CN110190468B - Connector for on-line detection of contact resistance - Google Patents
Connector for on-line detection of contact resistance Download PDFInfo
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- CN110190468B CN110190468B CN201811457725.8A CN201811457725A CN110190468B CN 110190468 B CN110190468 B CN 110190468B CN 201811457725 A CN201811457725 A CN 201811457725A CN 110190468 B CN110190468 B CN 110190468B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6683—Structural association with built-in electrical component with built-in electronic circuit with built-in sensor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/717—Structural association with built-in electrical component with built-in light source
- H01R13/7175—Light emitting diodes (LEDs)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention relates to a connector for on-line detection of contact resistance, belonging to the field of connector performance measurement, comprising an active end and a passive end, wherein a circuit board is arranged in the active end, and a contact resistance detection circuit is arranged on the circuit board and is provided with a current signal input end, an active end voltage signal input end and a passive end voltage signal input end; the active end is provided with a source end auxiliary contact element, the passive end is provided with a passive end auxiliary contact element, a current sensor and a first conductive element are arranged in the active end, the current sensor is connected with a current signal input end, the first conductive element is connected with a source end voltage signal input end, a second conductive element is arranged in the passive end, one end of the second conductive element is in conductive connection with the passive end signal contact element, the other end of the second conductive element is in conductive connection with the passive end voltage signal input end, and the active end auxiliary contact element is connected with the passive end voltage signal. The electric connector disclosed by the invention is small in size, and can realize online detection of the voltage at two ends of the contact resistor.
Description
Technical Field
The invention belongs to the field of connector performance measurement, and particularly relates to a connector for online detection of contact resistance.
Background
At present, the internal state of a traditional passive connector is unknown relative to an external system, and the traditional passive connector cannot be effectively monitored, and the connector is used as a system signal interconnection interface, once the connector fails, disastrous results are caused to the whole external system, for example, a large-current connector which is usually used on a generator, a mine and other system key equipment is used as a main interface of an energy source, and once the connector suddenly fails, the equipment is shut down, and the whole system is paralyzed seriously, so that a serious safety accident is caused.
In order to achieve fault prediction and health management at the overall system level, visualization of the internal state of the connector must first be achieved, with real-time monitoring of its critical characteristic values. When the connector is plugged and unplugged and runs for a long time, the contact resistance value between the head contact piece and the seat contact piece can be changed due to abrasion, temperature pressure change and the like, and the value is directly related to the current state and the future service life of the connector. Therefore, the self-detection of the internal state of the connector can be realized by detecting the contact resistance value on line.
However, the on-line detection architecture is limited by two conditions: firstly, the inner space of the connector is narrow; second, the measuring element cannot change the internal state and performance of the connector.
The difficulty in designing an online detection structure under the above two constraints is:
how to detect the voltage across the contact resistance, in particular the voltage of the passive part.
2, how to detect the current of the contact resistance. The current measurement method commonly used at present is a direct measurement method, namely, a contact in a plug or a socket is broken, a wrong-needle contact is introduced, and a sampling resistor or an integrated current sensor is connected in series between the wrong-needle contact and the contact in the plug/socket for measurement. This greatly modifies the existing contact structure of the connector, which can have a significant uncertainty in the performance of the connector. Although the traditional Hall current sensor can realize indirect measurement of current, the volume is still large, and the traditional Hall current sensor is not easy to integrate in the connector.
Disclosure of Invention
The invention aims to provide a connector for detecting contact resistance on line, which is used for solving the problem of how to detect the voltage at two ends of the contact resistance.
In order to solve the technical problem, the invention provides a connector for online detection of contact resistance, which comprises the following solutions:
the circuit board is provided with a contact resistance detection circuit, and the contact resistance detection circuit is provided with a current signal input end, an active end voltage signal input end and a passive end voltage signal input end;
the active end is provided with a source end auxiliary contact element, the passive end is provided with a passive end auxiliary contact element, and the active end auxiliary contact element and the passive end auxiliary contact element are connected together when the active end and the passive end are assembled together;
a current sensor for detecting current flowing through the active terminal signal contact element is arranged in the active terminal, and the current sensor is connected with a current signal input terminal;
a first conductive element used for being conductively connected with a source end signal contact element is arranged in the active end, and the first conductive element is connected with an active end voltage signal input end;
a second conductive element is arranged in the passive end, one end of the second conductive element is conductively connected with the passive end signal contact element, and the other end of the second conductive element is conductively connected with the passive end auxiliary contact element; the active end auxiliary contact element is connected with the passive end voltage signal input end.
The first conductive element respectively connected with the active end voltage signal input end and the active end signal contact element is arranged in the active end of the electric connector, so that the voltage on-line detection of the active end signal contact element is realized; the voltage on-line detection of the passive end signal contact element is realized by arranging a second conductive element which is respectively connected with the passive end auxiliary contact element and the passive end signal contact element in the passive end of the electric connector. The electric connector disclosed by the invention is small in size, and can realize online detection of the voltage at two ends of the contact resistor.
In order to realize the voltage detection of the passive end signal contact element, the passive end is provided with a passive end printed board, the second conductive element is a conductive layer arranged on the passive end printed board, and the conductive layer is connected with the passive end signal contact element and the passive end auxiliary contact element in a distributed mode, namely, the voltage of the passive end auxiliary contact element passes through the conductive layer on the passive end printed board and then is finally collected by the circuit board through the passive end auxiliary contact element, the active end auxiliary contact element and the passive end voltage signal input end in sequence.
The first conductive element is a spring plate, and is respectively connected with a source end signal contact element and an active end voltage signal input end through the spring plate and used for transmitting the voltage of the active end signal contact element.
As another embodiment of the first conductive element, the circuit board is an active-side printed board, and the first conductive element is a conductive layer disposed on the active-side printed board, that is, the voltage of the active-side signal contact passes through the conductive layer on the active-side printed board and is collected by the circuit board through the active-side voltage signal input end.
The current sensor is a magnetic sheet collecting sensor and is arranged on a circuit board, and the extending direction of the circuit board is consistent with the extending direction of the active end signal contact piece. The magnetic sheet collecting sensor can detect a horizontal magnetic field parallel to an active end signal contact piece of the magnetic sheet collecting sensor to obtain the current of the active end signal contact piece, namely, the current detection of the contact resistance is realized.
The active end is also provided with a shielding cylinder, and the shielding cylinder is arranged on the corresponding active end signal contact element in a penetrating way and is fixed on the circuit board. The shielding cylinder is used for shielding other magnetic fields except the horizontal magnetic field of the active end signal contact element, and the accurate current detection of the contact resistance is realized.
The circuit board comprises a first rigid printed board and a second rigid printed board, wherein the extending direction of the first rigid printed board is vertical to the extending direction of the active end signal contact element, and the first rigid printed board is provided with a contact resistance detection circuit; the extending direction of the second rigid printed board is consistent with the extending direction of the active end signal contact element, and the second rigid printed board is provided with the magnetic collecting sheet sensor, namely, the current detection of the active end signal contact element is realized through the second rigid printed board, the voltage detection of the active end signal contact element is realized through the first rigid printed board, the current acquisition of the passive end signal contact element is realized, and the voltage acquisition of the passive end signal contact element is realized.
As a further improvement of the other alternative mode, the active end is further provided with a shielding cylinder, and the shielding cylinder is arranged on the corresponding active end signal contact element in a penetrating manner and fixed on the second rigid printed board so as to realize accurate current detection of the contact resistor.
Furthermore, the first rigid printed board and the second rigid printed board are fixedly connected through a flexible printed board so as to ensure the vertical arrangement of the first rigid printed board and the second rigid printed board.
In order to realize the measurement of the internal temperature of the connector, a temperature sensor is arranged on the active end printed board.
Drawings
FIG. 1 is a schematic view of the connector configuration of the present invention;
FIG. 2 is a schematic diagram of an SIP package of an active control chip and an operational amplifier chip in the connector of the present invention;
FIG. 3 is a mechanical block diagram of the connector of the present invention;
FIG. 4 is a schematic view of another connector configuration of the present invention;
the reference numerals of the drawings are explained below:
1-passive end signal contact element, 2-passive end shell, 3-passive end insulator, 4-passive end printed board, 5-passive end auxiliary contact element, 6-active end shell, 7-active end front end insulator, 8-active end auxiliary contact element, 9-status indicator lamp, 10-spring plate, 11-active control chip, 12-active end printed board, 13-current sensor, 14-active end rear end insulator, 15-power communication interface, 16-temperature sensor, 17-active end signal contact element, 18-shielding cylinder, 121-first rigid printed board, 122-second rigid printed board, 123-flexible printed board.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
The first embodiment of the connector:
the connector shown in fig. 1 includes an active end and a passive end, the active end being a connector receptacle and the passive end being a connector plug.
The active terminal comprises an active terminal shell 6, an active terminal front-end insulator 7, an active terminal rear-end insulator 14, an active terminal signal contact 17, an active terminal auxiliary contact 8 and an active terminal printed board 12, wherein the active terminal auxiliary contact 8 is fixed on the active terminal front-end insulator 7, and the active terminal auxiliary contact 8 is connected to the active terminal printed board 12 in a bent needle mode.
An active control chip 11, a state indicator lamp 9, a current sensor 13, a temperature sensor 16 and a contact resistance detection circuit are integrally arranged on the active end printed board 12, the active control chip 11 is respectively connected with the state indicator lamp 9 and the temperature sensor 16, the active control chip 11 is connected with the current sensor 13 through a current signal input end of the contact resistance detection circuit, and the current sensor 13 is used for detecting current flowing through an active end signal contact element 17 and transmitting the current of the active end signal contact element 17 to the active control chip 11.
The contact resistance detection circuit not only has a current signal input end, but also has an active end voltage signal input end and a passive end voltage signal input end. The active end signal contact element 17 is connected with a spring plate 10 (the spring plate is referred to as a first conductive element in the invention), the spring plate 10 is connected with the active end voltage signal input end, the contact resistance detection circuit sequentially collects the voltage of the active end signal contact element 17 through the spring plate 10 and the active end voltage signal input end, and sends the voltage of the active end signal contact element 17 to the active control chip 11.
The passive end comprises a passive end shell 2, a passive end signal contact element 1, a passive end insulator 3, a passive end printed board 4 and a passive end auxiliary contact element 5, wherein the passive end signal contact element 1 penetrates through a wall type wire sealing body, the passive end insulator 3, the passive end printed board 4 and an interface wire sealing body to be fixed, and the passive end auxiliary contact element 5 and the passive end printed board 4 are fixed on the passive end insulator 3 and the interface wire sealing body.
The passive printed board 4 has one end conductively connected to the passive signal contact 1 and the other end conductively connected to the passive auxiliary contact 5, and the passive printed board 4 has a conductive layer (generally a copper-clad wire) connecting the passive signal contact 1 and the passive auxiliary contact 5, and the conductive layer is referred to as a second conductive element in the present invention. Meanwhile, the active end is also provided with an active end auxiliary contact element 8, the active end auxiliary contact element 8 is connected with a passive end voltage signal input end, and the active end auxiliary contact element 8 and the passive end auxiliary contact element 5 are arranged, so that when the active end and the passive end are assembled together, the active end auxiliary contact element 8 and the passive end auxiliary contact element 5 are also connected together, the voltage of the passive end signal contact element 1 is transmitted to the passive end voltage signal input end through the passive end printed board 4, the passive end auxiliary contact element 5 and the active end auxiliary contact element 8 in sequence, and finally, the voltage of the passive end signal contact element 1 is collected by the contact resistance detection circuit and is sent to the active control chip 11.
The active control chip 11 calculates the voltage difference between the two voltages according to the collected voltage of the active end signal contact element 17 and the voltage of the passive end signal contact element 1, calculates the resistance value of the contact resistor according to the obtained voltage difference and the current of the active end signal contact element 17, and realizes the real-time monitoring of the resistance value of the contact resistor.
The current sensor 13 in this embodiment is a magnetic chip sensor (integrated chip sensor having a parallel magnetic field measurement function) and is arranged on the active-side printed board 12, and the extending direction of the active-side printed board 12 is the same as the extending direction of the active-side signal contact 17. The magnetic sheet collecting sensor can detect a horizontal magnetic field parallel to the active end signal contact piece 17 of the magnetic sheet collecting sensor, is insensitive to an external vertical magnetic field, and obtains the current of the active end signal contact piece 17, namely the current of the contact resistor. The magnetic collecting sheet sensor is preferably in a model of MLX91208 of Melexis, and the maximum value of the measuring current can reach 1000A.
The active end is also provided with a shielding cylinder 18, and the shielding cylinder 18 is arranged on the corresponding active end signal contact element 17 in a penetrating way and fixed on the active end printed board 12. The shield cylinder is used for shielding an external magnetic field, i.e., other magnetic fields than the horizontal magnetic field of the active-end signal contact 17, and preventing interference with current detection of the contact resistance.
In the mechanical structure of the connector shown in fig. 3, the shielding cylinder 18 surrounding the active-end signal contact 17 is placed above the current sensor 13, so that the magnetic field above the current sensor 13 is parallel to the current sensor 13, and the influence of the external magnetic field on the current sensor 13 is shielded, thereby further improving the accuracy of magnetic field measurement, and finally, the working current of the connector (i.e. the current of the active-end signal contact 17) is obtained through the corresponding relationship between the magnetic field and the current, thereby realizing the non-contact measurement of the working current of the connector.
The temperature sensor 16 in this embodiment is welded to the active-end printed board 12, and may be a thermistor, a platinum resistor, or a commonly used temperature sensor such as an infrared temperature sensor. The active control chip 11 collects temperature signals of the temperature sensor 16, and real-time reading of the internal working temperature of the connector is achieved.
In order to reduce the volume of the connector, in this embodiment, a chip with a smaller package and a higher integration level is selected as much as possible, and the volume of the whole active circuit is further reduced by SIP packaging, the SIP packaging is as shown in fig. 2, and an operational amplifier chip is packaged at the same time, the operational amplifier chip includes a contact resistance detection circuit, a current signal detection circuit acquired by a current sensor 13 and a detection circuit of the temperature signal, each detection circuit is transmitted to an active control chip 11, the active control chip in fig. 2 includes an MCU, and the MCU performs communication interaction with an upper computer through a protocol chip. The active control chip 11 completes sampling of voltage signals at two ends after the active end signal contact member 17 at the socket end and the passive end signal contact member 1 at the plug end are plugged, sampling of current signals collected by the current sensor 13 and sampling of the temperature signals, and then amplification processing and A/D conversion of the operational amplifier chip are respectively carried out, so that voltage values (namely terminal voltage of the contact resistor), working current and working temperature at two ends of the contact member are obtained, resistance values of the contact resistor are calculated according to the voltage values at two ends of the contact member and the working current, and the collected and calculated data are stored for being conveniently consulted later.
The power supply communication interface 15 is a power supply and communication interface and is connected to the active-end printed board 12 in the structural form of a bent pin contact, and the power supply communication interface 15 can also be connected with the active-end printed board 12 in the structural forms of a lead, a fastener and the like.
The power communication interface 15 conforms to known general connection interface standards, such as RS485, RS232, CAN, IO, USB, and ethernet interfaces. The power supply communication interface 15 transmits the encoded working temperature value, the encoded working current value, the encoded contact resistance value and the current working state of the connector to an upper computer of the remote control terminal, so that the real-time monitoring and the fault detection of each parameter of the connector are realized. The active control chip 11 compares the obtained real-time state value (including the working temperature value, the working current value and the contact resistance value) of the connector with a preset fault threshold value, and when the active control chip 11 judges that the connector is in a fault state, the active control chip drives the state indicator lamp 9 (namely, the LED indicator lamp in the figure 2) of the connector to turn red and flash for alarming, then codes data, and transmits the data to the upper computer through a corresponding protocol chip. The LED indicator lamp is placed in the groove of the active end shell 6, and glass resin is placed on the LED indicator lamp and used for protecting the LED indicator lamp.
The power supply of the embodiment selects a low-voltage direct-current power supply of 5V, is accessed from the outside through the power supply communication interface 15, and supplies power to the active control chip 11 and the current sensor 13. As another embodiment, the power source may also be a button cell, and is mounted on the active-end printed board 12, so that only the communication interface in the power source communication interface 15 is reserved without taking power from the outside.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and a person skilled in the art may make various modifications and changes, for example, the active terminal of the present embodiment may be used as a connector plug, and the passive terminal may be used as a connector socket, and the present invention is specifically configured according to the practical application; for another example, since the active-side signal contact element of the active side and the passive-side signal contact element of the passive side are both two, voltage detection of the active-side signal contact element can be performed on one of the active-side signal contact elements, and voltage of the two active-side signal contact elements can also be detected; similarly, voltage detection of the passive end signal contact may be performed on one of the passive end signal contacts, and voltages of the two passive end signal contacts may also be detected, as shown in fig. 3, current of both the passive/active end signal contacts is detected.
For another example, in this embodiment, the first conductive element is an elastic sheet, the second conductive element is a conductive layer of the passive printed board, and as another alternative, the first conductive element is a conductive layer arranged on the active printed board, and the second conductive element is an elastic sheet or a probe.
In addition, the current sensor in this embodiment is a magnetic flux concentration sensor, and as another embodiment, if a sufficiently large space is reserved in the active end of the connector, a hall current sensor may be used to detect the current of the active end signal contact. Therefore, any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Connector embodiment two:
the difference between this embodiment and the first connector embodiment is that, in this embodiment, the first conductive element is implemented by a printed board.
Specifically, the active-side printed board in the present embodiment is divided into a first rigid printed board 121, a second rigid printed board 122, and a flexible printed board 123, as shown in fig. 4. The current sensor 13 is disposed on the second rigid printed board 122, other circuit devices of the active-side printed board 12 in the first connector embodiment, such as the active control chip 11, the status indicator lamp 9, the temperature sensor 16, the contact resistance detection circuit, and the like, are disposed on the first rigid printed board 121, and the extending direction of the first rigid printed board 121 is perpendicular to the extending direction of the active-side signal contact 17, and the active-side signal contact 17 directly penetrates through the first rigid printed board 121, so that the conductive connection between the active-side signal contact 17 and the active-side voltage signal input end can be directly realized by using the conductive layer on the first rigid printed board 121, that is, the first conductive element is realized by using a printed board.
And the extending direction of the second rigid printed board 122 coincides with the extending direction of the active-side signal contact 17 in order to facilitate measurement of the magnetic field of the active-side signal contact 17 and easy mounting of the shield cylinder 18.
The first rigid printed board 121 and the second rigid printed board 122 are fixedly connected by a flexible printed board 123. The signal collected by the current sensor 13 is transmitted to the active control chip 11 through the conductive layers of the second rigid printed board 122, the flexible printed board 123, and the first rigid printed board 121.
The purpose of arranging the flexible printed board in the implementation mode is to ensure that the first rigid printed board and the second rigid printed board are perpendicular, so that a current sensor is not interfered by a magnetic field on the first rigid printed board, the current of the active end signal contact element is more accurately acquired, as other implementation modes, the flexible printed board is not required to be arranged, and the first rigid printed board and the second rigid printed board are ensured to be perpendicular relatively.
The connector of the embodiment realizes current detection of the source-end signal contact element through the second rigid printed board, voltage detection of the source-end signal contact element through the first rigid printed board, current acquisition of the passive-end signal contact element, voltage acquisition of the passive-end signal contact element, acquisition of the internal working temperature of the connector, and calculation of the contact resistance.
Claims (10)
1. The connector for the on-line detection of the contact resistance is characterized by comprising an active end and a passive end, wherein a circuit board is arranged in the active end, a contact resistance detection circuit is arranged on the circuit board, and the contact resistance detection circuit is provided with a current signal input end, an active end voltage signal input end and a passive end voltage signal input end;
the active end is provided with a source end auxiliary contact element, the passive end is provided with a passive end auxiliary contact element, and the active end auxiliary contact element and the passive end auxiliary contact element are connected together when the active end and the passive end are assembled together;
a current sensor for detecting current flowing through the active terminal signal contact element is arranged in the active terminal, and the current sensor is connected with the current signal input terminal;
a first conductive element used for being in conductive connection with the active terminal signal contact element is arranged in the active terminal, and the first conductive element is connected with the active terminal voltage signal input end;
a second conductive element is arranged in the passive end, one end of the second conductive element is conductively connected with the passive end signal contact element, and the other end of the second conductive element is conductively connected with the passive end auxiliary contact element; the active end auxiliary contact element is connected with the passive end voltage signal input end.
2. The connector for on-line detection of contact resistance according to claim 1, wherein the passive terminal is provided with a passive terminal printed board, and the second conductive element is a conductive layer disposed on the passive terminal printed board and connecting the passive terminal signal contact and the passive terminal auxiliary contact, respectively.
3. The connector for on-line detection of contact resistance according to claim 1, wherein the circuit board is an active-end printed board, and the first conductive element is a conductive layer disposed on the active-end printed board.
4. The connector for detecting the contact resistance online as recited in claim 1, wherein the first conductive element is a spring.
5. The connector for detecting contact resistance on line according to claim 1, wherein the current sensor is a magnetic concentrator sensor disposed on the circuit board, and the extending direction of the circuit board is the same as the extending direction of the active terminal signal contact.
6. The connector for on-line detection of contact resistance according to claim 5, wherein the active end is further provided with a shielding cylinder, and the shielding cylinder is inserted into the corresponding active end signal contact and fixed on the circuit board.
7. The connector for on-line detection of contact resistance according to claim 1, wherein the circuit board comprises a first rigid printed board, and an extending direction of the first rigid printed board is perpendicular to an extending direction of the active-side signal contact; the first rigid printed board has the contact resistance detection circuit;
the circuit board further comprises a second rigid printed board, and the extending direction of the second rigid printed board is consistent with the extending direction of the active end signal contact element; the current sensor is arranged on the second rigid printed board and is a magnetic sheet collecting sensor.
8. The connector for on-line detection of contact resistance according to claim 7, wherein the active terminal is further provided with a shielding cylinder, and the shielding cylinder is inserted into the corresponding active terminal signal contact and fixed on the second rigid printed board.
9. The connector for on-line detection of contact resistance according to claim 7, wherein the first rigid printed board and the second rigid printed board are fixedly connected by a flexible printed board.
10. The connector for on-line detection of contact resistance according to claim 3, wherein a temperature sensor for detecting the internal temperature of the connector is disposed on the active printed board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811457725.8A CN110190468B (en) | 2018-11-30 | 2018-11-30 | Connector for on-line detection of contact resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811457725.8A CN110190468B (en) | 2018-11-30 | 2018-11-30 | Connector for on-line detection of contact resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110190468A CN110190468A (en) | 2019-08-30 |
| CN110190468B true CN110190468B (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811457725.8A Active CN110190468B (en) | 2018-11-30 | 2018-11-30 | Connector for on-line detection of contact resistance |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110932038B (en) * | 2019-11-15 | 2021-07-16 | 中航光电科技股份有限公司 | Connector with plugging characteristic detection function |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10204259A1 (en) * | 2002-02-02 | 2003-08-07 | Edag Eng & Design Ag | Diagnostic plug e.g. for checking current input in motor vehicle, has two measurement contacts and is fitted with measurement resistor |
| CN101937021A (en) * | 2010-06-30 | 2011-01-05 | 上海华岭集成电路技术有限责任公司 | Online measurement method of contact resistance of probe |
| CN202008524U (en) * | 2011-03-24 | 2011-10-12 | 深圳可立克科技股份有限公司 | Charging connector contact resistance detector and charging post |
| CN104062323B (en) * | 2014-06-06 | 2016-06-01 | 西安理工大学 | A kind of method of on-line measurement contact resistance |
| CN106053949B (en) * | 2016-07-18 | 2019-05-17 | 广州兴森快捷电路科技有限公司 | A kind of test device and test method of hardware contact resistance |
| DE202017102652U1 (en) * | 2017-05-04 | 2017-05-26 | Albrecht Jung Gmbh & Co. Kg | Mains outlet |
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