CN110187217A - Connector for current online detection and active end thereof - Google Patents
Connector for current online detection and active end thereof Download PDFInfo
- Publication number
- CN110187217A CN110187217A CN201811457741.7A CN201811457741A CN110187217A CN 110187217 A CN110187217 A CN 110187217A CN 201811457741 A CN201811457741 A CN 201811457741A CN 110187217 A CN110187217 A CN 110187217A
- Authority
- CN
- China
- Prior art keywords
- source
- current
- connector
- circuit board
- electric current
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/20—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/68—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board
- G01R31/69—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board of terminals at the end of a cable or a wire harness; of plugs; of sockets, e.g. wall sockets or power sockets in appliances
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention relates to a connector for current online detection and an active end thereof, belonging to the field of connector performance measurement. According to the invention, the current of the active end signal contact element is detected by the magnetic sheet collecting sensor, and the current is sent to the current signal input end of the current detection circuit, so that the on-line detection of the working current of the connector is realized, the integration of the current detection device in the connector is realized by the active end integrated circuit board and the magnetic sheet collecting sensor, the integrated active end and the connector are relatively small in size, and the external structure size of the existing plug and socket is not required to be changed.
Description
Technical field
The invention belongs to connector performance fields of measurement, and in particular to the connector of a kind of electric current on-line checking and its active
End.
Background technique
Currently, its internal state of traditional passive connector is in unknown state for external system, it can not be to it
Carry out effective monitoring, and connector be used as system signal interconnecting interface, once fail will cause calamity to entire external system
High current connector in consequence, such as the system cores equipment such as be generally used for generator, mine, the master as energy source connect
Mouthful, once break down suddenly it is light if cause equipment downtime, it is heavy then whole system is caused to paralyse, and then the safety that initiation is great
Accident.In order to realize the failure predication and health control of whole system rank, connector internal state must be just realized first
Visualization carries out real-time monitoring to its critical eigenvalue.
According to statistics, high current connector failure or phenomenon of the failure in overload fault accounted for 70% or more, there is also old
Change the failures such as failure and contact poor contact.Overload fault is usually because caused by system short-circuit or long-term overload operation
The operating current that system short trouble will cause connector is flown up, therefore can pass through the working current value self-test to connector
Whether overload fault occurs to screen.
However, the operating current on-line checking of connector is limited by two conditions: first, connector inner space is narrow
It is small；Second, measuring cell cannot change connector internal state and performance.
Currently, common current measuring method is method measured directly, i.e., for the operating current detection for realizing connector
Contact in plug or socket is interrupted, introduces knitting contact, contact in knitting contact and plug/socket it
Between seal in sampling resistor or integrated electric flow sensor chip to measure, this carries out the existing contact piece structure of connector
Very big change can cause very big uncertain influence to connector performance, and the sampling resistor volume sealed in is big, can not be even
Device is connect to be internally integrated.Although the indirect measurement of the operating current of connector, but volume may be implemented in conventional Hall current sensor
It is still larger, and be not easy to be integrated in inside connector.
Summary of the invention
The object of the present invention is to provide a kind of connector of electric current on-line checking and its there is source, for solving due to detection
The current detection means volume of connector operating current is big, cause inside connector can not integrated current detection device, thus nothing
The problem on line detection of method realization connector operating current.
In order to solve the above technical problems, the present invention propose a kind of connector of electric current on-line checking have source, have source
It is built-in with circuit board, there is current detection circuit on the circuit board, the current detection circuit has current signal input；
It is described to there is source to be built-in with for detecting the current sensor for flowing through active end signal contact electric current, the electric current
Sensor connects the current signal input；The current sensor is collection magnetic sheet sensor, is integrated on the circuit board.
In order to solve the above technical problems, the present invention also proposes a kind of connector of electric current on-line checking, including dead terminal and
It is above-mentioned to have source.
Connector of the invention and its there is source, there is the electric current of source signal contact by collection magnetic sheet sensor detection
(i.e. the operating current of connector), and the electric current is sent to the current signal input of current detection circuit, realize connection
The on-line checking of device operating current, and the circuit board sum aggregate magnetic sheet sensor by there is source integrated realizes current detection means
Integrated inside connector, the volume for having source and connector after integrating is relatively small, does not need to existing plug
Any change is carried out with the external structure size of socket.In addition, connector of the invention and its having work of the source to connector
Performance will not adversely affect, and be very suitable to industrialization production.
Foregoing circuit plate is rigid printed board, prevents deformation from the circuit on circuit board being caused to damage, and influences connector work
The measurement of electric current.
The extending direction of foregoing circuit plate is consistent with there is the extending direction of source signal contact, to guarantee collection magnetic sheet sensing
Detection effect of the device to connector operating current.
It is above-mentioned to there is source to be additionally provided with shielding cylinder, shielding cylinder be threaded through it is corresponding have on source signal contact, be fixed on
On the circuit board, for shielding external magnetic field, collection magnetic sheet sensor is improved to the detection effect of connector operating current.
Further, also there is communication interface, communication interface is connected with communication interface contact, for by logical on circuit board
Letter interface, communication interface contact are communicated with host computer.Meanwhile also there is power interface on circuit board, power port connects
It is connected to power interface contact, for connecting power supply by power interface contact, provides work electricity consumption for circuit board.
Detailed description of the invention
Fig. 1 is connector construction schematic diagram of the invention；
Fig. 2 is the SIP encapsulation schematic diagram of Active control chip and amplifier chip in connector of the invention；
Fig. 3 is the mechanical construction drawing of connector of the invention；
The label declaration of attached drawing is as follows:
1-dead terminal signal contacting piece, 2-passive end housing, 3-dead terminal insulators, 4-dead terminal printed boards, 5-
Dead terminal auxiliary contact, 6-active end housing, 7-have source front end insulator, and 8-have source auxiliary contact, 9-shapes
State indicator light, 10-elastic slices, 11-Active control chips, 12-have source printed board, and 13-current sensors, 14-have source
Rear end insulator, 15-power source communications interfaces, 16-temperature sensors, 17-have source signal contact, 18-shielding cylinders.
Specific embodiment
A specific embodiment of the invention is further described with reference to the accompanying drawing.
Connector embodiment:
Connector as shown in Figure 1 includes source and dead terminal, and having source is connector body, and dead terminal is connection
Device plug.This has source to include source shell 6, have source front end insulator 7, have source rear end insulator 14, have source letter
Number contact 17 has source auxiliary contact 8 and has source printed board 12, before having source auxiliary contact 8 to be fixed on source
It holds on insulator 7, there is source auxiliary contact 8 to be connected in source printed board 12 in the form of looper.
Have and integrates arrangement Active control chip 11, status indicator lamp 9, current sensor 13, temperature in source printed board 12
Sensor 16 and contact resistance detection circuit, the contact resistance detection circuit include current detection circuit and voltage detecting circuit,
Wherein, current detection circuit has current signal input, and voltage detecting circuit has active terminal voltage signal input terminal and nothing
Source voltage terminal signal input part.Active control chip 11 is separately connected status indicator lamp 9, temperature sensor 16, and Active control
Chip 11 connects current sensor 13 by the current signal input of current detection circuit, and current sensor 13 is used for detection stream
The electric current of source signal contact 17 is crossed, and the electric current for having source signal contact 17 is transmitted to Active control chip 11,
Realize the detection of connector operating current.
Current sensor 13 in the present embodiment is to collect the magnetic sheet sensor (integrated chip with parallel magnetic field measurement function
Formula sensor), it has been arranged in source printed board 12, has had the extending direction of source printed board 12 and have source signal contact 17
Extending direction it is consistent.The collection magnetic sheet sensor be able to detect be parallel to the collection magnetic sheet sensor have source signal contact 17
Horizontal magnetic field, it is insensitive to external vertical magnetic field, obtain the electric current of source signal contact 17, i.e. the work electricity of connector
Stream.The model of above-mentioned collection magnetic sheet sensor is preferably the MLX91208 of Melexis company, and measurement current maxima is reachable
1000A。
There is source to be additionally provided with shielding cylinder 18, shielding cylinder 18 be threaded through it is corresponding have on source signal contact 17, it is fixed
On having source printed board 12.The shielding cylinder removes the above-mentioned level for having source signal contact 17 for shielding external magnetic field
Other magnetic fields outside magnetic field prevent the operating current of interfering conductor from detecting.
In the mechanical structure of connector as shown in Figure 3, source letter is surrounded with by placing above current sensor 13
The shielding cylinder 18 of number contact 17, makes 13 top magnetic field of current sensor be parallel to current sensor 13, and shield external magnetic field pair
The influence of current sensor 13 further increases the accuracy of magnetic-field measurement, eventually by the corresponding relationship between magnetic field and electric current,
Connector operating current (electric current for having source signal contact 17) is obtained, the non-of connector operating current is connect to realize
Touching measurement.
To realize the voltage measurement for having source signal contact 17, there is source signal contact 17 to be connected with elastic slice 10, bullet
Piece 10 connects the active terminal voltage signal input terminal, which passes sequentially through elastic slice 10 and have source voltage terminal letter
Number input terminal collects the voltage of source signal contact 17, and the voltage for having source signal contact 17 is sent to active
Control chip 11.
For the voltage measurement for realizing dead terminal signal contacting piece 1, dead terminal includes that passive end housing 2, passive end signal connect
Contact element 1, dead terminal insulator 3, dead terminal printed board 4 and dead terminal auxiliary contact 5, dead terminal signal contacting piece 1 pass through wall
Formula grommet, dead terminal insulator 3, dead terminal printed board 4 and interface grommet are fixed, 5 He of dead terminal auxiliary contact
Dead terminal printed board 4 is fixed on dead terminal insulator 3 and interface grommet.
4 one end of dead terminal printed board is conductively connected dead terminal signal contacting piece 1, and the other end is conductively connected dead terminal auxiliary and connects
Contact element 5, with the deposited copper wire of connected with passive end signal contact 1 and dead terminal auxiliary contact 5 in dead terminal printed board 4.Together
When, it is above-mentioned to there is source to be additionally provided with source auxiliary contact 8, there is the input of 8 connected with passive terminal voltage signal of source auxiliary contact
End, the purpose for being provided with source auxiliary contact 8 and dead terminal auxiliary contact 5 is, when there is source to be assemblied in dead terminal
When together, there are source auxiliary contact 8 and dead terminal auxiliary contact 5 also to link together, make dead terminal signal contacting piece 1
Voltage successively passes through dead terminal printed board 4, dead terminal auxiliary contact 5, has source auxiliary contact 8 to be transmitted to dead terminal voltage
Signal input part, finally, the voltage of dead terminal signal contacting piece 1 are collected by contact resistance detection circuit and are sent to active control
Coremaking piece 11.
Active control chip 11 is according to the voltage for having source signal contact 17 of acquisition, dead terminal signal contacting piece 1
Voltage calculates the pressure difference (i.e. the end voltage of contact resistance) between two voltages, according to the work of obtained pressure difference and connector
Make the resistance value that electric current (electric current for having source signal contact 17) calculates contact resistance, realizes that the resistance value of contact resistance is supervised in real time
It surveys.
Temperature sensor 16 in the present embodiment has been welded in source printed board 12, which can be temperature-sensitive
The common temperature transducer such as resistance, platinum resistance or infrared temperature sensor.11 temperature collection sensor 16 of Active control chip
Temperature signal, realize connector internal operating temperature real-time reading.
In order to reduce connector volume, the present embodiment selects the higher chip of small package integrated level as far as possible, and to active
Circuit further decreases volume entirely through SIP encapsulation, and SIP encapsulation is transported as shown in Fig. 2, be also packaged with amplifier chip simultaneously
Put the current signal detection circuit and above-mentioned temperature signal that chip includes contact resistance detection circuit, the acquisition of current sensor 13
Detection circuit, each detection circuit are sent to Active control chip 11, and the Active control chip in Fig. 2 includes MCU, and MCU passes through
Protocol chip and host computer carry out communication interaction.The completion of Active control chip 11 has 17 He of source signal contact to socket end
The dead terminal signal contacting piece 1 of plug end plugs together the sampling of rear both end voltage signal, the current signal that current sensor 13 acquires
Sampling and the sampling of above-mentioned temperature signal, then the enhanced processing Jing Guo amplifier chip and A/D conversion respectively, to be connect
Voltage value (i.e. the end voltage of contact resistance), the operating current, operating temperature at contact element both ends, according to the voltage value at contact both ends
The resistance value of contact resistance is calculated with operating current, and these acquisitions and calculating data are stored, and is consulted after convenient.
Power source communications interface 15 includes power interface and communication interface, and has been connected to the structure type of looper contact
In source printed board 12, there can also be the connection of source printed board 12 using the structure types such as lead, fastener are same.
Power source communications interface 15 meets known general connecting interface standard, for example, RS485, RS232, CAN, IO, USB
And Ethernet interface.Power source communications interface 15 also connects the operating temperature value, working current value, contact resistance value that coding is completed
It connects the current working condition of device and is transmitted to remote control terminal, realize real time monitoring and fault detection to connector parameters.Have
It is same to obtained connector real-time status value (including operating temperature value, working current value, contact resistance value) that source controls chip 11
Preset fault threshold is compared, when Active control chip 11 judges that connector is in malfunction, then driven connector
Status indicator lamp 9 (i.e. LED light in Fig. 2) redden color and flash alarm, then data are encoded, are passed through
Corresponding protocol chip is transferred to host computer.The LED light is placed in the fluting of active end housing 6, is put in LED light
It is equipped with glass resin, for protecting to LED light.
The low-voltage dc power supply of the power supply selection 5V of the present embodiment, is accessed by power source communications interface 15 from outside, to have
Source controls chip 11 and current sensor 13 is powered.As other embodiments, power supply also may be selected button cell, be mounted on
In source printed board 12, it may not necessarily only retain the communication interface in power source communications interface 15 from external electricity in this way.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.For example, current detection circuit of the connector of the present embodiment by setting
The measurement that connector operating current is realized with current sensor realizes the end voltage of contact resistance by voltage detecting circuit
Detection.As other embodiments, it can according to need setting associated components, if only needing to detect that the operating current of connector,
Without detecting other parameters, then current detection circuit sum aggregate magnetic sheet sensor is only set on having source printed board.Again
Such as, the present embodiment has source to can be used as connector plug, dead terminal as connector body, with specific reference to practical application feelings
Condition setting.
It for another example, is two due to there is the dead terminal signal contacting piece of source signal contact and dead terminal that has of source,
Therefore, there can be source signal contact to one of them, carry out the voltage detecting for having source signal contact, also can detecte
Two have the voltage of source signal contact；Similarly, passive end signal can be carried out to one of dead terminal signal contacting piece
The voltage detecting of contact also can detecte the voltage of two dead terminal signal contacting pieces, as shown in Fig. 3 to two nothings
Source/there is the electric current of source signal contact to be detected.
For another example, the present embodiment is used for connected with passive end signal contact and dead terminal using the deposited copper wire of dead terminal printed board
Auxiliary contact, as other substitute modes, dead terminal signal contacting piece and dead terminal auxiliary contact can also by elastic slice or
The structures such as probe are connected；For another example, this implementation is connected with source voltage terminal signal input part by elastic slice and has source signal contact,
It, can be with as other substitute modes for the voltage for having source signal contact to be led to active terminal voltage signal input terminal
By on having source printed board (preferably rigid printed board can also use other circuit boards, such as flexible printed circuit certainly)
It arranges and applies copper wire, be connected separately with source voltage terminal signal input part and have source signal contact, phase same-action can be reached.
For another example, it does in magnetic field current sensor incuded for the magnetic field for avoiding the circuit in source printed board from generating
It disturbs, settable two have source printed board, respectively the first rigid printed board and the second rigid printed board, the second rigid printed board
Upper setting collects magnetic sheet sensor, other devices in addition to collecting magnetic sheet sensor, such as Active control is arranged on the first rigid printed board
Chip, status indicator lamp, temperature sensor and contact resistance detection circuit etc., the extending direction of the first rigid printed board with it is active
The extending direction of end signal contact is vertical, the extending direction of the second rigid printed board and the extension side for having source signal contact
To consistent, the current detecting of source signal contact is realized by the second rigid printed board, is passed through the second rigid printed board and is realized.
Therefore, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should all wrap
It is contained within scope of the presently claimed invention.
There is source embodiment:
What the present embodiment proposed a kind of connector of electric current on-line checking has source, this has the i.e. above-mentioned connector of source to implement
There is source in example, and there is source both to can be set in plug in the present embodiment, also can be set in socket.In addition,
It is provided with the connector operating current for having source to detect of the present embodiment, the short trouble that can be also used for monitoring system is sentenced
Not.
Claims (10)
1. a kind of connector of electric current on-line checking, which is characterized in that it include source and dead terminal, it is described to there is source to be built-in with
Circuit board, has current detection circuit on the circuit board, and the current detection circuit has current signal input；
It is described to there is source to be built-in with for detecting the current sensor for flowing through active end signal contact electric current, the current sense
Device connects the current signal input；The current sensor is collection magnetic sheet sensor, is integrated on the circuit board.
2. the connector of electric current on-line checking according to claim 1, which is characterized in that the circuit board is rigidity printing
Plate.
3. the connector of electric current on-line checking according to claim 1, which is characterized in that the extending direction of the circuit board
It is consistent with the extending direction for having source signal contact.
4. the connector of electric current on-line checking according to claim 1, which is characterized in that described to there is source to be additionally provided with screen
Cover cylinder, shielding cylinder be threaded through it is corresponding have on source signal contact, be fixed on the circuit board.
5. the connector of electric current on-line checking according to claim 1, which is characterized in that also there is communication to connect on circuit board
Mouthful, the communication interface is connected with communication interface contact.
6. the connector of electric current on-line checking according to claim 1, which is characterized in that also connect with power supply on circuit board
Mouthful, the power interface is connected with power interface contact.
7. a kind of connector of electric current on-line checking has source, which is characterized in that there is source to be built-in with circuit board, the circuit
There is current detection circuit, the current detection circuit has current signal input on plate；
It is described to there is source to be built-in with for detecting the current sensor for flowing through active end signal contact electric current, the current sense
Device connects the current signal input；The current sensor is collection magnetic sheet sensor, is integrated on the circuit board.
8. the connector of electric current on-line checking according to claim 7 has source, which is characterized in that the circuit board is
Rigid printed board.
9. the connector of electric current on-line checking according to claim 7 has source, which is characterized in that the circuit board
Extending direction is consistent with the extending direction for having source signal contact.
10. the connector of electric current on-line checking according to claim 7 has source, which is characterized in that described to have source
Be additionally provided with shielding cylinder, shielding cylinder be threaded through it is corresponding have on source signal contact, be fixed on the circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811457741.7A CN110187217B (en) | 2018-11-30 | 2018-11-30 | Connector for current online detection and active end thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811457741.7A CN110187217B (en) | 2018-11-30 | 2018-11-30 | Connector for current online detection and active end thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110187217A true CN110187217A (en) | 2019-08-30 |
| CN110187217B CN110187217B (en) | 2022-05-13 |
Family
ID=67713570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811457741.7A Active CN110187217B (en) | 2018-11-30 | 2018-11-30 | Connector for current online detection and active end thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110187217B (en) |
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| CN206920498U (en) * | 2017-04-01 | 2018-01-23 | 苏州汇川联合动力系统有限公司 | A kind of discrete current sensor |
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| CN1460182A (en) * | 2001-03-30 | 2003-12-03 | 奥马萨瓦尔集团股份有限公司 | High-voltage insulated modular connection system with voltage and current detector |
| CN201199587Y (en) * | 2008-05-14 | 2009-02-25 | 詹彤 | Intelligent, energy-saving, environment protection automatic power socket |
| CN201477140U (en) * | 2009-05-25 | 2010-05-19 | 郭圭伟 | Socket current display and warning device |
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| US20160223596A1 (en) * | 2015-01-30 | 2016-08-04 | Lenovo Enterprise Solutions (Singapore) Pte. Ltd. | Inter-circuit board connector with current sensor |
| CN205882314U (en) * | 2016-07-19 | 2017-01-11 | 国网新疆电力公司电力科学研究院 | Integrated smart jack that observes and controls |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110187217B (en) | 2022-05-13 |
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