CN106291359A - A kind of generator carbon brush electric current and carbon brush temperature online monitoring system and method - Google Patents
A kind of generator carbon brush electric current and carbon brush temperature online monitoring system and method Download PDFInfo
- Publication number
- CN106291359A CN106291359A CN201610703116.0A CN201610703116A CN106291359A CN 106291359 A CN106291359 A CN 106291359A CN 201610703116 A CN201610703116 A CN 201610703116A CN 106291359 A CN106291359 A CN 106291359A
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- Prior art keywords
- carbon brush
- electric current
- temperature
- generator
- sensor
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
Abstract
A kind of generator carbon brush electric current and carbon brush temperature online monitoring system and method, belong to safety monitoring technology field；Including sensor assembly, Signal-regulated kinase, data processing module, wireless transmitter module, power supply and display monitoring means；Sensor assembly detection generator carbon brush electric current and carbon brush temperature, output voltage signal；The amplitude of voltage signal is compressed and denoising by Signal-regulated kinase；Voltage signal is converted to generator carbon brush electric current and carbon brush temperature by data processing module, and is sent to show that monitoring means shows in real time and monitors by wireless transmitter module；Sensor is installed to generator carbon brush brush holder by the present invention, does not affect the properly functioning of unit, it is simple to sensor cluster is changed；The electric current of generator carbon brush and temperature data can show in real time, it is not necessary to hand inspection, it is simple to take measures in time to get rid of generator carbon brush fault；Carbon brush electric current and carbon brush temperature data use and are wirelessly transferred, it is to avoid on-the-spot lengthy and jumbled wiring, it is simple to install.
Description
Technical field
The invention belongs to safety monitoring technology field, be specifically related to a kind of generator carbon brush electric current and carbon brush temperature online prison
Examining system and method.
Background technology
Large-scale generating set is in During Process of Long-term Operation, and excitation carbon brush electric current there will be energy imbalance, causes indivedual
Carbon brush generates heat, and owing to carbon brush material graphite has negative temperature characteristic, if processed not in time, heat condition can be increasingly severe,
Carbon brush is caused to burn even initiation ring fire accident.The monitoring of carbon brush is generally taked what human at periodic intervals patrolled and examined to do by generation current industry
Method, not only wastes a large amount of manpower and materials, inefficiency, and can not pinpoint the problems in time, brings hidden danger for safety in production.
Summary of the invention
The deficiency existed for above-mentioned prior art, the present invention provides a kind of generator carbon brush electric current and carbon brush temperature online
Monitoring system and method.
Technical scheme:
A kind of generator carbon brush electric current and carbon brush temperature online monitoring system, including:
On-site detecting device and display monitoring means；
Described on-site detecting device includes: sensor assembly, Signal-regulated kinase, data processing module, wireless transmit mould
Block and power supply；Described sensor assembly includes the Hall current sensor for detecting generator carbon brush electric current and sends out for detection
The temperature sensor of carbon brush for electric machine temperature；
Described Hall current sensor and temperature sensor are arranged on electromotor, and generator carbon brush passes through wire and bolt
Connecting, Hall current sensor through Hall current sensor intermediate throughholes and is fixed on generator carbon brush frame by bolt.Temperature
Degree sensor is arranged near carbon brush.Hall current sensor and temperature sensor outfan defeated with Signal-regulated kinase respectively
Enter end to connect；The outfan of Signal-regulated kinase is connected with data processing module input；Data processing module outfan and nothing
Line transmitter module input connects；Power supply and sensor assembly, Signal-regulated kinase, data processing module and wireless transmitter module
Connect；Wireless transmitter module uses wireless connections with display monitoring means.
Described Signal-regulated kinase includes operational amplifier and low pass filter, opamp input terminal respectively with Hall
Current sensor is connected with temperature sensor outfan；Low pass filter input is connected with operational amplifier output terminal, low pass
Filter output is connected with data processing module input.
Generator carbon brush electric current and the generator carbon brush electric current of carbon brush temperature online monitoring system and carbon brush temperature is used to exist
Line monitoring method, it is characterised in that comprise the steps:
Step 1: power supply is that on-site detecting device is powered；
Step 2: Hall current sensor detection passes through the generator carbon brush electric current of a through hole, and by generator carbon brush
Electric current exports with voltage signal；
Step 3: temperature sensor detection generator carbon brush temperature, and generator carbon brush temperature is exported with voltage signal；
Step 4: Signal-regulated kinase obtains Hall current sensor and the voltage of temperature sensor output, and is believed by voltage
Number amplitude be compressed；
Step 5: to the filtered voltage signal noise after amplitude compression, is sent to the voltage signal of denoising data and processes
Module；
Step 6: the voltage signal of denoising is converted to generator carbon brush electric current and carbon brush temperature by data processing module, and
It is sent to wireless launcher；
Step 7: the generator carbon brush electric current received and carbon brush temperature are used the side of wireless transmit by wireless transmitter module
Formula is sent to show monitoring means；
Step 8: the carbon brush electricity that display monitoring means sends for receiving the on-site detecting device being positioned on different electromotor
Stream and carbon brush temperature, show in real time carbon brush electric current and carbon brush temperature and monitor.
Beneficial effect: the generator carbon brush electric current of the present invention and carbon brush temperature online monitoring system and method and prior art
Compare, have the advantage that
(1) directly Hall current sensor is installed to generator carbon brush brush holder, does not affect the properly functioning of unit, and
It is easy to sensor cluster change；
(2) electric current and the temperature data of generator carbon brush can show in real time, it is not necessary to hand inspection, it is simple to take measures in time
Get rid of generator carbon brush fault；
(3) carbon brush electric current and carbon brush temperature data use and are wirelessly transferred, it is to avoid on-the-spot lengthy and jumbled wiring, it is simple to install,
Decrease the generation of fault.
Accompanying drawing explanation
Fig. 1 is a kind of generator carbon brush electric current and the carbon brush temperature online monitoring system structure of one embodiment of the present invention
Schematic diagram；
Fig. 2 is the Hall current sensor electrical schematic diagram of one embodiment of the present invention；
Fig. 3 is the operational amplifier-low pass filter electrical schematic diagram of one embodiment of the present invention, wherein, 1-computing
Amplifier, 2-low pass filter；
Fig. 4 is the digital signal processor electrical schematic diagram of one embodiment of the present invention；
Fig. 5 is the wireless transmitter module electrical schematic diagram of one embodiment of the present invention；
Fig. 6 is the voltage source electrical schematic diagram of one embodiment of the present invention；
Fig. 7 is the current source electrical schematic diagram of one embodiment of the present invention；
Fig. 8 is the DC converter electrical schematic diagram of one embodiment of the present invention；
Fig. 9 is the SP3232EEN chip electrical schematic diagram of one embodiment of the present invention；
Figure 10 is the circuit connection schematic diagram of the on-site detecting device of one embodiment of the present invention；
The generator carbon brush electric current of Figure 11 one embodiment of the present invention and carbon brush on-line temperature monitoring method flow diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings one embodiment of the present invention is elaborated.
As it is shown in figure 1, a kind of generator carbon brush electric current of present embodiment and carbon brush temperature online monitoring system, including:
On-site detecting device and display monitoring means；
Described on-site detecting device includes: sensor assembly, Signal-regulated kinase, data processing module, wireless transmit mould
Block and power supply；Described sensor assembly includes the Hall current sensor for detecting generator carbon brush electric current and sends out for detection
The temperature sensor of carbon brush for electric machine temperature；
Described Hall current sensor and temperature sensor are arranged on electromotor, and generator carbon brush passes through wire and bolt
Connecting, Hall current sensor through Hall current sensor intermediate throughholes and is fixed on generator carbon brush frame by bolt.Temperature
Degree sensor is arranged near carbon brush.Hall current sensor and temperature sensor outfan defeated with Signal-regulated kinase respectively
Enter end to connect；The outfan of Signal-regulated kinase is connected with data processing module input；Data processing module outfan and nothing
Line transmitter module input connects；Power supply and sensor assembly, Signal-regulated kinase, data processing module and wireless transmitter module
Connect.
Described Signal-regulated kinase includes operational amplifier and low pass filter, opamp input terminal respectively with Hall
Current sensor is connected with temperature sensor outfan；Low pass filter input is connected with operational amplifier output terminal, low pass
Filter output is connected with data processing module input.
In present embodiment, as in figure 2 it is shown, Hall current sensor model is WCS-1500.Temperature sensor model is
PT100, as it is shown on figure 3, operational amplifier 1 uses homophase operational amplifier, Hall current sensor or temperature sensor output
Voltage signal first pass around operational amplifier 1 amplitude limit, voltage signal assignment is controlled in 0-2.5V；Voltage letter after amplitude limit
Number after low pass filter 2 denoising, it is sent to data processing module.Data processing module includes digital signal processor
(Digital Signal Processor, DSP) and peripheral circuit, as shown in Figure 4, DSP model is TMS320F28021, is one
The low power consumption digital signal processor of money 32, works in+3.3V single supply working environment, has been internally integrated 7 Channel 12-Bits
ADC.As it is shown in figure 5, wireless transmitter module uses wireless transmitter module NRF24L01, wherein comprise the radio communication core of 2.4GHz
Sheet is to be connected with DSP by Serial Peripheral Interface (SPI) (Serial Peripheral Interface, SPI).SPI is a kind of high speed
Full duplex synchronous communication bus, practical communication, only with four lines, has saved chip pin, is the cloth of wiring board simultaneously
Office saves space.2.4GHz is open wireless communication frequency band, is also the most conventional a kind of short range wireless transmission technology.
Utilize wireless communication system that this technology manufactures and antenna volume the least, reduce overall power.
In present embodiment, power supply includes voltage source, current source and DC converter.As shown in Figure 6, voltage source is 220V
To 5V power supply, it is connected with Hall current sensor, current source, DC converter, Signal-regulated kinase and wireless transmitter module.As
Shown in Fig. 7, current source is 2mA precision floating current source, uses three-wire system connection to be connected with temperature sensor, accurate floating current
Source output 2mA constant current, along with temperature difference PT100 change in resistance, the electric current flowing through PT100 is constant, so carbon brush
The change of temperature directly translates into the change of PT100 voltage.As shown in Figure 8, DC converter model is ASM1117, with data
Processing module connects, and voltage output terminal connects DC converter and carries out blood pressure lowering, exports+3.3V voltage, after blood pressure lowering at data
Reason module for power supply.
Wireless transmitter module uses wireless connections with display monitoring means.In present embodiment, display monitoring means includes:
Main control unit, on-the-spot display unit, background monitoring center and Switching Power Supply.As it is shown in figure 9, main control unit uses SP3232EEN
Chip communicates wirelessly with wireless transmitter module, and is connected with on-the-spot display unit and background monitoring center by RS232 interface
Connecing, its traffic rate maximum can reach 38400bps, and communication distance is up to 15 meters.Switching Power Supply has+24V and two kinds of voltages of+5V
Output ,+24V voltage is connected with on-the-spot display unit, and+5V voltage is connected with main control unit.
In present embodiment, Hall current sensor, Signal-regulated kinase, power supply, emulation interface, data processing module and
Wireless transmitter module is all welded on pcb board, and wiring relation is as shown in Figure 10.
As shown in figure 11, use generator carbon brush electric current and carbon brush temperature online monitoring system generator carbon brush electric current and
Carbon brush on-line temperature monitoring method, it is characterised in that comprise the steps:
Step 1: power supply is that on-site detecting device is powered；
Step 2: Hall current sensor detection passes through the generator carbon brush electric current of a through hole i.e. through intermediate throughholes
Bolt electric current, and by generator carbon brush electric current with voltage signal export；
Step 3: temperature sensor detection generator carbon brush temperature, and generator carbon brush temperature is exported with voltage signal；
Step 4: Signal-regulated kinase obtains Hall current sensor and the voltage of temperature sensor output, and is believed by voltage
Number amplitude be compressed；
Step 5: to the filtered voltage signal noise after amplitude compression, is sent to the voltage signal of denoising data and processes
Module；
Step 6: the voltage signal received is converted to generator carbon brush electric current and carbon brush temperature by data processing module, and
It is sent to wireless transmitter module:
Step 6.1: measure generator carbon brush electric current, records data processing module when twice carbon brush flows through different electric current and receives
The voltage signal values arrived, and utilize two groups of current values and voltage signal values as the two of carbon brush current-voltage signal linear function
Point, calculates carbon brush current-voltage signal function relation；
Step 6.2: measure generator carbon brush temperature, records data processing module when twice carbon brush is in different temperatures and receives
The voltage signal values arrived, and utilize two groups of temperature values and voltage signal values as the two of carbon brush temperature-voltage signal linear function
Point, calculates carbon brush temperature-voltage signal function relation；
Step 6.3: data processing module receives voltage signal, and by the voltage signal that receives according to carbon brush electric current-electricity
Pressure signal function relation and carbon brush temperature-voltage signal function relation calculate carbon brush electric current and carbon brush temperature；
Step 6.4: carbon brush electric current and carbon brush temperature are sent to wireless transmitter module by data processing module；
Step 7: the generator carbon brush electric current received and carbon brush temperature are used the side of wireless transmit by wireless launcher
Formula is sent to main control unit；
Step 8: main control unit receives the real-time current of the generator carbon brush that on-site detecting device sends and the real-time of carbon brush
Temperature, and it is transmitted to on-the-spot display unit and background monitoring center carries out showing and monitoring.
Claims (4)
1. a generator carbon brush electric current and carbon brush temperature online monitoring system, it is characterised in that including:
On-site detecting device and display monitoring means；
Described on-site detecting device includes: sensor assembly, Signal-regulated kinase, data processing module, wireless transmitter module and
Power supply；Described sensor assembly includes the Hall current sensor for detecting generator carbon brush electric current and for detecting electromotor
The temperature sensor of carbon brush temperature；
Described Hall current sensor and temperature sensor are arranged on electromotor, and Hall current sensor and temperature sensor are defeated
Go out end to be connected with the input of Signal-regulated kinase respectively；The outfan of Signal-regulated kinase is with data processing module input even
Connect；Data processing module outfan is connected with wireless transmitter module input；Power supply and sensor assembly, Signal-regulated kinase,
Data processing module and wireless transmitter module connect；Wireless transmitter module uses wireless connections with display monitoring means.
Generator carbon brush electric current the most according to claim 1 and carbon brush temperature online monitoring system, it is characterised in that described
Generator carbon brush is connected with bolt by wire, and bolt is through Hall current sensor intermediate throughholes and by Hall current sensor
It is fixed on generator carbon brush frame.
Generator carbon brush electric current the most according to claim 1 and carbon brush temperature online monitoring system, it is characterised in that described
Signal-regulated kinase includes operational amplifier and low pass filter, opamp input terminal respectively with Hall current sensor and
Temperature sensor outfan is connected；Low pass filter input is connected with operational amplifier output terminal, low pass filter outfan
It is connected with data processing module input.
4. use generator carbon brush electric current described in claim 1 and the generator carbon brush electric current of carbon brush temperature online monitoring system and
Carbon brush on-line temperature monitoring method, it is characterised in that comprise the steps:
Step 1: power supply is that on-site detecting device is powered；
Step 2: Hall current sensor detection passes through the generator carbon brush electric current of a through hole, and by generator carbon brush electric current
Export with voltage signal；
Step 3: temperature sensor detection generator carbon brush temperature, and generator carbon brush temperature is exported with voltage signal；
Step 4: Signal-regulated kinase obtains Hall current sensor and the voltage of temperature sensor output, and by voltage signal
Amplitude is compressed；
Step 5: to the filtered voltage signal noise after amplitude compression, is sent to the voltage signal of denoising data and processes mould
Block；
Step 6: the voltage signal received is converted to generator carbon brush electric current and carbon brush temperature by data processing module, is sent to
Wireless launcher；
Step 7: the generator carbon brush electric current received and carbon brush temperature are used the mode of wireless transmit to send out by wireless transmitter module
Give display monitoring means；
Step 8: display monitoring means receives carbon brush electric current and carbon brush temperature, and shows carbon brush electric current and carbon brush temperature in real time
Show and monitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610703116.0A CN106291359A (en) | 2016-08-23 | 2016-08-23 | A kind of generator carbon brush electric current and carbon brush temperature online monitoring system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610703116.0A CN106291359A (en) | 2016-08-23 | 2016-08-23 | A kind of generator carbon brush electric current and carbon brush temperature online monitoring system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106291359A true CN106291359A (en) | 2017-01-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610703116.0A Pending CN106291359A (en) | 2016-08-23 | 2016-08-23 | A kind of generator carbon brush electric current and carbon brush temperature online monitoring system and method |
Country Status (1)
| Country | Link |
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| CN (1) | CN106291359A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681841A (en) * | 2017-10-17 | 2018-02-09 | 张宏伟 | Generator can powered dismounting current collecting equipment real-time monitoring system |
| CN111307202A (en) * | 2019-11-19 | 2020-06-19 | 辽宁红德电碳制品有限公司 | Brush material performance detection device |
| CN112098835A (en) * | 2020-08-07 | 2020-12-18 | 国家能源集团山东石横热电有限公司 | Remote real-time monitoring system for excitation carbon brush of generator |
| CN114509173A (en) * | 2022-03-31 | 2022-05-17 | 东方电气集团东方电机有限公司 | Temperature monitoring module of carbon brush and intelligent monitoring device of generator |
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| CN204142833U (en) * | 2014-10-20 | 2015-02-04 | 郭锡辉 | A kind of monitoring device of generator carbon brush electric current |
| CN204679607U (en) * | 2015-06-24 | 2015-09-30 | 重庆交通大学 | Generator carbon brush condition monitoring system |
| CN205157637U (en) * | 2015-10-20 | 2016-04-13 | 辽宁蒲石河抽水蓄能有限公司 | Generator carbon brush current distribution monitoring system |
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Patent Citations (5)
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| CN102169136A (en) * | 2010-02-26 | 2011-08-31 | 马铭远 | Method and system for monitoring brush current of generator on line |
| CN104198804A (en) * | 2014-09-11 | 2014-12-10 | 天津安捷公共设施服务有限公司 | Intelligent current data acquisition method and device based on wireless technology |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681841A (en) * | 2017-10-17 | 2018-02-09 | 张宏伟 | Generator can powered dismounting current collecting equipment real-time monitoring system |
| CN107681841B (en) * | 2017-10-17 | 2019-09-24 | 重庆华能水电设备制造有限公司 | Generator can charge disassembly current collecting equipment real-time monitoring system |
| CN111307202A (en) * | 2019-11-19 | 2020-06-19 | 辽宁红德电碳制品有限公司 | Brush material performance detection device |
| CN112098835A (en) * | 2020-08-07 | 2020-12-18 | 国家能源集团山东石横热电有限公司 | Remote real-time monitoring system for excitation carbon brush of generator |
| CN114509173A (en) * | 2022-03-31 | 2022-05-17 | 东方电气集团东方电机有限公司 | Temperature monitoring module of carbon brush and intelligent monitoring device of generator |
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