CN204103604U - Based on the power monitoring main frame of MODBUS - Google Patents
Based on the power monitoring main frame of MODBUS Download PDFInfo
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- CN204103604U CN204103604U CN201420607969.0U CN201420607969U CN204103604U CN 204103604 U CN204103604 U CN 204103604U CN 201420607969 U CN201420607969 U CN 201420607969U CN 204103604 U CN204103604 U CN 204103604U
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- modbus
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Abstract
Based on a power monitoring main frame of MODBUS, comprising: liquid crystal and LED display, input unit, microprocessor, memory and RS-485 transmission circuit; 485 communication change-over panels in slave computer instrument are connected by 485 buses with RS-485 transmission circuit.The utility model provides omnibearing measurement function, electrical quantity as basic in voltage, electric current, active power, reactive power, power factor, frequency, active electrical degree, idle electric degree etc.Also there is very strong expanded function, as shaken letter input, programmable relay output and two-way RS485/MODBUS communication, networking management can be carried out to instrument.User can export relay easily and programme, and realizes automatically controlling.
Description
Technical field
The utility model relates to the technical field of power monitoring, is a kind of power monitoring main frame based on MODBUS specifically.
Background technology
Along with the development of modern science and technology, in industry spot, there is various industrial instrument.The generation of industrial instrument and application, not only increase the production efficiency of factory, more affects the process of industrialization of whole country, say to a certain extent, and the development of industrial instrument reflects the development degree of modern industry from the side.
Power industry is a most important branch in basic energy resource industry, and it is not only closely bound up with daily life, and with the social stability of country and economic security closely related, in the national economic development, occupy very important status.Along with the sharply increase of various household electrical appliance and various industrial electricity apparatus, the overall size of electrical network is also increasing, and the power unit in electrical network and power structure become increasingly complex, also more and more higher to the management expectancy of whole electrical network.Along with the development of power electronics industry, no matter be national grid administrative department or Electricity customers, all propose more strict requirement to the supervisory control system of electric power networks, this just needs electric instrument to bear more importantly task.Such as, for guiding client's reasonable arrangement electricity consumption time, avoiding peak times of power consumption, reducing the peakload of whole electrical network, making electric energy obtain more balanced, more effective utilization, needing to carry out time sharing segment metering to the power consumption of user; In order to monitor in real time the power information of certain power consumption equipment or power unit, remote operation, need electric instrument to have the function of telecommunication; And for example, wish that electric instrument system has electricity charge Automatic-settlement and remote meter-reading function, to save human cost, and the insecurity etc. of manual metering under avoiding high-pressure system.Meanwhile, along with the development of economic society, electricity transaction is more and more frequent, and trading volume is also increasing, and supply and demand both sides wish that the interests of self ensure to some extent, and therefore, the transmitting of electric instrument data seems extremely important.
Common electric instrument structure is simple, function singleness, wants to expand its function and to improve its accuracy impossible.On the other hand, singlechip technology, bussing technique and network technology are day by day ripe, for the development of multifunction instrument and supervisory control system thereof provides advantage.
What the measurement of alternating current generally adopted the earliest is induction type machinery instrument, and it mainly carrys out measuring electric quantity data by theory of mechanics.Due to the restriction of self theory and structure, induction type machinery instrument is slow in reacting, and precision is low, poor stability, and along with the development of industrial technology, this instrument far can not meet the demand of people, and therefore simulation electronic instrument is arisen at the historic moment.
Simulation electronic instrument drives indicators turn to indicate electric quantity data by basic analog circuit, simulation electronic instrument is all belonged to as tested indoor old-fashioned voltmeter, Pressure gauge, ammeter, wattmeter etc., this kind of instrument has had significant improvement relative to mechanical type instrument, but still there are problems, as recalibration, null offset, reading difficulty, circuit aging large etc. on accuracy impact.
The generation of digital instrument solves above problem to a great extent, and the analog signal of input is mainly converted to digital signal by A/D sample circuit by it, and digital signal is shown with the form of numerical value.Digital and electronic instrument response speed, precision is higher, and digital independent is clear and intuitive, eliminates the error that artificial reading brings.
Current, domestic intelligent instrument is in the fast development stage, but instrumentation comprehensive management monitoring system is also in research and development and simple application stage, and a lot of middle and small scale application scenario only has instrument, does not have integrated management supervisory control system.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of power monitoring main frame based on MODBUS.
The technical scheme that the utility model is taked for the technical problem existed in solution known technology is:
Power monitoring main frame based on MODBUS of the present utility model, comprise in monitoring host computer and comprise again liquid crystal and LED display, input unit, microprocessor, memory and RS-485 transmission circuit, wherein microprocessor shows with LED with liquid crystal, input unit, memory, RS-485 transmission circuit be connected respectively.
The utility model can also adopt following technical measures:
In described monitoring host computer, the chip model of microprocessor is PIC24 framework.
The thermal printer be connected with microprocessor and voice output is also provided with in described monitoring host computer.
Described voice output comprises WT588D-20SS speech chip, 25Pxx memory and loud speaker.
The advantage that the utility model has and good effect are:
Of the present utility model based in the power monitoring main frame of MODBUS, slave computer instrument to collect to electric quantity data send monitoring host computer to by RS-485 bus, monitoring host computer carries out unified management to data and performs last output function.The comprehensive monitoring management equipment that the utility model is collection monitoring alarm, fault cues, time-shared charge, remote meter reading, the electricity charge print to one, makes the man-machine interaction in power monitoring convenient, also humanized.The utility model provides omnibearing measurement function, electrical quantity as basic in voltage, electric current, active power, reactive power, power factor, frequency, active electrical degree, idle electric degree etc.Also there is very strong expanded function, as shaken letter input, programmable relay output and two-way RS485/MODBUS communication, networking management can be carried out to instrument.User can export relay easily and programme, and realizes automatically controlling.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the power monitoring main frame based on MODBUS of the present utility model.
Embodiment
Referring to drawings and Examples, the utility model is described in detail.
As shown in Figure 1, power monitoring main frame based on MODBUS of the present utility model, comprise in monitoring host computer and comprise again liquid crystal and LED display, input unit, microprocessor, memory and RS-485 transmission circuit, wherein microprocessor shows with LED with liquid crystal, input unit, memory, RS-485 transmission circuit be connected respectively.
The mainboard of monitoring host computer for microprocessor, is with the various functional circuits such as communication, storage with PIC24 single-chip microcomputer outward.Mainboard exists two kinds of Power supplies, 5V and 3.3V, PIC24 single-chip microcomputer is that 3.3V powers, and all the other are as ferroelectric memory, I
2c memory, clock chip etc. are all that 5V powers, therefore mainboard adds Power convert, what adopt in the utility model is that three terminal regulator AS1117-3.3 carries out voltage transitions, the output voltage precision of AS1117-3.3 is high, error can reach 1%, voltage linear degree is 0.2%, maximum input current is 1A, the design's mainboard introduces 5V power supply, be directly the power supply such as memory, clock chip, it is that single-chip microcomputer is powered that three terminal regulator exports 3.3V, in addition, communication module and voice module are two independently platelets, are plugged on mainboard.Wherein communication module and RS-485 communication module.Interface section, mainboard mainly contains power supply input and detects interface, display and input unit control interface and printer interface.
Display panel in foreground application, provides input and output as human-computer interaction interface.Importation, the design has 25 buttons, composition 5*5 matrix keyboard; Output comprises liquid crystal display screen and LED display, and the design adopts 320*240LCM lattice lcd to shield, and this liquid crystal display screen not only can show Chinese and English character, can also Show Picture, and has good output effect; LED part, the design has shared 10 LED lamps, and wherein 4 green are used to refer to normal condition, and 5 yellow is used to refer to fault, and 1 red is used to refer to warning.10 LED lamps wherein two directly control with single-chip processor i/o mouth, all the other 8 by 74HC164 serioparallel exchange chip drives.
Power panel, based on analog circuit, mainly comprises active and standby electric automatic switching circuit, battery charger, current foldback circuit etc., also has main electro-detection and standby power detection circuit in addition.
The thermal printer be connected with microprocessor and voice output is also provided with in monitoring host computer.
Voice output comprises WT588D-20SS speech chip, 25Pxx memory and loud speaker.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model with preferred embodiment openly as above, but, and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, certainly the technology contents of announcement can be utilized to make a little change or modification, become the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solutions of the utility model, according to any simple modification that technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.
Claims (4)
1. the power monitoring main frame based on MODBUS, it is characterized in that, comprise in monitoring host computer and comprise again liquid crystal and LED display, input unit, microprocessor, memory and RS-485 transmission circuit, wherein microprocessor shows with LED with liquid crystal, input unit, memory, RS-485 transmission circuit be connected respectively.
2. the power monitoring main frame based on MODBUS according to claim 1, is characterized in that: in monitoring host computer, the chip model of microprocessor is PIC24 framework.
3. the power monitoring main frame based on MODBUS according to claim 2, is characterized in that: be also provided with the thermal printer be connected with microprocessor and voice output in monitoring host computer.
4. the power monitoring main frame based on MODBUS according to claim 3, is characterized in that: voice output comprises WT588D-20SS speech chip, 25Pxx memory and loud speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420607969.0U CN204103604U (en) | 2014-10-21 | 2014-10-21 | Based on the power monitoring main frame of MODBUS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420607969.0U CN204103604U (en) | 2014-10-21 | 2014-10-21 | Based on the power monitoring main frame of MODBUS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204103604U true CN204103604U (en) | 2015-01-14 |
Family
ID=52272005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420607969.0U Expired - Fee Related CN204103604U (en) | 2014-10-21 | 2014-10-21 | Based on the power monitoring main frame of MODBUS |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204103604U (en) |
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2014
- 2014-10-21 CN CN201420607969.0U patent/CN204103604U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150114 Termination date: 20151021 |
|
| EXPY | Termination of patent right or utility model |