CN104614627A - Portable DC leakage detection positioning device and detection positioning method - Google Patents
Portable DC leakage detection positioning device and detection positioning method Download PDFInfo
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- CN104614627A CN104614627A CN201410795040.XA CN201410795040A CN104614627A CN 104614627 A CN104614627 A CN 104614627A CN 201410795040 A CN201410795040 A CN 201410795040A CN 104614627 A CN104614627 A CN 104614627A
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Abstract
The invention discloses a portable DC leakage detection positioning device and a detection positioning method, the portable DC leakage detection positioning device is composed of a handheld terminal and a main module device, the handheld terminal is connected with the main module device through the wireless network for having communication through a wireless communication module; the electric current variable quantity delta I and the voltage variable quantity delta U can be obtained according to the variation tendency of the electric current value at the opening and closing time of the switching unit and the variation tendency of the BUS positive electrode and BUS positive electrode to the ground voltage from the upper side to the lower side during the opening and closing process of the switching unit, the electric current variable quantity delta I and the voltage variable quantity delta U are guided to the microprocessor module of the handheld terminal through the wireless communication module 14 and the wireless communication module and calculated and processed by the embedded software according to the ohm law to obtain the ground equivalent electric leakage resistance R+ and R- of the positive end and negative end of the device.
Description
Technical field
The present invention relates to a kind of electric detective technology, refer specifically to a kind of movable DC detection of electrical leakage positioning equipment and detection and location method.
Background technology
Along with the rapidly universal of computer network and IDC(data center) fast development of business, based on 240V, the plurality of advantages of the different brackets straight-flow systems such as 336V, straight-flow system is electric power at home and abroad, the unit such as communication and railway machine room is widely applied, due to the major failure that earth fault is straight-flow system, the great attention of people has been caused in the middle of practical application, although patent 2013100210043 proposes a kind of direct current electric leakage detection circuit, the bridge rectifier circuit consisted of four diodes of sampling unit carries out disposable detection, when detection only has the leakage current of several milliamperes of straight-flow systems, because of the impact of the restriction of bridge rectifier circuit itself and the building environment of outside electromagnetic interference and complexity, larger metrical error can be produced, accurately can not locate electric leakage position, immediately to safeguard, avoid causing unnecessary equipment and personal safety.
Summary of the invention
Technical matters to be solved by this invention is to provide and can detects straight-flow system electric leakage fast, can accurately positioning DC system to leak electricity the movable DC detection of electrical leakage positioning equipment of position and detection and location method again.
Movable DC detection of electrical leakage positioning equipment provided by the invention, be made up of manual terminal and primary module device, described manual terminal is connected by wireless network with primary module device, carries out communication by wireless communication module.
Described manual terminal is made up of microprocessor module, terminal apparatus battery, voltage acquisition module, terminating machine wireless communication module, display module, accurate magnetic induction binding clip, memory module, alarm and embedded software, and described battery is that manual terminal 1 is powered; Described voltage acquisition module is electrically connected with the data message input end of microprocessor module; Described accurate magnetic induction binding clip, memory module, embedded software and wireless communication module are two-way with microprocessor module to be respectively electrically connected; Described display module is electrically connected with the display translation end of microprocessor module; Described alarm is electrically connected with the warning output terminal of microprocessor module.
Described primary module is made up of primary module battery, primary module voltage acquisition module, switching control module and primary module wireless communication module, and described primary module battery is that primary module is powered; Described primary module voltage acquisition module, switching control module are electrically connected with primary module wireless communication module is two-way.
The both positive and negative polarity of described primary module is received on the BUS+ positive pole of system under test (SUT) and BUS-negative pole and ground wire respectively, again the accurate magnetic induction binding clip of handheld terminal 1 is held tested position, utilize the disconnection of switching unit and closed time current value variation tendency and to disconnect and BUS+ positive pole in closure state process and BUS-negative pole voltage-to-ground variation tendency from top to bottom obtain the variable quantity △ I of electric current and the variable quantity △ U of voltage at switching unit, then the variable quantity △ U of the variable quantity △ I of electric current and voltage is imported in the microprocessor module of manual terminal by wireless communication module 14 and wireless communication module, the equivalent over the ground leak resistance R+ and R-of equipment under test positive and negative terminal is obtained according to Ohm law computing through embedded software.If the variance values of the equivalent over the ground leak resistance R+ and R-after switching unit disconnects and after closing is between the mother of 0-1 Europe, detected DC equipment is with regard to leakproof, and microprocessor module purport makes display module be presented on the display screen of handheld terminal by the comparison value of mensuration; If after switching unit disconnects and closed after the variance values of equivalent over the ground leak resistance R+ and R-female more than 1 Europe, the just electric leakage of detected DC equipment, at this moment microprocessor module purport makes the alarm sound that gives the alarm report to the police.When DC leakage checkout equipment detects equipment leakage, send alarm, handheld terminal demonstrates the Leaked Current of Line to Ground resistance value of equipment under test simultaneously, and utilize accurate induction binding clip fast finding and fault point, test data is recorded in storage chip to be automatically convenient to check, be not limited to 30M distance range and carry out communication and control by the data between wireless communication module and primary module comprising, thus effectively ensured the safety of electric leakage equipment and testing staff, the normal work of electric leakage equipment is not affected yet, and carry out shop front identification by the operation interface of embedded software, data record analysis and configuration, practical existing one pole electric leakage, the complete precision measurement of bipolar balance electric leakage and non-equilibrium electric leakage is distinguished.
The profitable effect of the present invention is instant detection and the drain conditions of positioning DC checkout equipment and electric leakage particular location, so that maintenance personal's rapid-maintenance, effectively eliminates the machine room fire and personnel casualty accidents that cause because of electric leakage.
accompanying drawing illustrates:
Below in conjunction with accompanying drawing, the present invention is further illustrated
:
Fig. 1 is design sketch of the present invention.
Fig. 2 is the structural drawing of manual terminal of the present invention.
Fig. 3 is primary module structure drawing of device of the present invention.
Fig. 4 is the equivalent circuit diagram of invention.
Fig. 5 is overhaul flow chart of the present invention.
embodiment:
As shown in Figure 1, movable DC detection of electrical leakage positioning equipment provided by the invention, is made up of manual terminal 1 and primary module device 2, and described manual terminal 1 is connected by wireless network with primary module device 2, carries out communication by wireless communication module.
As shown in Figure 2, described manual terminal 1 is made up of microprocessor module 11, terminal apparatus battery 12, voltage acquisition module 13, terminating machine wireless communication module 14, display module 15, accurate magnetic induction binding clip 16, memory module 17, alarm 18 and embedded software 19, and described battery is that manual terminal 1 is powered; Described voltage acquisition module 13 is electrically connected with the data message input end of microprocessor module 11; Described accurate magnetic induction binding clip 16, memory module 17, embedded software 12 and wireless communication module 14 are electrically connected with microprocessor module 11 is two-way respectively; Described display module 15 is electrically connected with the display translation end of microprocessor module 11; Described alarm 18 is electrically connected with the warning output terminal of microprocessor module 11.
As shown in Figure 3, described primary module 2 is made up of primary module battery 21, primary module voltage acquisition module 22, switching control module 23 and primary module wireless communication module 24, and described primary module battery 21 is powered for primary module 2; Described primary module voltage acquisition module 22, switching control module 23 are electrically connected with primary module wireless communication module 24 is two-way.
As Fig. 2, shown in 4 and 5, the both positive and negative polarity of described primary module 2 is received on the BUS+ positive pole of system under test (SUT) and BUS-negative pole and ground wire respectively, again the accurate magnetic induction binding clip 16 of handheld terminal 1 is held tested position, utilize the disconnection of switching unit and closed time current value variation tendency and to disconnect and BUS+ positive pole in closure state process and BUS-negative pole voltage-to-ground variation tendency from top to bottom obtain the variable quantity △ I of electric current and the variable quantity △ U of voltage at switching unit, then the variable quantity △ U of the variable quantity △ I of electric current and voltage is imported in the microprocessor module 11 of manual terminal 1 by wireless communication module 14 and wireless communication module 24, through embedded software 19 according to Ohm law
computing obtains the equivalent over the ground leak resistance R+ and R-of equipment under test positive and negative terminal, if the variance values of the equivalent over the ground leak resistance R+ and R-after switching unit disconnects and after closing is between the mother of 0-1 Europe, detected DC equipment is with regard to leakproof, and microprocessor module 11 purport makes display module 15 be presented on the display screen of handheld terminal 1 by the comparison value of mensuration, if after switching unit disconnects and closed after the variance values of equivalent over the ground leak resistance R+ and R-female more than 1 Europe, the just electric leakage of detected DC equipment, at this moment microprocessor module 11 purport makes the alarm sound that gives the alarm report to the police.When DC leakage checkout equipment detects equipment leakage, send alarm, handheld terminal demonstrates the Leaked Current of Line to Ground resistance value of equipment under test simultaneously, and utilize accurate induction binding clip fast finding and fault point, test data is recorded in storage chip to be automatically convenient to check, be not limited to 30M distance range and carry out communication and control by the data between wireless communication module and primary module comprising, thus effectively ensured the safety of electric leakage equipment and testing staff, the normal work of electric leakage equipment is not affected yet, and carry out shop front identification by the operation interface of embedded software, data record analysis and configuration, practical existing one pole electric leakage, the complete precision measurement of bipolar balance electric leakage and non-equilibrium electric leakage is distinguished.
Claims (4)
1. a movable DC detection of electrical leakage positioning equipment, it is characterized in that being made up of manual terminal and primary module device, described manual terminal is connected by wireless network with primary module device, carries out communication by wireless communication module.
2. a kind of movable DC detection of electrical leakage positioning equipment according to claim 1, it is characterized in that described manual terminal is made up of microprocessor module, terminal apparatus battery, voltage acquisition module, terminating machine wireless communication module, display module, accurate magnetic induction binding clip, memory module, alarm and embedded software, described battery is that manual terminal 1 is powered; Described voltage acquisition module is electrically connected with the data message input end of microprocessor module; Described accurate magnetic induction binding clip, memory module, embedded software and wireless communication module are two-way with microprocessor module to be respectively electrically connected; Described display module is electrically connected with the display translation end of microprocessor module; Described alarm is electrically connected with the warning output terminal of microprocessor module.
3. a kind of movable DC detection of electrical leakage positioning equipment according to claim 1, it is characterized in that described primary module is made up of primary module battery, primary module voltage acquisition module, switching control module and primary module wireless communication module, described primary module battery is that primary module is powered; Described primary module voltage acquisition module, switching control module are electrically connected with primary module wireless communication module is two-way.
4. the detection method of a kind of movable DC detection of electrical leakage positioning equipment adopted according to claim 1, it is characterized in that the both positive and negative polarity of described primary module is received on the BUS+ positive pole of system under test (SUT) and BUS-negative pole and ground wire respectively, again the accurate magnetic induction binding clip 16 of handheld terminal 1 is held tested position, utilize the disconnection of switching unit and closed time current value variation tendency and to disconnect and BUS+ positive pole in closure state process and BUS-negative pole voltage-to-ground variation tendency from top to bottom obtain the variable quantity △ I of electric current and the variable quantity △ U of voltage at switching unit, then the variable quantity △ U of the variable quantity △ I of electric current and voltage is imported in the microprocessor module of manual terminal by wireless communication module 14 and wireless communication module, the equivalent over the ground leak resistance R+ and R-of equipment under test positive and negative terminal is calculated according to Ohm law through embedded software.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410795040.XA CN104614627A (en) | 2014-12-21 | 2014-12-21 | Portable DC leakage detection positioning device and detection positioning method |
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| CN201410795040.XA CN104614627A (en) | 2014-12-21 | 2014-12-21 | Portable DC leakage detection positioning device and detection positioning method |
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Cited By (3)
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| CN105242168A (en) * | 2015-10-29 | 2016-01-13 | 国网浙江省电力公司绍兴供电公司 | Split type leakage current acquisition system |
| CN105467194A (en) * | 2016-01-06 | 2016-04-06 | 苏州华电电气股份有限公司 | Handset for measuring current |
| CN106124999A (en) * | 2016-08-11 | 2016-11-16 | 深圳市柏特瑞电子有限公司 | The method and apparatus of a certain battery leakage in a kind of on-line checking accumulator battery |
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Application publication date: 20150513 |