CN104849631A - Locomotive roof insulation testing system - Google Patents
Locomotive roof insulation testing system Download PDFInfo
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- CN104849631A CN104849631A CN201510249886.8A CN201510249886A CN104849631A CN 104849631 A CN104849631 A CN 104849631A CN 201510249886 A CN201510249886 A CN 201510249886A CN 104849631 A CN104849631 A CN 104849631A
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Abstract
The invention discloses a locomotive roof insulation testing system, which comprises a power supply control module (1), a high voltage generation module (2), a test interface module (3), a test condition signal input module (4), an MCU module (5), a man-machine interface module (6), and a data communication module (7). When the system is used for testing, operation of a next step can only be carried out when the test condition signal is detected to be in a correct state; when the condition is met and necessary test personnel information is inputted, a testing key is pressed for insulation resistance testing. The detected insulation resistance value is displayed via an LCD after the test is completed, and a testing conclusion of whether the roof insulation resistance is qualified is given; and during the testing process, state voice prompt for each step or method of operation of the next step exists. A convenient means is provided for locomotive roof insulation testing, and safe operation and management on the locomotive are enhanced.
Description
Technical field
The present invention relates to megger test field, particularly a kind of locomotive roof insulation testing system.
Background technology
Power locomotive top high-tension apparatus is outdoor installation, and its insulation is easily subject to the impact of external environment, for ensureing locomotive operation safety, needing regularly or detecting top insulation situation.
Existing top insulation detects and mainly contains two kinds of modes, and a kind of mode climbs up roof by operating personnel to adopt megohmmeter to test, although this mode is direct, convenient not, operating personnel climbs up roof and also there is potential safety hazard.Another kind of mode by installing the detection of a kind of special test equipment realization to top insulation in locomotive, locomotive DC 110V power inverter is the secondary side that AC100V sends into high-voltage mutual inductor by this equipment, produce the high pressure of AC25KV thus at the primary side of mutual inductor, tester judges locomotive roof state of insulation according to the voltage display of cab voltage table.Although this mode is comparatively convenient and safe, the insulating resistance value of precise quantification cannot be provided.Above-mentioned two kinds of modes do not have the automatic recording function of tester's identity information and test result simultaneously, do not possess management function, leave leak to safety management.
Summary of the invention
The invention provides a kind of locomotive roof insulation testing system, by hardware composition module and the normalized design proposal of operating process, to overcome the deficiency of existing test macro in security, measuring accuracy and management function etc.
The technical solution used in the present invention is, a kind of locomotive roof insulation testing system, comprises energy supply control module (1), high pressure generation module (2), test interface module (3), test condition signal input module (4), MCU module (5), human-machine interface module (6) and data communication module (7), it is characterized in that, described energy supply control module (1) input end connects locomotive DC110V power supply, output terminal is connected with the input end of high pressure generation module (2), and the control signal input end of energy supply control module (1) is connected with the input/output port P1.0 of MCU module (5), the output terminal of described high pressure generation module (2) is connected with the input end of test interface module (3), and the input of high pressure generation module (2) and control end are connected with the AD1 port of MCU module (5) and PWM1 port respectively, described test interface module (3) is installed in top insulation, and its output terminal is connected with measurand, and the control input end of test interface module (3) is connected with the input/output port P1.1 of MCU module (5), the signal input part of described test condition signal input module (4) is connected with 8 travel permit part input signal extension lines, multichannel condition entry signal comprises pantograph and falls bow signal, top door closure signal, driver's key signal, main circuit breaker cut-off signal and 4 road spare input signals, the corresponding 8 travel permit part input signals of conditioned signal load module (4) are provided with 8 level configuration switchs, for being converted to 8 road high level outputs by unified for condition entry signal, 8 tunnel output signals are connected by the input/output port P1.2 of AND circuit output terminal with MCU module (5).
A kind of locomotive roof insulation testing system that the present invention relates to, its workflow comprises the steps.
S1: switch on power switch, system electrification carries out initialization, the input/output port P1.0 output low level of MCU module (5), make energy supply control module (1) no-output, the PWM1 port locking of MCU module (5) exports, make high pressure generation module (2) without High voltage output, enter step S2.
S2:MCU module (5) detects P1.2 input/output port level, judge whether the output signal of test condition signal input module (4) is high level, if not high level then human-machine interface module (6) provide the voice message of " not possessing test condition ", wait test condition is ready, if high level then enters step S3.
S3: the ready lamp of test condition of human-machine interface module (6) is bright, wait for input test person number, if MCU module (5) does not detect the input settling signal of human-machine interface module (6), then human-machine interface module (6) " asks input test person number " every voice message in 10 seconds, if complete input, enters step S4.
The tester numbering of S4:MCU module (5) to input is mated, if illegally number, then human-machine interface module (6) provides voice message " tester numbers incorrect; please re-enter ", return step S2, if input numbering is correct, then enter step S5.
S5: if MCU module (5) does not detect the beginning test signal of human-machine interface module (6), then human-machine interface module (6) " is please tested by test button " every voice message in 10 seconds, if test key-press input signal detected, enter step S6.
S6: human-machine interface module (6) provides voice message " please wait for that test completes ", the input/output port P1.1 of MCU module (5) exports high level, test interface module (3) connects measurand, the input/output port P1.0 of MCU module (5) exports high level, make energy supply control module (1) output terminal out-put supply to high pressure generation module (2), enter step S7.
The PWM1 port output pwm signal of S7:MCU module (5), control high pressure generation module (2) and export high pressure to test interface module (3), MCU module (5) is by AD1 port processing current sensing signal, MCU module (5) calculates the insulating resistance value of measurand, has calculated and has entered step S8.
The insulating resistance value of calculating and the insulation resistance acceptance value preset compare by S8:MCU module (5), if the insulating resistance value calculated is greater than acceptance value, then human-machine interface module (6) provides voice message " test completes; insulation is normal ", otherwise provide the voice message of " test completes, Abnormal Insulation "; Meanwhile, human-machine interface module (6) provides the insulating resistance value of test and the display of " insulation is normal " or " Abnormal Insulation " by LCD, enters step S9.
The PWM1 port locking pwm signal of S9:MCU module (5), stops high pressure generation module (2) to export high pressure, enters step S10.
Test result is preserved by S10:MCU module (5), enters step S11.
S11: time delay 60 seconds, human-machine interface module (6) provides voice message and " retests please by test button ", if detect between time delay, test button presses signal, returns step S5, press power button between time delay or time delay terminates, enter step S12.
The input/output port P1.1 output low level of S12:MCU module (5), test interface module (3) and measurand are disconnected, the input/output port P1.0 output low level of MCU module (5), energy supply control module (1) output terminal is made to disconnect test interface module (3) power supply, the ready lamp of test condition goes out, and system exits test ready state.
Accompanying drawing explanation
Fig. 1 is the structural drawing of a kind of locomotive roof insulation testing system of the present invention.
Fig. 2 is the workflow diagram of a kind of locomotive roof insulation testing system of the present invention.
Embodiment
For security, the demand such as measuring accuracy and management function of locomotive roof Insulation test, the invention provides a kind of locomotive roof insulation testing system, below in conjunction with accompanying drawing, specific embodiments of the invention are described further.
A kind of locomotive roof insulation testing system, comprises energy supply control module (1), high pressure generation module (2), test interface module (3), test condition signal input module (4), MCU module (5), human-machine interface module (6) and data communication module (7), it is characterized in that, described energy supply control module (1) input end connects locomotive DC110V power supply, output terminal is connected with the input end of high pressure generation module (2), and the control signal input end of energy supply control module (1) is connected with the input/output port P1.0 of MCU module (5), the output terminal of described high pressure generation module (2) is connected with the input end of test interface module (3), and the input of high pressure generation module (2) and control end are connected with the AD1 port of MCU module (5) and PWM1 port respectively, described test interface module (3) is installed in top insulation, and its output terminal is connected with measurand, and the control input end of test interface module (3) is connected with the input/output port P1.1 of MCU module (5), the signal input part of described test condition signal input module (4) is connected with 8 travel permit part input signal extension lines, multichannel condition entry signal comprises pantograph and falls bow signal, top door closure signal, driver's key signal, main circuit breaker cut-off signal and 4 road spare input signals, the corresponding 8 travel permit part input signals of conditioned signal load module (4) are provided with 8 level configuration switchs, for being converted to 8 road high level outputs by unified for condition entry signal, 8 tunnel output signals are connected by the input/output port P1.2 of AND circuit output terminal with MCU module (5).
Described high pressure generation module (2) adopts the converter topology structure of single-ended flyback, by the ON time of the PWM1 port control circuit switching device of MCU module (5), thus stably output voltage.
Described test interface module (3) core is G64-A741 type high-voltage relay.
Data communication module of the present invention (7) comprises RS232/485 serial line interface and USB interface, and RS232/485 realizes by test record data upload to host computer, and the test record of preserving in device can be kept in USB flash disk by USB interface.
A kind of locomotive roof insulation testing system that the present invention relates to, its workflow comprises the steps.
S1: switch on power switch, system electrification carries out initialization, the input/output port P1.0 output low level of MCU module (5), make energy supply control module (1) no-output, the PWM1 port locking of MCU module (5) exports, make high pressure generation module (2) without High voltage output, enter step S2.
S2:MCU module (5) detects P1.2 input/output port level, judge whether the output signal of test condition signal input module (4) is high level, if not high level then human-machine interface module (6) provide the voice message of " not possessing test condition ", wait test condition is ready, if high level then enters step S3.
S3: the ready lamp of test condition of human-machine interface module (6) is bright, wait for input test person number, if MCU module (5) does not detect the input settling signal of human-machine interface module (6), then human-machine interface module (6) " asks input test person number " every voice message in 10 seconds, if complete input, enters step S4.
The tester numbering of S4:MCU module (5) to input is mated, if illegally number, then human-machine interface module (6) provides voice message " tester numbers incorrect; please re-enter ", return step S2, if input numbering is correct, then enter step S5.
S5: if MCU module (5) does not detect the beginning test signal of human-machine interface module (6), then human-machine interface module (6) " is please tested by test button " every voice message in 10 seconds, if test key-press input signal detected, enter step S6.
S6: human-machine interface module (6) provides voice message " please wait for that test completes ", the input/output port P1.1 of MCU module (5) exports high level, test interface module (3) connects measurand, the input/output port P1.0 of MCU module (5) exports high level, make energy supply control module (1) output terminal out-put supply to high pressure generation module (2), enter step S7.
The PWM1 port output pwm signal of S7:MCU module (5), control high pressure generation module (2) and export high pressure to test interface module (3), MCU module (5) is by AD1 port processing current sensing signal, MCU module (5) calculates the insulating resistance value of measurand, has calculated and has entered step S8.
The insulating resistance value of calculating and the insulation resistance acceptance value preset compare by S8:MCU module (5), if the insulating resistance value calculated is greater than acceptance value, then human-machine interface module (6) provides voice message " test completes; insulation is normal ", otherwise provide the voice message of " test completes, Abnormal Insulation "; Meanwhile, human-machine interface module (6) provides the insulating resistance value of test and the display of " insulation is normal " or " Abnormal Insulation " by LCD, enters step S9.
The PWM1 port locking pwm signal of S9:MCU module (5), stops high pressure generation module (2) to export high pressure, enters step S10.
Test result is preserved by S10:MCU module (5), enters step S11.
S11: time delay 60 seconds, human-machine interface module (6) provides voice message and " retests please by test button ", if detect between time delay, test button presses signal, returns step S5, press power button between time delay or time delay terminates, enter step S12.
The input/output port P1.1 output low level of S12:MCU module (5), test interface module (3) and measurand are disconnected, the input/output port P1.0 output low level of MCU module (5), energy supply control module (1) output terminal is made to disconnect test interface module (3) power supply, the ready lamp of test condition goes out, and system exits test ready state.
Above-described embodiments of the present invention; not become the restriction of scope; if carry out various distortion or amendment to embodiment of the present invention, but still within the spirit and principles in the present invention, all should be included within claims of the present invention.
Claims (2)
1. a locomotive roof insulation testing system, comprises energy supply control module (1), high pressure generation module (2), test interface module (3), test condition signal input module (4), MCU module (5), human-machine interface module (6) and data communication module (7), it is characterized in that, described energy supply control module (1) input end connects locomotive DC110V power supply, output terminal is connected with the input end of high pressure generation module (2), and the control signal input end of energy supply control module (1) is connected with the input/output port P1.0 of MCU module (5), the output terminal of described high pressure generation module (2) is connected with the input end of test interface module (3), and the input of high pressure generation module (2) and control end are connected with the AD1 port of MCU module (5) and PWM1 port respectively, described test interface module (3) is installed in top insulation, and its output terminal is connected with measurand, and the control input end of test interface module (3) is connected with the input/output port P1.1 of MCU module (5), the signal input part of described test condition signal input module (4) is connected with 8 travel permit part input signal extension lines, multichannel condition entry signal comprises pantograph and falls bow signal, top door closure signal, driver's key signal, main circuit breaker cut-off signal and 4 road spare input signals, the corresponding 8 travel permit part input signals of conditioned signal load module (4) are provided with 8 level configuration switchs, for being converted to 8 road high level outputs by unified for condition entry signal, 8 tunnel output signals are connected by the input/output port P1.2 of AND circuit output terminal with MCU module (5).
2. a kind of locomotive roof insulation testing system according to claim 1, it is characterized in that, the workflow of this system comprises the steps:
S1: switch on power switch, system electrification carries out initialization, the input/output port P1.0 output low level of MCU module (5), make energy supply control module (1) no-output, the PWM1 port locking of MCU module (5) exports, make high pressure generation module (2) without High voltage output, enter step S2;
S2:MCU module (5) detects P1.2 input/output port level, judge whether the output signal of test condition signal input module (4) is high level, if not high level then human-machine interface module (6) provide the voice message of " not possessing test condition ", wait test condition is ready, if high level then enters step S3;
S3: the ready lamp of test condition of human-machine interface module (6) is bright, wait for input test person number, if MCU module (5) does not detect the input settling signal of human-machine interface module (6), then human-machine interface module (6) " asks input test person number " every voice message in 10 seconds, if complete input, enters step S4;
The tester numbering of S4:MCU module (5) to input is mated, if illegally number, then human-machine interface module (6) provides voice message " tester numbers incorrect; please re-enter ", return step S2, if input numbering is correct, then enter step S5;
S5: if MCU module (5) does not detect the beginning test signal of human-machine interface module (6), then human-machine interface module (6) " is please tested by test button " every voice message in 10 seconds, if test key-press input signal detected, enter step S6;
S6: human-machine interface module (6) provides voice message " please wait for that test completes ", the input/output port P1.1 of MCU module (5) exports high level, test interface module (3) connects measurand, the input/output port P1.0 of MCU module (5) exports high level, make energy supply control module (1) output terminal out-put supply to high pressure generation module (2), enter step S7;
The PWM1 port output pwm signal of S7:MCU module (5), control high pressure generation module (2) and export high pressure to test interface module (3), MCU module (5) is by AD1 port processing current sensing signal, MCU module (5) calculates the insulating resistance value of measurand, has calculated and has entered step S8;
The insulating resistance value of calculating and the insulation resistance acceptance value preset compare by S8:MCU module (5), if the insulating resistance value calculated is greater than acceptance value, then human-machine interface module (6) provides voice message " test completes; insulation is normal ", otherwise provide the voice message of " test completes, Abnormal Insulation "; Meanwhile, human-machine interface module (6) provides the insulating resistance value of test and the display of " insulation is normal " or " Abnormal Insulation " by LCD, enters step S9;
The PWM1 port locking pwm signal of S9:MCU module (5), stops high pressure generation module (2) to export high pressure, enters step S10;
Test result is preserved by S10:MCU module (5), enters step S11;
S11: time delay 60 seconds, human-machine interface module (6) provides voice message and " retests please by test button ", if detect between time delay, test button presses signal, returns step S5, press power button between time delay or time delay terminates, enter step S12;
The input/output port P1.1 output low level of S12:MCU module (5), test interface module (3) and measurand are disconnected, the input/output port P1.0 output low level of MCU module (5), energy supply control module (1) output terminal is made to disconnect test interface module (3) power supply, the ready lamp of test condition goes out, and system exits test ready state.
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| US20050258933A1 (en) * | 2004-05-20 | 2005-11-24 | Von Duprin, Inc | Electronic security system |
| CN201440161U (en) * | 2009-07-28 | 2010-04-21 | 中国北车集团大同电力机车有限责任公司 | Locomotive top insulation detection equipment for locomotive |
| CN202256586U (en) * | 2011-09-29 | 2012-05-30 | 成都畅通机车车辆技术开发有限公司 | Dielectric withstand voltage testing device for roof of electric locomotive |
| CN203551726U (en) * | 2013-10-19 | 2014-04-16 | 山西智济电子科技有限公司 | Electric locomotive roof insulation detecting device |
| CN203551727U (en) * | 2013-10-19 | 2014-04-16 | 北京卓匠科创科技有限公司 | Electric locomotive roof insulation detector |
| CN204228897U (en) * | 2014-11-21 | 2015-03-25 | 西安伯龙高铁电气有限公司 | Train Insulation Inspection System |
-
2015
- 2015-05-18 CN CN201510249886.8A patent/CN104849631B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050258933A1 (en) * | 2004-05-20 | 2005-11-24 | Von Duprin, Inc | Electronic security system |
| CN201440161U (en) * | 2009-07-28 | 2010-04-21 | 中国北车集团大同电力机车有限责任公司 | Locomotive top insulation detection equipment for locomotive |
| CN202256586U (en) * | 2011-09-29 | 2012-05-30 | 成都畅通机车车辆技术开发有限公司 | Dielectric withstand voltage testing device for roof of electric locomotive |
| CN203551726U (en) * | 2013-10-19 | 2014-04-16 | 山西智济电子科技有限公司 | Electric locomotive roof insulation detecting device |
| CN203551727U (en) * | 2013-10-19 | 2014-04-16 | 北京卓匠科创科技有限公司 | Electric locomotive roof insulation detector |
| CN204228897U (en) * | 2014-11-21 | 2015-03-25 | 西安伯龙高铁电气有限公司 | Train Insulation Inspection System |
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