CN107154326A - Omnipotent breaker intelligent controller with automatic measurement contact system temperature - Google Patents
Omnipotent breaker intelligent controller with automatic measurement contact system temperature Download PDFInfo
- Publication number
- CN107154326A CN107154326A CN201710317599.5A CN201710317599A CN107154326A CN 107154326 A CN107154326 A CN 107154326A CN 201710317599 A CN201710317599 A CN 201710317599A CN 107154326 A CN107154326 A CN 107154326A
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- CN
- China
- Prior art keywords
- temperature
- intelligent controller
- breaker
- contact system
- temperature sensor
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention relates to a kind of omnipotent breaker intelligent controller with automatic measurement contact system temperature.Laid in circuit breaker internal contact system and fill temperature sensor respectively inside three current transformers, each current transformer；Temperature sensor secondary singal is connected to temperature detection input port；Reference voltage source produces the Electromotive Difference Of Potential input operational amplifier changed on accurate DC2.5V reference voltage sources, resistance bridge measurement temperature sensor, then inputs intelligent controller microprocessor；Intelligent controller microprocessor is converted into temperature and is shown in user interface or output alarm signal to relay or omnipotent breaker dropout disjunction node.The present invention utilizes existing product upgrading；0 to 600 DEG C of observable temperature, 0.1 DEG C of precision, the wide precision of acquisition range is high；User can constantly check temperature of circuit breaker contact, by measuring monitoring and prefabricated setting power-off cooling or warning output, and protection networking is normally run, and preventing overheat scaling loss breaker and disaster hidden-trouble has huge effect.
Description
Technical field
It is more particularly to a kind of that there is automatic measurement to contact system the invention belongs to a kind of omnipotent breaker intelligent controller
The omnipotent breaker intelligent controller for temperature of uniting.
Background technology
Current DW45 Series Air Circuit Breakers are the air-breaks of China's independent research nineties, it is adaptable to exchanged
In 50hz, operating voltage AC400/AC690V, the power network loop of rated operational current to 7500A, distribution electric energy and protection are played
Circuit, equipment are from harm such as overload, short circuit, deficient overvoltages；Omnipotent breaker generally as whole low-voltage distribution system by
Master switch is used, in normal work, because breaker body interior contact contact system is chronically at carrying loop current, production
Raw substantial amounts of heat is with use time conductor itself and external change, and circuit breaker internal heat is conducted to outside efficiency
Drop, can cause breaker bulk temperature too high until burning, user's large-area power-cuts, or disaster hidden-trouble be caused, in order to keep away for a long time
Exempt from the generation of above accident, generally using Infrared Hand-Held equipment carry out detection temperature using artificial now, but can only periodically,
Disconnected detection breaker body external user conductor part, it is impossible to the change of monitoring breaker inner heat source temperature, is directly affected
Breaker and the normal operation of line loop.
The content of the invention
The present invention provides a kind of with automatic measurement contact system temperature to solve technical problem present in known technology
The omnipotent breaker intelligent controller of degree.
The present invention is adopted the technical scheme that to solve technical problem present in known technology：It includes equipped with institute
The omnipotent breaker of intelligent controller is stated, is laid near the circuit breaker internal contact system for gathering three-phase current
Three current transformers, are respectively mounted a temperature sensor inside the current transformer；Described temperature sensor two
Secondary signal conductor is connected to the special temperature of the circuit breaker intelligent controller using the secondary outgoing line installation site of current transformer
Input port during detection, carries out signal condition；One reference voltage source produces an accurate DC2.5V reference voltage source, with favour this
The Electromotive Difference Of Potential input operational amplifier for varying with temperature and changing on temperature sensor described in bridge measurement that pauses carries out difference and put
After big, then input the intelligent controller microprocessor that progress A/D is scaled Temperature numerical；The intelligent controller microprocessor
Device conversion completes signal input after temperature and is shown in the temperature that the user interface of the intelligent controller or input prestore with user
Being set for the microprocessor of logic judgment, output alarm signal to relay or is output to the omnipotent breaker again
Dropout disjunction node.
The present invention has the advantages and positive effects of：Controller circuitry utilizes the electric current being arranged in breaker body mutual
Sensor inner space mounting temperature sensor, does not influence design, and upgrading improvement is carried out beneficial to existing product；Temperature sensor measurement
0 degree Celsius to 600 degrees Celsius of temperature, 0.1 degree Celsius of precision, acquisition range is wide, and precision is high；User can pass through itself breaker control
Device processed constantly checks temperature of circuit breaker contact, convenient and reliable；It can constantly be monitored by measuring, and power-off is set for according to prefabricated
Cooling or warning output, protection circuit, to ensureing that power network line is normally run, prevent overheat scaling loss breaker, disaster hidden-trouble tool
Play the role of huge.
Brief description of the drawings
Fig. 1 is the electrical schematic diagram of the present invention.
Embodiment
For present disclosure, feature and effect can be further appreciated that, hereby enumerate in following three phases of intelligent controller
The embodiment that the control circuit of one phase is constituted, and it is as follows to coordinate accompanying drawing to describe in detail：
As shown in figure 1, system working power+5V and electric capacity C1 one end, reference power supply chip U1 in ends connection；Benchmark
Power supply chip U1 out ends output+2.5V accurate reference power supply, with C2 electric capacity one end, resistance R1 one end, resistance R2 one end connects
Connect；Temperature sensor U2 the 1st terminal is connected with resistance R3 one end；Temperature sensor U2 the 2nd terminal is another with resistance R1's
End, the connection of resistance R5 one end；The other end of the resistance R3 other ends and resistance R2, the connection of resistance R6 one end；Operational amplifier U3A is same
Phase input and the resistance R5 other ends, the connection of resistance R4 one end；Operational amplifier U3A inverting inputs and the resistance R6 other ends,
Resistance R7 one end is connected；Operational amplifier U3A output ends and the resistance R7 other ends, voltage-regulator diode D1 negative electrodes, microprocessor U4
The 24th terminal A/D conversion ports connection；The terminals of operational amplifier U3A the 4th and working power+5V, electric capacity C3 one end are connected；
Microprocessor U4 the 27th terminal is connected with resistance R9 one end；Microprocessor U4 the 2nd terminal is connected with resistance R8 one end；Resistance
The R8 other ends are connected with triode Q1 base stages；Triode Q1 colelctor electrodes are connected with relay RJ coils one end；Relay RJ coils
The other end is connected with power supply+24V；The normally opened node two ends of relay RJ respectively with terminal JP1 the 1st, the 2nd terminal is connected；Resistance
The R9 other ends are connected with triode Q2 base stages；Triode Q2 colelctor electrodes are connected with magnetic flow convertor coil L one end；Magnetic flow convertor
The coil L other ends are connected with power supply+24V；Temperature sensor U2 the 3rd terminal, the electric capacity C1 other end, the electric capacity C2 other end
The electric capacity C3 other end, reference power supply chip U1 gnd ends, resistance R4 one end, the terminals of operational amplifier U3A the 11st, voltage stabilizing two
Pole pipe anode, triode Q1 emitter stages, triode Q2 emitter stages are with being systematically connected.
The PIC series and DSPIC series of Wei Xin companies of the U.S. can be used as the processor of controller, American TI Company
C2000 series, the ATmage series of American ATMEL can.
Specific works mode process is as follows：
When omnipotent breaker controller is run, this circuit will enter running status；This circuit uses temperature sensor
U2 constitutes resistance bridge with precision resistance R1, R2, R3, and electric bridge constant voltage source is by reference power supply chip U1 and electric capacity C1, C2
Temperature sensor in one+2.5V voltage source, electric bridge is provided and, as temperature change resistance carries out ratio change, causes resistance
The ratio change that the electromotive force that electric bridge is exported between resistance R3, R2 between R1, temperature sensor is varied with temperature；Output
Electromotive force, which enters, operational amplifier U3A and resistance R5, R6, R7, and the differential amplifier circuit of electric capacity C3 compositions carries out electromotive force
Scaling, identification and conversion work so as to the A/D conversion ports that provide microprocessor U4, voltage-regulator diode D1 are used to protect
The A/D converter that the electromotive force signal amplitude of output does not result in microprocessor U4 is damaged；Microprocessor U4 is by analog signal
Electromotive force is converted to data signal and passing ratio formula scales are Temperature numerical, and is shown by microprocessor U4 by controller
Port display data is checked for user；After user's setting protection temperature, microprocessor U4, according to the temperature set according to user
Contrasted with the temperature that gathers out；If temperature exceedes user, setting controller will be according to user's way of output set in advance
Driving magnetic flow convertor coil L by circuit breaker tripping cutoff circuit cool or relay RJ adhesives export a closure state section
Point, by user's linkage cooling system or warning system；When temperature is not less than user's design temperature, controller will be advance according to user
The way of output of setting does not drive magnetic flow convertor coil L, and breaker will remain up loop or relay RJ releases output one
The node of individual off-state, stops cooling system or the warning system linked by user.
Claims (1)
1. a kind of omnipotent breaker intelligent controller with automatic measurement contact system temperature, it includes equipped with the intelligence
The omnipotent breaker of energy controller, it is characterized in that：Laid near the circuit breaker internal contact system for gathering three-phase
Three current transformers of electric current, are respectively mounted a temperature sensor inside each current transformer；Described temperature
Degree sensor secondary singal wire is connected to the breaker intelligent control using the secondary outgoing line installation site of current transformer
Input port during device special temperature detection, carries out signal condition；One reference voltage source produces an accurate DC2.5V benchmark electricity
Potential source, the Electromotive Difference Of Potential input operational amplifier for varying with temperature and changing on the temperature sensor is measured with resistance bridge
Carry out after differential amplification, then input the intelligent controller microprocessor that progress A/D is scaled Temperature numerical；The intelligence control
Device microprocessor conversion processed completes user interface or input and the user that signal input after temperature is shown in the intelligent controller
The temperature prestored is set for the microprocessor of logic judgment, and output alarm signal to relay or is output to described ten thousand again
Can formula circuit breaker tripping disjunction node.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710317599.5A CN107154326A (en) | 2017-05-08 | 2017-05-08 | Omnipotent breaker intelligent controller with automatic measurement contact system temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710317599.5A CN107154326A (en) | 2017-05-08 | 2017-05-08 | Omnipotent breaker intelligent controller with automatic measurement contact system temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107154326A true CN107154326A (en) | 2017-09-12 |
Family
ID=59792656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710317599.5A Pending CN107154326A (en) | 2017-05-08 | 2017-05-08 | Omnipotent breaker intelligent controller with automatic measurement contact system temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107154326A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303643A (en) * | 2018-01-15 | 2018-07-20 | 温州大学苍南研究院 | A kind of method for fast measuring of miniature circuit breaker thermal time constant |
| CN108333502A (en) * | 2018-01-15 | 2018-07-27 | 温州大学苍南研究院 | A method of measuring miniature circuit breaker operating temperature |
| CN112017873A (en) * | 2020-08-25 | 2020-12-01 | 王云保 | Circuit breaker integrated with wireless temperature measuring sensor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0279368B1 (en) * | 1987-02-19 | 1995-02-01 | E.G.O. Elektro-Geräte Blanc und Fischer GmbH & Co. KG | Temperature limiter |
| KR200445114Y1 (en) * | 2008-07-17 | 2009-06-30 | 김왕산 | Circuit breaker having trip terminal coupled with multiple sensors |
| EP2458611A1 (en) * | 2010-11-29 | 2012-05-30 | Eaton Industries GmbH | Switching device and external control module |
| CN203800580U (en) * | 2014-05-12 | 2014-08-27 | 浙江科能达电气有限公司 | Intelligent controller for low voltage breaker |
| CN104062025A (en) * | 2014-07-09 | 2014-09-24 | 成都千嘉科技有限公司 | Energy-saving automatic AD temperature collecting monitoring system |
| CN204903084U (en) * | 2015-07-22 | 2015-12-23 | 苏州大学 | Intelligence torque wrench verification system |
| CN206920040U (en) * | 2017-05-08 | 2018-01-23 | 天津市百利电气有限公司 | Omnipotent breaker internal temperature rise measures intelligent controller |
-
2017
- 2017-05-08 CN CN201710317599.5A patent/CN107154326A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0279368B1 (en) * | 1987-02-19 | 1995-02-01 | E.G.O. Elektro-Geräte Blanc und Fischer GmbH & Co. KG | Temperature limiter |
| KR200445114Y1 (en) * | 2008-07-17 | 2009-06-30 | 김왕산 | Circuit breaker having trip terminal coupled with multiple sensors |
| EP2458611A1 (en) * | 2010-11-29 | 2012-05-30 | Eaton Industries GmbH | Switching device and external control module |
| CN203800580U (en) * | 2014-05-12 | 2014-08-27 | 浙江科能达电气有限公司 | Intelligent controller for low voltage breaker |
| CN104062025A (en) * | 2014-07-09 | 2014-09-24 | 成都千嘉科技有限公司 | Energy-saving automatic AD temperature collecting monitoring system |
| CN204903084U (en) * | 2015-07-22 | 2015-12-23 | 苏州大学 | Intelligence torque wrench verification system |
| CN206920040U (en) * | 2017-05-08 | 2018-01-23 | 天津市百利电气有限公司 | Omnipotent breaker internal temperature rise measures intelligent controller |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303643A (en) * | 2018-01-15 | 2018-07-20 | 温州大学苍南研究院 | A kind of method for fast measuring of miniature circuit breaker thermal time constant |
| CN108333502A (en) * | 2018-01-15 | 2018-07-27 | 温州大学苍南研究院 | A method of measuring miniature circuit breaker operating temperature |
| CN108303643B (en) * | 2018-01-15 | 2020-05-05 | 温州大学苍南研究院 | Method for rapidly measuring thermal time constant of miniature circuit breaker |
| CN108333502B (en) * | 2018-01-15 | 2020-05-05 | 温州大学苍南研究院 | Method for measuring action temperature of miniature circuit breaker |
| CN112017873A (en) * | 2020-08-25 | 2020-12-01 | 王云保 | Circuit breaker integrated with wireless temperature measuring sensor |
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Application publication date: 20170912 |
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| WD01 | Invention patent application deemed withdrawn after publication |