difference, for external by the control port of relay output device (4) (12), and power switch (13), described arm processor (1), relay output device (4), signal conditioning circuit and three-phase electric energy special chip are positioned at shell (7), on described shell, (7) are also provided with handle (14).
CN201420136712.1U 2014-03-25 2014-03-25 Multi-communication mode electric power meter Expired - Fee Related CN203759084U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420136712.1U CN203759084U (en) 2014-03-25 2014-03-25 Multi-communication mode electric power meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420136712.1U CN203759084U (en) 2014-03-25 2014-03-25 Multi-communication mode electric power meter

Publications (1)

Publication Number Publication Date
CN203759084U true CN203759084U (en) 2014-08-06

Family

ID=51254340

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420136712.1U Expired - Fee Related CN203759084U (en) 2014-03-25 2014-03-25 Multi-communication mode electric power meter

Country Status (1)

Country Link
CN (1) CN203759084U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109633410A (en) * 2018-12-21 2019-04-16 杭州彬腾科技有限公司 The automatic detecting tool of switching value module

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109633410A (en) * 2018-12-21 2019-04-16 杭州彬腾科技有限公司 The automatic detecting tool of switching value module

Similar Documents

Publication Publication Date Title
CN201750433U (en) Architectural energy consumption data acquisition device
CN202159269U (en) Multifunctional data acquisition controller
CN202372210U (en) General intelligent converting and conveying device used for industrial sensor
CN103049984B (en) Combustible gas alarm instrument based on Wireless HART communication technology
CN203759084U (en) Multi-communication mode electric power meter
CN102636192B (en) A kind of I/O type is able to programme arranges intelligent transducer
CN205121255U (en) Control system based on singlechip
CN201765279U (en) TFT-LCD display-based electric power quality analysis meter
CN203433041U (en) An electric energy meter provided with a communication function
CN204594593U (en) Multi-channel temperature measurement system
CN203732930U (en) An energy source data acquisition terminal with two RS485 interfaces
CN203786221U (en) Energy efficiency data acquisition terminal possessing two RS485 interfaces
CN202916335U (en) Three-phase current meter based on single-phase metering chip
CN202305780U (en) Intelligent resistance box for verification
CN205176576U (en) Multi -functional network environment monitoring system
CN203520621U (en) Centralized meter reading system based on composite communication manner
CN101109968A (en) Programmable controller for temperature and humidity
CN203350319U (en) Single-phase digital display meter
CN209103124U (en) A kind of digital display unit of collection in worksite signal
CN203732929U (en) Energy source data acquisition terminal
CN202929824U (en) Heat meter circuit module
CN203024888U (en) Temperature monitoring and transmitting device
CN203396833U (en) Four-path itinerant alternating-current ammeter
CN211207123U (en) Measurement and control device based on narrow-band Internet of things NBIOT technology
CN209821625U (en) Intelligence is examined table junction box

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140806

Termination date: 20150325

EXPY Termination of patent right or utility model