CN206178088U - Insulator leakage current on -line monitoring device based on STM32 singlechip - Google Patents
Insulator leakage current on -line monitoring device based on STM32 singlechip Download PDFInfo
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- CN206178088U CN206178088U CN201621222541.XU CN201621222541U CN206178088U CN 206178088 U CN206178088 U CN 206178088U CN 201621222541 U CN201621222541 U CN 201621222541U CN 206178088 U CN206178088 U CN 206178088U
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- leakage current
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- microcontroller
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Abstract
The utility model provides an insulator leakage current on -line monitoring device based on STM32 singlechip, is including surveying module, CAN bus communication module, the microcontroller of each child node, STM32 control module. Survey the module including connecting gradually: the microcontroller of each child node is connected to magnetic balance type current sensor, signal amplifier, AD converter, AD converter, and the microcontroller of each child node passes through the CAN bus communication module and connects STM32 control module, and STM32 control module passes through the ethernet module and connects monitoring server. The utility model relates to an insulator leakage current on -line monitoring device based on STM32 singlechip adopts 32 MCU processing wares, can effectively improve the ability of system analysis processing data. Fast -speed CAN bus communication conception modulaire of while, but the real -time of implementation system and anti complicated electromagnetic field environment's interference killing feature.
Description
Technical field
The utility model is related to embedded development, field bus technique and High-Voltage Insulation field, particularly one kind and is based on
The insulator leakage current on-Line Monitor Device of STM32 single-chip microcomputers.
Background technology
With the constantly improve of electric power networks, insulator as power system vitals, its consumption in power network
It is considerable, but operation insulator out of doors can be polluted by dust in environment, and on surface pollution layer is formed.The pollution layer exists
After making moist in the case of the special weathers such as rain, mist, pollution flashover accident is easily produced.Particularly in high pressure UHV transmission, insulator
Pollution flashover accident has become one of main harm of power transmission network, because the pollution flashover accident cycle is long, typically can not pass through automatic
Reclosing technology is eliminated, so the safe operation to power system brings great hidden danger.Find through research, insulator exists
Leakage current when there is pollution flashover accident will be dramatically increased, therefore, we can be by the method for monitoring leakage electric current come effectively
The harm that brings of Prevent from Dirt Flash Frequent Accidents, reach the purpose for ensureing safe operation of power system.
At present, according to the difference of metering system, mainly there are detection resistance plus amplifier and Current Mutual Inductance method on the market, it is conventional
Detection resistance adds the shortcomings of amplifier and Current Mutual Inductance method have reliability and security is poor, and certainty of measurement is inadequate, networking is difficult.
The content of the invention
The drawbacks of in order to solve existing traditional measurement, the utility model provides a kind of insulator based on STM32 single-chip microcomputers
On-line Monitoring of Leakage Current device, it passes through magnet ring gas according to hall principle, the magnetic energy that insulator surface leakage current is produced
Hall element between gap is converted into electric signal.The current information for collecting is become into voltage by translated resistance carries out programming amplifying
Afterwards, A/D conversions are carried out by STC89C52 microprocessors, the result of conversion will be sent to upper STM32 single-chip microcomputers by CAN
Analyse and compare.When current value reaches the threshold value of setting, control module will control the power supply of each child node relay line disconnection,
And fault message is sent to into terminal server.So as to be effectively prevented the generation of pollution flashover failure, it is ensured that power system
Safe and efficient operation.
The technical scheme that the utility model is taken is；
A kind of insulator leakage current on-Line Monitor Device based on STM32 single-chip microcomputers, including detecting module, CAN
Communication module, the microcontroller of each child node, STM32 control modules.The detecting module includes what is be sequentially connected：Magnetic balance type
Current sensor, signal amplifier, A/D converter, A/D converter connects the microcontroller of each child node, each child node it is micro-
Controller connects STM32 control modules by CAN communication module, and STM32 control modules are supervised by ethernet module connection
Survey server.
The magnetic energy that the magnetic balancing current sensor is used to produce insulator surface leakage current passes through magnet ring air gap
Between Hall element be converted into electric signal；Signal amplifier is used to carry out electric signal after programming amplifying, to be transferred to A/D converter
Carry out A/D conversions；The microcontroller of each child node is used for the digital quantity to being formed and processes.
The CAN communication module adopts bus type topological structure, including paired shield cable, the CAN of 120 Ω
Controller, CAN transceiver；Paired shield cable is used for building for physical circuit；CAN controller, CAN transmitting-receiving
Device is used for and the microcontroller of each child node coordinates, complete the sending and receiving of such as message, message filtering, send scanning and in
The serial communication tasks such as disconnected scanning.
The STM32 control modules connection Keysheet module, display module, the Keysheet module, display module are used for realizing
Man-machine interaction, the secure threshold of setting insulator leakage current.
The STM32 control modules connect ethernet module, and the leakage current of each insulator collected is uploaded to
Monitoring server carries out remote management.
The magnetic balancing current sensor includes Hall element, is changed into the current signal of alternation by Hall element
Standard voltage signal.
The microcontroller connection relay of each child node, STM32 control modules are by the leakage current values of each child node
Compared with threshold value, the microcontroller that control instruction issues each child node is formed, the microcontroller of each child node refers to according to control
Make the action of control relay, control circuit break-make.
A kind of insulator leakage current on-Line Monitor Device based on STM32 single-chip microcomputers of the utility model, using 32 lists
Piece machine processor, can effectively improve the ability that network analysis processes data.While the CAN Communication Module Design of high speed, can
Realize the real-time of system and the antijamming capability of anti-complex electromagnetic fields environment.The threshold value setting of leakage current is flexible, can be with root
It is adjusted according to the change of insulator local environment, weather, the wrong report of anti-locking system, the generation of malfunction.System by each
The information package of shaft tower insulator leakage current is sent to terminal server, convenient inquiry.
Description of the drawings
Fig. 1 is the schematic diagram of the function of the utility model device.
Fig. 2 is the microprocessor control block diagram of each child node of the utility model device.
Fig. 3 is the circuit theory diagrams of the utility model device.
Fig. 4 is the bottom layer node circuit theory diagrams of the utility model device.
Specific embodiment
A kind of insulator leakage current on-Line Monitor Device based on STM32 single-chip microcomputers, including detecting module, CAN
Communication module, the microcontroller of each child node, STM32 control modules.
The detecting module includes what is be sequentially connected：Magnetic balancing current sensor, signal amplifier, A/D converter.A/
D converters connect the microcontroller of each child node, and the microcontroller of each child node connects STM32 by CAN communication module
Control module, STM32 control modules are by ethernet module connection monitoring server.
The magnetic energy that the magnetic balancing current sensor is used to produce insulator surface leakage current passes through magnet ring air gap
Between Hall element be converted into electric signal.Signal amplifier is used to carry out electric signal after programming amplifying, to be transferred to A/D converter
Carry out A/D conversions.The microcontroller of each child node is used for the digital quantity to being formed and processes.
The CAN communication module adopts bus type topological structure, including paired shield cable, the CAN of 120 Ω
Controller SJA1000, CAN transceiver 82C50.Paired shield cable is used for building for physical circuit.CAN is controlled
Device, CAN transceiver are used for and the microcontroller of each child node coordinates, and complete the sending and receiving of such as message, message filter
The serial communication tasks such as ripple, transmission scanning and interrupt scanning.
The STM32 control modules connection Keysheet module, display module, the Keysheet module, display module are used for realizing
Man-machine interaction, the secure threshold of setting insulator leakage current.
The STM32 control modules connect ethernet module, and the leakage current of each insulator collected is uploaded to
Monitoring server carries out remote management.
The magnetic balancing current sensor includes Hall element, is changed into the current signal of alternation by Hall element
Standard voltage signal.
STM32 control modules first by the leakage current information package of the insulator of each child node collection, and by with
Too net module is uploaded to monitoring server.Then, STM32 control modules compare the leakage current values of each node with threshold value,
Form the microcontroller that control instruction issues each child node.The microcontroller of each child node is then according to control instruction control relay
Action, reach the purpose of control circuit break-make.
First, detecting module：
1.1 magnetic balancing current sensor：The former time-dependent current of KXB_21 series Hall current sensors is produced in wire periphery
Raw magnetic field is assembled by magnetism gathering rings, and output is measured and amplified by the Hall original paper in magnet ring air gap.
1.2 signal amplifier：It is electric due under the numerical value very little, but failure condition under normal circumstances of insulator leakage current
Stream is sharply increased.Therefore, detecting module not only needs to carry out input/output terminal isolation, and anti-stop signal is interfered.And need
Multiplication factor is controlled by software.In Fig. 3 using AD521 as Amplification and insulation chip, the chip have Differential Input port,
Higher common mode inhibition and accurate programmable-gain input/output module, meet the requirement of system.
1.3rd, A/D converter：A/D converter mainly with chip be ADC0809.ADC0809 is 8 successive approximations
A/D conversion chips.It is one of more extensive A/D conversion chips of current application.With cheap, conversion speed soon with it is miniature
The simple series of advantages of processor interface.It is widely used in 8 bit single-chip systems.It is connected such as with the hardware of STC89C52
Shown in Fig. 3.
1.4th, microcontroller：In Fig. 3, the P2.3 pins of STC89C52 and the P2.4 pins control passage of difference 4 are digital control
Analog switch CD4052 reaches the purpose that programming amplifying prevents signal saturation being accurately controlled the multiplication factor of AD521.
2nd, CAN communication module：
2.1st, the physical circuit of CAN：Adopt characteristic impedance for 120 Ω paired shield cable, can effectively press down
System interference.
2.2nd, the interface of bottom layer node and CAN mainly by SJA1000 CAN controllers chip and
82C50 CANs transponder chip is engaged to complete with STC82C52 single-chip microcomputers；STM32 control modules are then by it
The CAN controller put realize communicate foundation.Its particular hardware connected mode is as shown in Figure 4.
3rd, STM32 control modules：Microprocessor portion adopts STM32F103ZET6 chips, and the chip is based on ARM
32 8-digit microcontrollers of Cortex-M3 cores.The apparatus system clock frequency has reached 72MHz, is that performance is most in like product
Height, cost is relatively low, the chip of super low-power consumption.The chip is mainly responsible in systems the remittance of CAN bottom layer node current information
Summation is analyzed, and by the way that the information collected must be compared with setting value, different control instructions is sent to bottom layer node, so as to reality
The purpose of existing control circuit break-make and guarantee safe operation of power system, in addition the chip is also by the information of insulator leakage current
Packing is sent to terminal server by ethernet module, so as to realize the purpose of remote real time monitoring.
Keysheet module and LED display module, mainly facilitate the setting of current threshold, there is provided the mode of man-machine interaction.
Claims (7)
1. a kind of insulator leakage current on-Line Monitor Device based on STM32 single-chip microcomputers, including detecting module, CAN be logical
Letter module, the microcontroller of each child node, STM32 control modules, it is characterised in that：The detecting module includes being sequentially connected
's：Magnetic balancing current sensor, signal amplifier, A/D converter, A/D converter connects the microcontroller of each child node, respectively
The microcontroller of child node connects STM32 control modules by CAN communication module, and STM32 control modules pass through Ethernet
Module connection monitoring server.
2. a kind of insulator leakage current on-Line Monitor Device based on STM32 single-chip microcomputers according to claim 1, its feature
It is：The magnetic balancing current sensor is used for the magnetic energy for producing insulator surface leakage current by between magnet ring air gap
Hall element is converted into electric signal；Signal amplifier is used to electric signal is carried out after programming amplifying, and being transferred to A/D converter is carried out
A/D is changed；The microcontroller of each child node is used for the digital quantity to being formed and processes.
3. a kind of insulator leakage current on-Line Monitor Device based on STM32 single-chip microcomputers according to claim 1, its feature
It is：The CAN communication module adopts bus type topological structure, including paired shield cable, CAN controller, CAN
Bus transceiver；Paired shield cable is used for building for physical circuit；CAN controller, CAN transceiver are used for and each
The microcontroller of child node coordinates, and completes the sending and receiving of message, message filtering, sends scanning and interrupt scanning serial communication
Task.
4. a kind of insulator leakage current on-Line Monitor Device based on STM32 single-chip microcomputers according to claim 1, its feature
It is：The STM32 control modules connection Keysheet module, display module, the Keysheet module, display module are man-machine for realizing
Interaction, the secure threshold of setting insulator leakage current.
5. a kind of insulator leakage current on-Line Monitor Device based on STM32 single-chip microcomputers according to claim 1, its feature
It is：The STM32 control modules connect ethernet module, and the leakage current of each insulator collected is uploaded to into monitoring
Server carries out remote management.
6. a kind of insulator leakage current on-Line Monitor Device based on STM32 single-chip microcomputers according to claim 1, its feature
It is：The magnetic balancing current sensor includes Hall element, and the current signal of alternation is changed into into mark by Hall element
Quasi- voltage signal.
7. a kind of insulator leakage current on-Line Monitor Device based on STM32 single-chip microcomputers according to claim 1, its feature
It is：The microcontroller connection relay of each child node, STM32 control modules are by the leakage current values of each child node and threshold value phase
Relatively, form the microcontroller that control instruction issues each child node, the microcontroller of each child node according to control instruction control after
The action of electrical equipment, control circuit break-make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621222541.XU CN206178088U (en) | 2016-11-14 | 2016-11-14 | Insulator leakage current on -line monitoring device based on STM32 singlechip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621222541.XU CN206178088U (en) | 2016-11-14 | 2016-11-14 | Insulator leakage current on -line monitoring device based on STM32 singlechip |
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| CN206178088U true CN206178088U (en) | 2017-05-17 |
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| CN201621222541.XU Expired - Fee Related CN206178088U (en) | 2016-11-14 | 2016-11-14 | Insulator leakage current on -line monitoring device based on STM32 singlechip |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748319A (en) * | 2017-11-08 | 2018-03-02 | 国家深海基地管理中心 | The insulation detection device and manned underwater vehicle of manned underwater vehicle |
| CN110132500A (en) * | 2019-04-23 | 2019-08-16 | 上海海事大学 | One kind being based on can bus floor heating pipeline leak point positioning device and method |
| CN111537608A (en) * | 2020-05-08 | 2020-08-14 | 中国航空制造技术研究院 | Ultrasonic detection device |
-
2016
- 2016-11-14 CN CN201621222541.XU patent/CN206178088U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748319A (en) * | 2017-11-08 | 2018-03-02 | 国家深海基地管理中心 | The insulation detection device and manned underwater vehicle of manned underwater vehicle |
| CN110132500A (en) * | 2019-04-23 | 2019-08-16 | 上海海事大学 | One kind being based on can bus floor heating pipeline leak point positioning device and method |
| CN111537608A (en) * | 2020-05-08 | 2020-08-14 | 中国航空制造技术研究院 | Ultrasonic detection device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170517 Termination date: 20171114 |