CN107968485A - A kind of adaptive microcomputer protecting controller of Multi-netmouth - Google Patents
A kind of adaptive microcomputer protecting controller of Multi-netmouth Download PDFInfo
- Publication number
- CN107968485A CN107968485A CN201711382485.5A CN201711382485A CN107968485A CN 107968485 A CN107968485 A CN 107968485A CN 201711382485 A CN201711382485 A CN 201711382485A CN 107968485 A CN107968485 A CN 107968485A
- Authority
- CN
- China
- Prior art keywords
- circuit
- network
- adaptive
- netmouth
- cpu
- 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.)
- Pending
Links
- 230000003044 adaptive effect Effects 0.000 title claims abstract description 26
- 238000004891 communication Methods 0.000 claims abstract description 26
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 238000005070 sampling Methods 0.000 claims description 9
- 238000004364 calculation method Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 238000004422 calculation algorithm Methods 0.000 claims description 3
- 230000005662 electromechanics Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- H02J13/0017—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00019—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using optical means
-
- H02J13/0062—
Abstract
The present invention discloses a kind of adaptive microcomputer protecting controller of Multi-netmouth; scheme includes CPU and connected protection using circuit, measurement sample circuit, outputting circuit for relay, 485 communicating circuits, button module, circuit of display driving, it is characterised in that：The CPU connects exchanger circuit by network communication circuit, and the exchanger circuit is equipped with multiple RJ45 interfaces.Beneficial effect：Network communication module uses stand-alone interface mode, can be carried out at the same time and not interfere with each other with RS485 communications, and when using network communication, RS485 can also be communicated at the same time, and network communication speed greatly improves；Network mouth quantity can be in the case where not changing pcb board, 1-4 any option and installment of network mouth.
Description
Technical field
The present invention relates to a kind of microcomputer protecting controller.
Background technology
Microcomputer protecting controller is for measuring, controlling, protecting, a kind of economical protection of communicating integral；For
Distribution network terminal high-tension distribution chamber of converting is made to measure, using the optional directional current protection of three-stage as core, is equipped with the monitoring of electrical network parameter
And acquisition function, traditional ammeter, voltmeter, power meter, frequency meter, dispatch list etc. can be saved, and can be incited somebody to action by communication port
Measurement data and protection information teletransmission host computer, conveniently realize distribution automation.
Traditional microcomputer protecting controller has the drawback that：1st, communication is usually the R485 communications used, when using net
When network communicates, it is that the serial ports used turns mixed-media network modules mixed-media, is bridged in RS485 communication lines.So that and using network when,
RS485 communication functions cannot use, it is impossible to while compatibility RS485 and network.And this method is because speed is subject to RS485 to communicate
The bottleneck limitation of speed.The actual speed of network can not embody；2nd, network interface is required more than 2 to network communication sometimes, feelings
Require microcomputer to have 3 even 4 network interfaces, and traditional most 2 network interfaces on the switchgear of condition complexity, can not extend more；3、
It is only applicable to 50HZ mains frequency environment；4th, on once figure is shown, the state of breaker is illustrate only, much switchs position
Configuration state（Handcart position, is grounded cutter position, isolation cutter position etc.）It cannot intuitively show, not enough understand.Even if there is shape
The microcomputer product of state display function, its pel part is also not perfect enough, and the figure of display does not simultaneously meet actual standard requirement.With
Family can not intuitively know the state of each position in current once figure；5th, electricity, which uploads, could be realized by communication part,
And host computer can only be uploaded to.The data of upload are digital quantities.In the case of some scenes need analog quantity, microcomputer can not
There is provided.User can only buy transmitter or the miscellaneous equipment with pick-up function again again；6th, data reading system and remote control division
Lock could be realized by communication part, and remote control or data reading system are realized even in an a small range, also will group
Building LAN could realize.When user checks Microcomputer Data, to go to leaf through on microcomputer manually.For the higher switch of installation site
Cabinet, user's operation are got up very inconvenient；7th, it is very few with human body induction function, and the existing product use with this function
It is that infrared hair is received to pipe die formula.Human body can not accurately be perceived.
The content of the invention
A kind of the defects of it is an object of the invention to overcome the prior art, there is provided adaptive digital relay and monitoring dress of Multi-netmouth
Put.
To achieve the above object, the solution of the present invention includes CPU and connected protection using circuit, measurement sampling
Circuit, outputting circuit for relay, 485 communicating circuits, button module, circuit of display driving, it is characterised in that：The CPU leads to
Network communication circuit connection exchanger circuit is crossed, the exchanger circuit is equipped with multiple RJ45 interfaces.
The adaptive microcomputer protecting controller of the Multi-netmouth, it is characterised in that：The network communication circuit includes the 1st
Network IC, the 2nd network IC, the 1 network IC are connected by the 1st network transformer with the 2nd network IC, and the 2nd network IC leads to
Cross the 2nd network transformer to be connected with the exchanger circuit, the 1st network IC is connected with the CPU.
The adaptive microcomputer protecting controller of the Multi-netmouth, it is characterised in that：Frequency measurement electricity is also associated with the CPU
Voltage input signal is converted to square-wave signal by road, the frequency measurement circuit, and inputs the frequency acquisition interface of CPU, the CPU tools
There is timer input capture pattern, captured by measuring, draw accurate mains frequency.
The adaptive microcomputer protecting controller of the Multi-netmouth, it is characterised in that：PWM/ is also associated with the CPU
DAC circuit, the PWM/DAC circuits connect analogue quantity output circuit, output voltage are adjusted by adjusting PWM duty cycle, real
Existing analog output.
The adaptive microcomputer protecting controller of the Multi-netmouth, it is characterised in that：Infrared receipts are also associated with the CPU
Power Generation Road, using infrared receiving/transmission circuit 38K infrared modulated demodulation modes, according between internal agreement, remote controler and meter-copy device
Infrared communication is carried out, realizes copy reading, the remote control divide-shut brake of data.
The adaptive microcomputer protecting controller of the Multi-netmouth, it is characterised in that：
Pyroelectric human body infrared sensor is also associated with the CPU, microcomputer is in screen protection state, the pyroelectric human body
When infrared sensor perceives human body, recover dispaly state automatically.
The adaptive microcomputer protecting controller of the Multi-netmouth, it is characterised in that：
The measurement sample circuit is measured using harmonic measure IC.
The adaptive microcomputer protecting controller of the Multi-netmouth, it is characterised in that：
Mains frequency adaptive algorithm is as follows：
After obtaining mains frequency by the frequency measurement circuit, then by software systems real-time tracking mains frequency, work as mains frequency
When being fluctuated in the range of 50HZ ± threshold values A, software systems call the calculation formula of 50HZ mains frequencies to carry out every computing, work as electricity
When net frequency fluctuates in the range of 60HZ ± threshold values B, software systems call the calculation formula of 60HZ mains frequencies to carry out every fortune
Calculate.Meanwhile software systems are realized with adjusting the sampling period according to the change of mains frequency, realize that frequency is adaptive, the condition of use
For：Δ F >=A, starts to adjust the sampling time, sampling interval duration：T=N/F.Wherein, N：Sampling number；T：Sampling interval duration；
F：Mains frequency；ΔF：Frequency change.The calculation formula of the 50HZ mains frequencies and the calculation formula of 60HZ mains frequencies
For known technology, this will not be repeated here.
The beneficial effect of the microcomputer protecting controller of the present invention：
1st, network communication module uses stand-alone interface mode, can be carried out at the same time and not interfere with each other with RS485 communications, use net
When network communicates, RS485 can also be communicated at the same time, and network communication speed greatly improves；
2nd, network mouth quantity can be in the case where not changing pcb board, 1-4 any option and installment of network mouth；
3rd, once figure intuitive display：By by a G- Design into can all on off states of Real time dynamic display；User can be straight
The state of all switches in current primary system figure is seen on the slave liquid crystal display seen；
4th, the analog quantity upload function of parameters of electric power can be achieved, user need to only select to need the electric parameter uploaded in actions menu,
It can realize that the analog quantity of corresponding electric parameter uploads, analog quantity can be voltage or electric current；
5th, increase PWM turns the analog output function of voltage, can be needed to export 0-5V or 4-20mA analog quantitys according to client,
Facilitate user's on-site transfer or driving miscellaneous equipment；
6th, using the IO simulation 38K infrared modulated demodulation of MCU, infrared copy reading data are realized, user name can be copied by meter-copy device
Device data is read, divide-shut brake can be remotely controlled by remote controler；
7th, using infrared human body heat releasing electric induction function, human body can accurately be sensed, in microcomputer screen protection state, if perceiving people
During body, recover dispaly state automatically, make user's operation more convenient；
8th, stability is good, and cost is low；The microcomputer of relatively traditional double network interfaces communication, the present invention is of low cost, and stability is good.
9th, harmonic measure cost is greatly reduced；
10th, in the case where hardware circuit and software version need not be changed, device-adaptive 50HZ and 60HZ power grid environment.
Brief description of the drawings
Fig. 1 is the circuit diagram of microcomputer protecting controller of the present invention；
Fig. 2 is the circuit diagram of inventive network communicating circuit；
Fig. 3 is the frequency acquisition interface diagram of CPU of the present invention.
Embodiment
The present invention is described in detail below in conjunction with the accompanying drawings.
As shown in Figs. 1-3, the adaptive microcomputer protecting controller of Multi-netmouth of the invention, including CPU1 and be connected thereto
Protection using circuit 2, measurement sample circuit 3, outputting circuit for relay 4,485 communicating circuits 5, button module 6, display drive
Dynamic circuit 7.The CPU1 connects exchanger circuit 9 by network communication circuit 8, and the exchanger circuit 9 is equipped with multiple
RJ45 interfaces 10.
The network communication circuit 8 includes the 1st network IC8a, the 2nd network IC8b, and the 1 network IC8a passes through the 1st network
Transformer 8c is connected with the 2nd network IC8b, and the 2nd network IC8b passes through the 2nd network transformer 8d and the exchanger circuit 9
Connection, the 1st network IC8a are connected with the CPU1.
Further, frequency measurement circuit 11 is also associated with the CPU1, the frequency measurement circuit 11 turns voltage input signal
Square-wave signal is changed to, and inputs the frequency acquisition interface 12 of CPU1, the CPU1 has timer input capture pattern, passes through survey
Amount capture, draws accurate mains frequency.
Mains frequency adaptive algorithm is as follows：
After obtaining mains frequency by the frequency measurement circuit 11, then by software systems real-time tracking mains frequency, when power grid frequency
When rate fluctuates in the range of 50HZ ± threshold values A, software systems call the calculation formula of 50HZ mains frequencies to carry out every computing, when
When mains frequency fluctuates in the range of 60HZ ± threshold values B, it is every that software systems call the calculation formula of 60HZ mains frequencies to carry out
Computing, meanwhile, software systems are realized with adjusting the sampling period according to the change of mains frequency, realize that frequency is adaptive.
Further, PWM/DAC circuits 13 are also associated with the CPU1, the PWM/DAC circuits 13 connect analog quantity
Output circuit 14, adjusts output voltage by adjusting PWM duty cycle, realizes analog output, can export 0-5V or 4-
20mA analog quantitys.
Further, infrared receiving/transmission circuit 17 is also associated with the CPU1, it is red using 38K using infrared receiving/transmission circuit 17
Investigation mission outside the city or town modulation demodulation system, according to infrared communication is carried out between internal agreement, remote controler and meter-copy device, realize data copy reading,
It is remotely controlled divide-shut brake.
Further, pyroelectric human body infrared sensor 15 is also associated with the CPU1, microcomputer is in screen protection state
When, when the pyroelectric human body infrared sensor 15 perceives human body, recover dispaly state automatically, make user's operation more convenient.
Further, the measurement sample circuit 3 is measured using harmonic measure IC16.With high certainty of measurement, and
The advantages of cost is low, eliminates the cost using high cost DSP.
It is upper described, limitation in any form is not done to the present invention, although the present invention is disclosed with preferable case study on implementation
As above, but the present invention is not limited to, any person skilled in the art, is not departing from technical solution of the present invention model
In enclosing, when structure and technology contents using the disclosure above make a little change or are modified to the equivalence enforcement of equivalent variations
Case, but every content without departing from technical solution of the present invention, the technical spirit according to the present invention is to above case study on implementation institute
Any simple modification, equivalent change and modification made, still belongs to technical solution of the present invention scope.
Claims (8)
1. a kind of adaptive microcomputer protecting controller of Multi-netmouth, including CPU (1) and connected protection use circuit
（2）, measurement sample circuit（3）, outputting circuit for relay（4）, 485 communicating circuits（5）, button module（6）, display driving electricity
Road（7）, it is characterised in that：The CPU (1) passes through network communication circuit（8）Connect exchanger circuit（9）, it is described to exchange electromechanics
Road（9）It is equipped with multiple RJ45 interfaces（10）.
2. the adaptive microcomputer protecting controller of Multi-netmouth according to claim 1, it is characterised in that：The network communication
Circuit（8）Including the 1st network IC（8a）, the 2nd network IC（8b）, the 1 network IC（8a）Pass through the 1st network transformer（8c）With
2nd network IC（8b）Connection, the 2nd network IC（8b）Pass through the 2nd network transformer（8d）With the exchanger circuit（9）Even
Connect, the 1st network IC（8a）It is connected with the CPU (1).
3. the adaptive microcomputer protecting controller of Multi-netmouth according to claim 1, it is characterised in that：On the CPU (1)
It is also associated with frequency measurement circuit（11）, the frequency measurement circuit（11）Voltage input signal is converted into square-wave signal, and inputs CPU
(1) frequency acquisition interface（12）, the CPU (1) has timer input capture pattern, by measuring capture, draws accurate
Mains frequency.
4. the adaptive microcomputer protecting controller of Multi-netmouth according to claim 1, it is characterised in that：On the CPU (1)
It is also associated with PWM/DAC circuits（13）, the PWM/DAC circuits（13）Connect analogue quantity output circuit（14）, by adjusting PWM
Duty cycle adjusts output voltage, realizes analog output.
5. the adaptive microcomputer protecting controller of Multi-netmouth according to claim 1, it is characterised in that：On the CPU (1)
It is also associated with infrared receiving/transmission circuit（17）, using infrared receiving/transmission circuit（17）Using 38K infrared modulated demodulation modes, according to inside
Infrared communication is carried out between agreement, remote controler and meter-copy device, realizes copy reading, the remote control divide-shut brake of data.
6. the adaptive microcomputer protecting controller of Multi-netmouth according to claim 1, it is characterised in that：
Pyroelectric human body infrared sensor is also associated with the CPU (1)（15）, microcomputer is in screen protection state, the heat
Release electric infrared sensor of the human body（15）When perceiving human body, recover dispaly state automatically.
7. the adaptive microcomputer protecting controller of Multi-netmouth according to claim 1, it is characterised in that：The measurement sampling
Circuit（3）Using harmonic measure IC（16）Measure.
8. the adaptive microcomputer protecting controller of Multi-netmouth according to claim 3, it is characterised in that：Mains frequency is adaptive
Answer algorithm as follows：
Pass through the frequency measurement circuit（11）After obtaining mains frequency, then by software systems real-time tracking mains frequency, work as power grid
When frequency fluctuates in the range of 50HZ ± threshold values A, software systems call the calculation formula of 50HZ mains frequencies to carry out every computing,
When mains frequency fluctuates in the range of 60HZ ± threshold values B, it is each that software systems call the calculation formula of 60HZ mains frequencies to carry out
Item computing, meanwhile, software systems are realized with adjusting the sampling period according to the change of mains frequency, realize that frequency is adaptive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711382485.5A CN107968485A (en) | 2017-12-20 | 2017-12-20 | A kind of adaptive microcomputer protecting controller of Multi-netmouth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711382485.5A CN107968485A (en) | 2017-12-20 | 2017-12-20 | A kind of adaptive microcomputer protecting controller of Multi-netmouth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107968485A true CN107968485A (en) | 2018-04-27 |
Family
ID=61995794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711382485.5A Pending CN107968485A (en) | 2017-12-20 | 2017-12-20 | A kind of adaptive microcomputer protecting controller of Multi-netmouth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107968485A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088389A (en) * | 2018-07-26 | 2018-12-25 | 广东电网有限责任公司佛山供电局 | The development and application of more power supply smart type microcomputer protecting devices |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7248977B2 (en) * | 1994-12-30 | 2007-07-24 | Power Measurement Ltd. | Phasor transducer apparatus and system for protection, control, and management of electricity distribution systems |
| CN101030711A (en) * | 2007-03-15 | 2007-09-05 | 中国船舶重工集团公司第七一二研究所 | Microcomputer protecting controller |
| CN103235177A (en) * | 2013-03-12 | 2013-08-07 | 中北大学 | Three-phase alternating current frequency sampling method realized by software algorithm |
| CN104468977A (en) * | 2014-11-07 | 2015-03-25 | 上海闻泰电子科技有限公司 | Screen automatic lighting method and mobile terminal |
| CN106208369A (en) * | 2016-07-21 | 2016-12-07 | 滁州学院 | A kind of on-line monitoring device of intelligent type low-voltage circuit breaker |
| CN205901445U (en) * | 2016-08-11 | 2017-01-18 | 深圳市惠立智能电力科技有限公司 | Centralized many platform system suitable for distribution network automation terminal |
-
2017
- 2017-12-20 CN CN201711382485.5A patent/CN107968485A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7248977B2 (en) * | 1994-12-30 | 2007-07-24 | Power Measurement Ltd. | Phasor transducer apparatus and system for protection, control, and management of electricity distribution systems |
| CN101030711A (en) * | 2007-03-15 | 2007-09-05 | 中国船舶重工集团公司第七一二研究所 | Microcomputer protecting controller |
| CN103235177A (en) * | 2013-03-12 | 2013-08-07 | 中北大学 | Three-phase alternating current frequency sampling method realized by software algorithm |
| CN104468977A (en) * | 2014-11-07 | 2015-03-25 | 上海闻泰电子科技有限公司 | Screen automatic lighting method and mobile terminal |
| CN106208369A (en) * | 2016-07-21 | 2016-12-07 | 滁州学院 | A kind of on-line monitoring device of intelligent type low-voltage circuit breaker |
| CN205901445U (en) * | 2016-08-11 | 2017-01-18 | 深圳市惠立智能电力科技有限公司 | Centralized many platform system suitable for distribution network automation terminal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088389A (en) * | 2018-07-26 | 2018-12-25 | 广东电网有限责任公司佛山供电局 | The development and application of more power supply smart type microcomputer protecting devices |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2699915B1 (en) | System of intelligent sensors in an electrical panelboard | |
| EP2699913B1 (en) | A system and method to calculate rms current and true power in a multidrop sensor network | |
| US9146259B2 (en) | Smart current transformers | |
| US9784773B2 (en) | Intelligent sensor network in a load center | |
| CN105607535A (en) | Intelligent power meter based on CAN communication and ZigBee networking | |
| CN107968485A (en) | A kind of adaptive microcomputer protecting controller of Multi-netmouth | |
| CN102636192B (en) | A kind of I/O type is able to programme arranges intelligent transducer | |
| CN103545916A (en) | Comprehensive measurement and control system device for switch cabinet | |
| CN204360158U (en) | A kind of intelligent PDU system | |
| CN203909519U (en) | Smart classroom controller | |
| CN201600409U (en) | Wind power measurement and control device | |
| CN108062066A (en) | A kind of intelligent monitor system for family | |
| CN103389431A (en) | Intelligent on-load comprehensive test device for transformer substation | |
| CN207541465U (en) | The intelligent treatment device for low-voltage distribution system based on IEC61850 | |
| CN106952463B (en) | State acquisition system and method for electric power secondary equipment | |
| CN210629522U (en) | Intelligent household system of power line carrier | |
| CN213274661U (en) | Novel electronic torque detection and control structure | |
| CN203414516U (en) | Drawer type direct current screen bus current sampling device | |
| CN203164789U (en) | Dry type transformer temperature controller | |
| CN201892648U (en) | Wireless-transmission intelligent on-line monitoring system for density and micro-water of SF6 (sulfur hexafluoride) | |
| CN206533348U (en) | A kind of pulse-width modulation type network control system | |
| CN207782481U (en) | A kind of power control cabinet intelligence control system | |
| CN206259754U (en) | A kind of distributing transformer monitoring device for intelligent distribution network | |
| CN205644111U (en) | A on -off controller for intelligent house | |
| CN205353198U (en) | Measurement electric energy meter device and direct current battery charging outfit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180427 |