CN105043500B - A kind of deep water permanent magnet synchronous motor driver water leakage alarm device - Google Patents
A kind of deep water permanent magnet synchronous motor driver water leakage alarm device Download PDFInfo
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- CN105043500B CN105043500B CN201510553874.4A CN201510553874A CN105043500B CN 105043500 B CN105043500 B CN 105043500B CN 201510553874 A CN201510553874 A CN 201510553874A CN 105043500 B CN105043500 B CN 105043500B
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Abstract
A kind of deep water permanent magnet synchronous motor driver water leakage alarm device.It belongs to the technical field of motor device safety.The square-wave signal output terminal of its high-frequency square-wave signal generator and the signal input part of power amplification circuit connect, the power drive output terminal of power amplification circuit is connected with one end of the primary side winding of isolation boosting transformer T, the other end of isolation boosting transformer T primary side windings is connected with the analog sampling signal input part of one end of resistance R1 and absolute value and comparator circuit, the other end ground connection of resistance R1, one end of the vice-side winding of isolation boosting transformer T is connected by resistance R2 with leak water detdction probe, the signal input part connection of the digital signal output end and optical coupling isolation circuit of absolute value and comparator circuit.The present invention is isolated leak water detdction probe and follow-up signal process circuit using high-frequency step-up transformer, is avoided the crosstalk between signal, is obtained final digital signal with optical coupling isolation circuit, realize the isolation of analog signal and digital signal.
Description
Technical field
The invention belongs to the technical fields of motor device safety.
Background technology
Permanent magnet synchronous motor has reliability height, fault freedom is good, power density is high, torque ripple is small, vibration noise is small
The advantages that, it is widely used in deep water servo-drive system, is surveyed in ship and battleship propulsion, benthoscope propulsion, deep sea resources
The fields of grade have broad application prospects.In general, deep water uses integrated electric motor more with permanent magnet synchronous motor motor servo system
Structure, after motor body design can accommodate the cylinder of driver, fixation covers in its back-end.However, due to the water in deepwater environment
Pressure is very big, so taking the measure full of hydraulic oil in motor body and driver cylinder.
In this special environment, forbid drainage occur, if drainage occurs in driver, can cause
Fault, it is impossible to ensure the normal operation of permanent magnet synchronous motor, entire drive system may be damaged when serious, so setting
There should be leak alarm function when counting driver, this is even more important for the reliability service of whole system.It is asked to solve this
Then topic, existing water leakage alarm technology detect its curent change, and utilize and adopt mostly using immersion probe is installed at easy leak
Sample resistance is translated into method of the voltage signal compared with alarm threshold value voltage to realize leak water detdction.It is however, this
There are some drawbacks for method：First, immersion probe and late-class circuit are not isolated, once leak occur is present with electric leakage now
As that can be interfered to circuit；Secondly, the voltage that needs are higher when detecting leak of popping one's head in makes it conductive to puncture water, therefore electric
Lu Zhongying is designed with booster circuit, while to meet certain power, again, leak water detdction circuit there is no and signal processing circuit
Isolation, is readily incorporated interference, causes the malfunction of driver.
The content of the invention
The object of the present invention is to provide a kind of deep water permanent magnet synchronous motor driver water leakage alarm devices, are to solve to pass
The water leakage alarm technology of system, which exists, does not isolate immersion probe and late-class circuit, once leak occur is present with leaky,
Circuit can be interfered；Secondly, the voltage that needs are higher when detecting leak of popping one's head in makes it conductive to puncture water, therefore in circuit
Booster circuit should be designed with, while to meet certain power, again, leak water detdction circuit there is no and signal processing circuit every
From being readily incorporated interference, cause the malfunction problem of driver.
The purpose is realized by following scheme：A kind of deep water permanent magnet synchronous motor driver leak report
Alarm device, it includes high-frequency square-wave signal generator 1, power amplification circuit 2, absolute value and comparator circuit 3, light-coupled isolation electricity
Road 4, leak water detdction probe 5, isolation boosting transformer T, resistance R1, resistance R2；
The leak water detdction probe 5 is made of the nuditing wire of two spacing 5mm or so；High-frequency square-wave signal generator 1
Square-wave signal output terminal be connected with the signal input part of power amplification circuit 2, the power drive output terminal of power amplification circuit 2
It is connected with one end of the primary side winding of isolation boosting transformer T, the other end and the resistance R1 of isolation boosting transformer T primary side windings
One end connected with the analog sampling signal input part of absolute value and comparator circuit 3, the other end of resistance R1 ground connection, isolation rises
One end of the vice-side winding of pressure transformer T is connected by resistance R2 with one in leak water detdction probe 5 with nuditing wire, and isolation rises
The other end of the vice-side winding of pressure transformer T is connected with another in leak water detdction probe 5 with nuditing wire, absolute value and is compared
The digital signal output end of device circuit 3 is connected with the signal input part of optical coupling isolation circuit 4, and the signal of optical coupling isolation circuit 4 is defeated
Outlet is the digital signal output end of the present apparatus.
The present invention outstanding feature be：1. leak water detdction probe and follow-up signal are handled by electricity using high-frequency step-up transformer
Road isolates, and avoids the crosstalk between signal, enhances the reliability of control system；2. high-frequency step-up transformer is utilized by voltage
200V is risen to, can effectively puncture the water flowed into driver cylinder, be conducive to the detection of leak situation；3. detect sampling resistor both sides
Ac voltage signal basis for estimation of the size as water leakage alarm, and using absolute value circuit be changed into direct current signal with
Alarm threshold value voltage is compared, and water leakage alarm information is converted into digital signal；4. it is obtained finally using optical coupling isolation circuit
Digital signal, realize the isolation of analog signal and digital signal, further prevent the crosstalk between signal, so as to ensure
The more reliable operation of driver.
Description of the drawings
Fig. 1 is the brief configuration schematic block diagram of the present invention.
Specific embodiment
Specific embodiment one：With reference to shown in Fig. 1, illustrate the technical solution of present embodiment, it includes high frequency side
Wave generator 1, power amplification circuit 2, absolute value and comparator circuit 3, optical coupling isolation circuit 4, leak water detdction probe 5,
Isolation boosting transformer T, resistance R1, resistance R2；
The leak water detdction probe 5 is made of the nuditing wire of two spacing 5mm or so；High-frequency square-wave signal generator 1
Square-wave signal output terminal be connected with the signal input part of power amplification circuit 2, the power drive output terminal of power amplification circuit 2
It is connected with one end of the primary side winding of isolation boosting transformer T, the other end and the resistance R1 of isolation boosting transformer T primary side windings
One end connected with the analog sampling signal input part of absolute value and comparator circuit 3, the other end of resistance R1 ground connection, isolation rises
One end of the vice-side winding of pressure transformer T is connected by resistance R2 with one in leak water detdction probe 5 with nuditing wire, and isolation rises
The other end of the vice-side winding of pressure transformer T is connected with another in leak water detdction probe 5 with nuditing wire, absolute value and is compared
The digital signal output end of device circuit 3 is connected with the signal input part of optical coupling isolation circuit 4, and the signal of optical coupling isolation circuit 4 is defeated
Outlet is the digital signal output end of the present apparatus.
The high-frequency square-wave signal generator 1 is made of microcontroller dsPIC30F4011 programmings；Power amplification circuit 2 by
OPA548 power amplifier chips are formed；Universal absolute value circuit that absolute value and comparator circuit 3 are made of LF353 amplifiers and
Comparator is formed；The model TLP521 of optical coupling isolation circuit 4.
Operation principle：The high frequency square wave of 10 kHz is generated by the microcontroller in high-frequency square-wave signal generator 1 first, then
This square-wave signal is subjected to power amplification by power amplification circuit 2, improves square-wave signal voltage and load capacity.Recycle every
High-frequency square-wave signal is boosted into 200V or so from step-up transformer T, and this high-voltage signal is exported in leak water detdction probe 5
Two nuditing wires on.The electric current of isolation boosting transformer T primary sides is detected using sampling resistor R1, when there is no leak, every
Voltage breakdown does not occur from step-up transformer T secondary high pressures, without electric current, therefore primary current is also smaller；And when leak occurs,
The high pressure that isolation boosting transformer T secondary generates wears water attack by two nuditing wires in leak water detdction probe 5, generate compared with
High current, while primary side also generates electric current, its current signal is converted into voltage signal using the sampling resistor R1 of primary side, is passed through
This voltage swing is detected to realize leak water detdction.Since the voltage signal remains as AC signal, therefore this voltage signal is passed through again
The absolute value built by amplifier amplifier and comparator circuit 3 are crossed, is converted into direct current signal again by this d. c. voltage signal and one
A threshold voltage passes through comparator voltage, obtains digital signal, finally by 4 isolation voltage of optical coupling isolation circuit, is converted
For final water leakage alarm signal, center microcontroller is fed back to realize water leakage alarm.
Claims (1)
1. a kind of deep water permanent magnet synchronous motor driver water leakage alarm device, it is characterised in that it includes high-frequency square-wave signal
Device（1）, power amplification circuit（2）, absolute value and comparator circuit（3）, optical coupling isolation circuit（4）, leak water detdction probe（5）、
Isolation boosting transformer T, resistance R1, resistance R2；
The leak water detdction probe（5）It is made of the nuditing wire of two spacing 5mm or so；High-frequency square-wave signal generator（1）
Square-wave signal output terminal and power amplification circuit（2）Signal input part connection, power amplification circuit（2）Power drive it is defeated
Outlet is connected with one end of the primary side winding of isolation boosting transformer T, the other end and the electricity of isolation boosting transformer T primary side windings
One end of resistance R1 and absolute value and comparator circuit（3）Analog sampling signal input part connection, resistance R1 the other end ground connection,
One end of the vice-side winding of isolation boosting transformer T passes through resistance R2 and leak water detdction probe（5）In one with nuditing wire connect
It connects, the other end and leak water detdction probe of the vice-side winding of isolation boosting transformer T（5）In it is another with nuditing wire connect,
Absolute value and comparator circuit（3）Digital signal output end and optical coupling isolation circuit（4）Signal input part connection, optocoupler every
From circuit（4）Signal output part be the present apparatus digital signal output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510553874.4A CN105043500B (en) | 2015-09-02 | 2015-09-02 | A kind of deep water permanent magnet synchronous motor driver water leakage alarm device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510553874.4A CN105043500B (en) | 2015-09-02 | 2015-09-02 | A kind of deep water permanent magnet synchronous motor driver water leakage alarm device |
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| Publication Number | Publication Date |
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| CN105043500A CN105043500A (en) | 2015-11-11 |
| CN105043500B true CN105043500B (en) | 2018-05-22 |
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| CN201510553874.4A Active CN105043500B (en) | 2015-09-02 | 2015-09-02 | A kind of deep water permanent magnet synchronous motor driver water leakage alarm device |
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| CN113320555A (en) * | 2021-04-19 | 2021-08-31 | 北京北交新能科技有限公司 | High-isolation and voltage-withstanding battery management system for rail transit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1417575A (en) * | 2002-11-21 | 2003-05-14 | 河源市雅达电子有限公司 | Detection alarm of conducting liquid |
| CN2757101Y (en) * | 2004-12-22 | 2006-02-08 | 黑龙江国脉通信技术支援有限公司 | Water immersion detector |
| CN201229196Y (en) * | 2008-07-22 | 2009-04-29 | 王睿哲 | Water immersion detecting device |
| EP2466286A1 (en) * | 2010-12-15 | 2012-06-20 | Fibre Optics CT GmbH Consulting & Testing | Fibre optic water reporting system |
| CN204001014U (en) * | 2014-08-12 | 2014-12-10 | 通威股份有限公司 | A kind of submersible type dredger with water leakage monitoring function |
-
2015
- 2015-09-02 CN CN201510553874.4A patent/CN105043500B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1417575A (en) * | 2002-11-21 | 2003-05-14 | 河源市雅达电子有限公司 | Detection alarm of conducting liquid |
| CN2757101Y (en) * | 2004-12-22 | 2006-02-08 | 黑龙江国脉通信技术支援有限公司 | Water immersion detector |
| CN201229196Y (en) * | 2008-07-22 | 2009-04-29 | 王睿哲 | Water immersion detecting device |
| EP2466286A1 (en) * | 2010-12-15 | 2012-06-20 | Fibre Optics CT GmbH Consulting & Testing | Fibre optic water reporting system |
| CN204001014U (en) * | 2014-08-12 | 2014-12-10 | 通威股份有限公司 | A kind of submersible type dredger with water leakage monitoring function |
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| CN105043500A (en) | 2015-11-11 |
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Inventor after: Xu Yongxiang Inventor after: Yan Hao Inventor after: Zou Jibin Inventor after: Yu Guodong Inventor before: Xu Yongxiang Inventor before: Yan Hao Inventor before: Zou Jibin Inventor before: Wang Baochao Inventor before: Liu Jian Inventor before: Hu Jianhui Inventor before: Shang Jing Inventor before: Wang Jian Inventor before: Liu Chengjun |
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Effective date of registration: 20200731 Address after: 2 / F, No.7 factory building, No.32, Bohai Road, Harbin Economic Development Zone, Heilongjiang Province Patentee after: Harbin Institute of technology Shenneng Motor Co., Ltd Address before: 150000 Harbin, Nangang, West District, large straight street, No. 92 Patentee before: HARBIN INSTITUTE OF TECHNOLOGY |
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