CN105866611A - Antenna plugging state detection device - Google Patents
Antenna plugging state detection device Download PDFInfo
- Publication number
- CN105866611A CN105866611A CN201610274143.0A CN201610274143A CN105866611A CN 105866611 A CN105866611 A CN 105866611A CN 201610274143 A CN201610274143 A CN 201610274143A CN 105866611 A CN105866611 A CN 105866611A
- Authority
- CN
- China
- Prior art keywords
- radio frequency
- choke coil
- frequency connector
- state detection
- connector
- 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
- 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
- G01R31/58—Testing of lines, cables or conductors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold
Abstract
The embodiment of the invention discloses an antenna plugging state detection device, and belongs to the technical field of electronic circuits. The device comprises an external circuit, a local circuit and a first state detection module. The first state detection module accurately judges the antenna plugging state by detecting whether a radio frequency signal line is in low potential or not.
Description
Technical field
The embodiment of the present invention belongs to electronic circuit technology field, particularly relates to a kind of antenna inserting state detection dress
Put.
Background technology
At present, intelligent television is nearly all equipped with wireless device, such as WIFI network interface card, 2.4G radio-frequency module,
Bluetooth module etc..For raising radio transmission performance, these equipment draw antenna outside mostly needing to connect, and outer
That draws that antenna connects under any situation is the most intact, and performance plays conclusive effect.So, how
What whether detecting antenna connected accurately is intact, is of crucial importance.In realizing process of the present invention, invention
People finds that in prior art, at least there are the following problems: for the detecting of connection status of antenna, and prior art is also
Effective solution is not provided.
Summary of the invention
For above-mentioned technical problem, embodiments provide a kind of antenna inserting state detection device, with
Detect the inserting state of antenna accurately.
Embodiments provide a kind of antenna inserting state detection device, described antenna and radio frequency connector
First end electrical connection, the second end of described radio frequency connector is electrically connected with RF transceiver by rf signal line
Connecing, described detection device includes: external circuits, local circuit and the first state detection module；
Described external circuits includes the first choke coil, the first end of described first choke coil and described antenna and
First end electrical connection of described radio frequency connector, the second end ground connection of described first choke coil；
Described local circuit includes the second choke coil and the first pull-up resistor, the first of described first pull-up resistor
End electrically connects with dc source, and the second end electrically connects with the first end of described second choke coil, and described second grips
Second end of stream circle electrically connects with the second end of described radio frequency connector；
First state detection module, electrically connects with the second end of described radio frequency connector, be used for detecting described in penetrate
Frequently the current potential of the second end of connector.
Further, described local circuit also includes:
Luminous indicating module, is connected between described first pull-up resistor and described second choke coil.
Further, described luminous indicating module is light emitting diode, and the anode of described light emitting diode with
Second end of described first pull-up resistor connects, the negative electrode of described light emitting diode and described second choke coil
First end connects.
Further, also include that capacitance, described capacitance are connected on described rf signal line, and
Between the second end and the RF transceiver of described radio frequency connector.
Further, described local circuit also includes the 3rd choke coil and the second pull-up resistor, on described second
First end of pull-up resistor electrically connects with described dc source, and the second end is electric with the first end of described 3rd choke coil
Connecting, described second end of the 3rd choke coil electrically connects with the second end of described radio frequency connector.
Further, the first end of described radio frequency connector is public connector end, the of described radio frequency connector
Two ends are the female connectors end of described radio frequency connector, or, the first end of described radio frequency connector is female company
Connect device end, the public connector end that the second end is described radio frequency connector of described radio frequency connector.
Further, described first state detection module is baseband processing chip, and described baseband processing chip leads to
Cross universal input and output port to electrically connect with the second end of described radio frequency connector.
Further, also include:
Second state detection module, for obtaining the radio frequency characteristic parameter receiving signal on rf signal line, root
The connection status of described antenna is judged according to described radio frequency characteristic parameter.
Further, described radio frequency characteristic parameter includes received signal strength indicator and/or carrier-in-interference noise
Ratio.
Further, described second state detection module is arranged in described RF transceiver.
The antenna inserting state detection device that the embodiment of the present invention provides, due to when antenna grafting, network interface card end
The voltage of inserted terminal of radio frequency connector be pulled low, therefore whether be in low by the voltage of detection inserted terminal
Current potential, it is possible to judge the inserting state of described antenna accurately.
Accompanying drawing explanation
The detailed description that non-limiting example is made made with reference to the following drawings by reading, the present invention
Other features, objects and advantages will become more apparent upon:
Fig. 1 is the circuit structure diagram of the antenna inserting state detection device that first embodiment of the invention provides；
Fig. 2 is the circuit structure diagram of the antenna inserting state detection device that second embodiment of the invention provides；
Fig. 3 is the circuit structure diagram of the antenna inserting state detection device that third embodiment of the invention provides.
Detailed description of the invention
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings.It is understood that this
Specific embodiment described by place is used only for explaining the present invention, rather than limitation of the invention.The most also need
It is noted that for the ease of describing, accompanying drawing illustrate only part related to the present invention and not all knot
Structure.
First embodiment
Present embodiments provide a kind of technical scheme of antenna inserting state detection device.In this technical scheme,
Described antenna inserting state detection device includes: external circuits, local circuit and the first state detection module.
See Fig. 1, described antenna A to electrically connect with the first end J1 of radio frequency connector, described radio frequency connector
The second end J2 electrically connected with RF transceiver by rf signal line.
Described external circuits is connected with antenna A.Described external circuits includes: the first choke coil L1.Described
First end of one choke coil L1 is connected with described antenna, first end of the most described first choke coil L1 also with
First end J1 electrical connection of described radio frequency connector.The second end ground connection of described first choke coil L1.
Described local circuit includes: the first pull-up resistor R1 and the second choke coil L2.
Described first pull-up resistor R1 is in series with described second choke coil L2.Described first pull-up resistor R1
The first end be connected with dc source VCC.Second end of described first pull-up resistor R1 is gripped with described second
First end of stream circle L2 connects.Second end of described second choke coil L2 is connected with rf signal line.
First state detection module U1, electrically connects with the second end J2 of radio frequency connector, is used for detecting radio frequency
The current potential of the second end J2 of connector.
The effect of the branch road being made up of described first pull-up resistor R1 and described second choke coil L2 is,
In the case of the first end J1 and the second end J2 of the non-grafting of radio frequency connector, i.e. radio frequency connector is not connected with,
By the second end J2 of detection radio frequency connector, namely the DC potential of described rf signal line is drawn high.And work as institute
After stating radio frequency connector grafting, the DC potential of described rf signal line is pulled low.Owing to described radio frequency is believed
The DC potential of number line has such two state of value, and above-mentioned two state of value can connect according to described radio frequency
Whether device is directly determined by grafting.Therefore, it can utilize have with described rf signal line and be directly connected to
First state detection module U1 goes to detect the DC potential of described rf signal line, and is believed by described radio frequency
Whether the DC potential on number line is in the inserting state that electronegative potential judges that described radio frequency connects.
First end J1 of described radio frequency connector is public connector end, the second end J2 of described radio frequency connector
For the female connectors end of described radio frequency connector, or, the first end J1 of described radio frequency connector is female connection
Device end, the public connector end that the second end J2 is described radio frequency connector of described radio frequency connector.
Direct current on the rf signal line of the network interface card end that the present embodiment is directly connected to by detection and radio frequency connector
Current potential, it is achieved that the accurate judgement to antenna inserting state.
Second embodiment
Present embodiments provide the another kind of technical scheme of antenna inserting state detection device.In this technical scheme
In, described antenna inserting state detection device includes: external circuits, local circuit and the first state-detection mould
Block.
See Fig. 2, described antenna A to electrically connect with the first end J1 of radio frequency connector, described radio frequency connector
The second end J2 electrically connected with RF transceiver by rf signal line.
Described external circuits is connected with antenna A.Described antenna circuit includes: the first choke coil L1.Described
First end of one choke coil L1 is connected with described antenna, first end of the most described first choke coil L1 also with
First end J1 electrical connection of described radio frequency connector.The second end ground connection of described first choke coil L1.
Described local circuit includes: the first pull-up resistor R1, the second pull-up resistor R2, luminous indicating member
D1, the second choke coil L2 and the 3rd choke coil L3.
Described first pull-up resistor R1, described luminous indicating member D1 and described second choke coil L2 are mutual
Series connection.Concrete, described luminous indicating member D1 is light emitting diode.
More specifically, first end of described first pull-up resistor R1 electrically connects with dc source VCC, institute
The anode of the second end and described light emitting diode D1 of stating the first pull-up resistor R1 electrically connects, and described luminous two
The negative electrode of pole pipe D1 electrically connects with first end of described second choke coil L2.Further, described second choke coil
Second end of L2 electrically connects with described rf signal line.
Due to the grafting according to radio frequency connector whether, the DC potential of described rf signal line there will be high electricity
Position and two state of value of electronegative potential, so described light emitting diode D1 also can be according to described radio frequency connector
Whether grafting lights or extinguishes.Therefore, engineering staff is by observing described light emitting diode D1 intuitively
Light on and off i.e. would know that the inserting state of antenna.
Described second pull-up resistor R2 electrically connects with described 3rd choke coil L3.Concrete, on described second
First end of pull-up resistor R2 electrically connects with dc source VCC, the second end of described second pull-up resistor and institute
The first end stating the 3rd choke coil L3 electrically connects, and second end of described 3rd choke coil L3 and described radio frequency
Holding wire electrically connects.
The function of the branch road being made up of described second pull-up resistor R2 and described 3rd choke coil L3 is institute
The DC potential stating rf signal line is drawn high.
Identical with first embodiment of the invention, owing to the DC potential of rf signal line can according to described radio frequency even
Whether the grafting connecing device there are two state of value, therefore, uses and penetrates described in the first state detection module U1 detection
Frequently the second end J2 of connector, namely the DC potential of rf signal line.Direct current when described rf signal line
When current potential is electronegative potential, it is possible to judge the firmly grafting of described radio frequency connector.
First end J1 of described radio frequency connector is public connector end, the second end J2 of described radio frequency connector
For the female connectors end of described radio frequency connector, or, the first end J1 of described radio frequency connector is female connection
Device end, the public connector end that the second end J2 is described radio frequency connector of described radio frequency connector.
The present embodiment is by setting up light emitting diode on local circuit so that user can be observed by directly perceived
Whether lighting of light emitting diode judges antenna the most firmly grafting.
3rd embodiment
Present embodiments provide a kind of technical scheme of antenna inserting state detection device.In this technical scheme,
Described antenna inserting state detection device include: external circuits, local circuit, the first state detection module U1,
Second state detection module U2 and capacitance C1.
See Fig. 3, described antenna A to electrically connect with the first end J1 of radio frequency connector, described radio frequency connector
The second end J2 electrically connected with RF transceiver by rf signal line.
Described external circuits is connected with antenna A.Described external circuits includes: the first choke coil L1.Described
First end of one choke coil L1 is connected with described antenna, first end of the most described first choke coil L1 also with
First end J1 electrical connection of described radio frequency connector.The second end ground connection of described first choke coil L1.
Described local circuit includes: the first pull-up resistor R1, the second pull-up resistor R2, luminous indicating module
D1, the second choke coil L2, the 3rd choke coil L3.
Described luminous indicating module D1 can be specifically a light emitting diode, and it is connected on described first
Between pull-up resistor R1 and the second choke coil L2.
First end of described first pull-up resistor R1 electrically connects with dc source VCC, and its second end is with described
The anode electrical connection of light emitting diode D1.The negative electrode of described light emitting diode D2 and described second choke coil
First end of L2 connects, and second end of described second choke coil L2 is by rf signal line with described radio frequency even
The the second end J2 connecing device connects.
By propping up that described first pull-up resistor R1, light emitting diode D1 and described second choke coil L2 form
One end, road is connected with dc source VCC, and the other end connects described rf signal line.Therefore, connect when radio frequency
When two terminals of device do not connect, described rf signal line, namely the second end of described radio frequency connector
The DC potential of J2 is drawn high by dc source VCC, in high potential；And when two terminals of radio frequency connector
During connection, due to rf signal line, namely the second end J2 of described radio frequency connector is the most grounded, its direct current
Current potential is pulled low, in electronegative potential.The current potential being additionally, since rf signal line itself presents electronegative potential, described
There is voltage difference in light emitting diode D1 two ends, described light emitting diode D1 is lit.
First end of described second pull-up resistor R2 is connected with dc source VCC, and its second end is with described
First end of the second choke coil L3 connects, and second end of described second choke coil L3 is also by rf signal line
It is connected with the second end J2 of described radio frequency connector.
The effect of the branch road being made up of described second pull-up resistor R2, described second choke coil L3 is, will
The current potential of described rf signal line itself is drawn high.
Second end of described second choke coil L2 and second end of described 3rd choke coil L3 are also by every straight electricity
Hold C1 to be connected with RF transceiver.In described RF transceiver, it is built-in with the second state detection module U2.
Described second state detection module U2 is used for obtaining the radio frequency characteristic parameter receiving signal on rf signal line,
And the connection status of described antenna is judged according to described radio frequency characteristic parameter.
Described radio frequency characteristic parameter includes: received signal strength indicator and/or carrier-in-interference noise ratio.
As a example by received signal strength indicator, described second state detection module U2 can be that described reception is believed
The instruction of number intensity sets decision threshold, when the received signal strength indicator of radiofrequency signal is less than when setting threshold value,
May determine that the current not firmly grafting of antenna.
Second end of described second choke coil L2 and second end of described 3rd choke coil L3 also with the first state
Detection module U1 connects.Described first state detection module U1 is by detecting described second choke coil L2's
Whether second end of the second end and described 3rd choke coil L3 is in electronegative potential, it is judged that the grafting shape that antenna is current
Whether state is firm grafting.
Further, can the high electronegative potential of the most described first state detection module, and described second
The radio frequency characteristic parameter of state detection module, judges the inserting state that antenna is current.
Such as, described first state detection module can be worked as and electronegative potential, and described second state inspection be detected
When the value of the radio frequency characteristic parameter that survey module detects is in the threshold range set, it is determined that antenna is current
Inserting state is grafting.Concrete, the value of described radio frequency characteristic parameter is in the threshold range of radio frequency
Can be that RSSI is higher than some setting threshold value.
When described first state detection module detects high potential, or described second state detection module detection
When the value of the radio frequency characteristic parameter arrived is not in the threshold range set, it is determined that the inserting state that antenna is current
For for connecting.Concrete, the value of described radio frequency characteristic parameter can not be RSSI in the threshold range set
Less than threshold value set in advance.
It addition, user can be by observing the light on and off of light emitting diode intuitively, it is judged that antenna is the most firm
Gu grafting.
First end J1 of described radio frequency connector is public connector end, the second end J2 of described radio frequency connector
For the female connectors end of described radio frequency connector, or, the first end J1 of described radio frequency connector is female connection
Device end, the public connector end that the second end J2 is described radio frequency connector of described radio frequency connector.
Be appreciated that when word " includes " and/or " comprising " is used in this specification, represent described feature,
Operation, element and/or the existence of assembly, but be not excluded for other features one or more, element, assembly and/
Or the existence of a combination thereof or interpolation.Unless otherwise clear and definite regulation or restriction, term " connects " and refers to be electrically connected
Connect.Concrete, it can be directly electrical connection, it is also possible to be to be connected by the Indirect Electro of other elements.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for this area skill
For art personnel, the present invention can have various change and change.All institutes within spirit and principles of the present invention
Any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (10)
1. an antenna inserting state detection device, it is characterised in that described antenna and radio frequency connector
First end electrical connection, the second end of described radio frequency connector is electrically connected with RF transceiver by rf signal line
Connecing, described detection device includes: external circuits, local circuit and the first state detection module；
Described external circuits includes the first choke coil, the first end of described first choke coil and described antenna and
First end electrical connection of described radio frequency connector, the second end ground connection of described first choke coil；
Described local circuit includes the second choke coil and the first pull-up resistor, the first of described first pull-up resistor
End electrically connects with dc source, and the second end electrically connects with the first end of described second choke coil, and described second grips
Second end of stream circle electrically connects with the second end of described radio frequency connector；
First state detection module, electrically connects with the second end of described radio frequency connector, be used for detecting described in penetrate
Frequently the current potential of the second end of connector.
Device the most according to claim 1, it is characterised in that described local circuit also includes:
Luminous indicating module, is connected between described first pull-up resistor and described second choke coil.
Device the most according to claim 2, it is characterised in that described luminous indicating module is luminous
Diode, and the anode of described light emitting diode is connected with the second end of described first pull-up resistor, described
The negative electrode of optical diode is connected with the first end of described second choke coil.
Device the most according to claim 1, it is characterised in that also include capacitance, described every
Straight capacitances in series is on described rf signal line, and is positioned at the second end and the radio-frequency receiving-transmitting of described radio frequency connector
Between device.
Device the most according to claim 1, it is characterised in that described local circuit also includes the 3rd
Choke coil and the second pull-up resistor, the first end of described second pull-up resistor electrically connects with described dc source,
Second end electrically connects with the first end of described 3rd choke coil, and the second end of described 3rd choke coil is penetrated with described
Frequently the second end electrical connection of connector.
Device the most according to claim 1, it is characterised in that the first end of described radio frequency connector
For public connector end, the female connectors end that the second end is described radio frequency connector of described radio frequency connector, or
Person, the first end of described radio frequency connector is female connectors end, and the second end of described radio frequency connector is described
The public connector end of radio frequency connector.
Device the most according to claim 1, it is characterised in that described first state detection module is
Baseband processing chip, described baseband processing chip is by universal input and output port and described radio frequency connector
Second end electrical connection.
8. according to the arbitrary described device of claim 1 to 7, it is characterised in that also include:
Second state detection module, for obtaining the radio frequency characteristic parameter receiving signal on rf signal line, root
The connection status of described antenna is judged according to described radio frequency characteristic parameter.
Device the most according to claim 8, it is characterised in that described radio frequency characteristic parameter includes connecing
Receive signal strength signal intensity instruction and/or carrier-in-interference noise ratio.
Device the most according to claim 9, it is characterised in that described second state detection module sets
It is placed in described RF transceiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610274143.0A CN105866611A (en) | 2016-04-28 | 2016-04-28 | Antenna plugging state detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610274143.0A CN105866611A (en) | 2016-04-28 | 2016-04-28 | Antenna plugging state detection device |
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| Publication Number | Publication Date |
|---|---|
| CN105866611A true CN105866611A (en) | 2016-08-17 |
Family
ID=56629607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610274143.0A Pending CN105866611A (en) | 2016-04-28 | 2016-04-28 | Antenna plugging state detection device |
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| Country | Link |
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| CN (1) | CN105866611A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106501664A (en) * | 2016-11-29 | 2017-03-15 | 歌尔科技有限公司 | A kind of testing equipment of electric equipment and detecting system |
| CN109270398A (en) * | 2017-07-18 | 2019-01-25 | 华为技术有限公司 | Detection method, device and the equipment of the slotting steady state of plug-in card |
| CN113466750A (en) * | 2020-03-31 | 2021-10-01 | 南宁富桂精密工业有限公司 | Antenna connection detection device and antenna connection detection method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1744476A (en) * | 2004-08-31 | 2006-03-08 | 中兴通讯股份有限公司 | Method and device for detecting connection state of antenna and feed line |
| JP2009302736A (en) * | 2008-06-11 | 2009-12-24 | Mitsubishi Electric Corp | Antenna connection detection circuit |
| CN102013927A (en) * | 2010-11-16 | 2011-04-13 | 意法·爱立信半导体（北京）有限公司 | Communication equipment and antenna testing device |
| CN102141593A (en) * | 2010-12-24 | 2011-08-03 | 华为终端有限公司 | Device and method for detecting extrapolation connection of radio frequency interface |
| CN202309017U (en) * | 2011-11-16 | 2012-07-04 | 成都芯通科技股份有限公司 | Overcurrent protection system for GPS (Global Positioning System) active antenna |
| CN202524381U (en) * | 2012-03-15 | 2012-11-07 | 深圳市麦格米特控制技术有限公司 | GSM wireless communication circuit |
| WO2013131230A1 (en) * | 2012-03-05 | 2013-09-12 | 华为终端有限公司 | Antenna switching circuit and wireless terminal device |
| US20140118151A1 (en) * | 2012-11-01 | 2014-05-01 | Landis+Gyr Innovations, Inc. | External Antenna Detection Device |
-
2016
- 2016-04-28 CN CN201610274143.0A patent/CN105866611A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1744476A (en) * | 2004-08-31 | 2006-03-08 | 中兴通讯股份有限公司 | Method and device for detecting connection state of antenna and feed line |
| JP2009302736A (en) * | 2008-06-11 | 2009-12-24 | Mitsubishi Electric Corp | Antenna connection detection circuit |
| CN102013927A (en) * | 2010-11-16 | 2011-04-13 | 意法·爱立信半导体（北京）有限公司 | Communication equipment and antenna testing device |
| CN102141593A (en) * | 2010-12-24 | 2011-08-03 | 华为终端有限公司 | Device and method for detecting extrapolation connection of radio frequency interface |
| CN202309017U (en) * | 2011-11-16 | 2012-07-04 | 成都芯通科技股份有限公司 | Overcurrent protection system for GPS (Global Positioning System) active antenna |
| WO2013131230A1 (en) * | 2012-03-05 | 2013-09-12 | 华为终端有限公司 | Antenna switching circuit and wireless terminal device |
| CN202524381U (en) * | 2012-03-15 | 2012-11-07 | 深圳市麦格米特控制技术有限公司 | GSM wireless communication circuit |
| US20140118151A1 (en) * | 2012-11-01 | 2014-05-01 | Landis+Gyr Innovations, Inc. | External Antenna Detection Device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106501664A (en) * | 2016-11-29 | 2017-03-15 | 歌尔科技有限公司 | A kind of testing equipment of electric equipment and detecting system |
| CN106501664B (en) * | 2016-11-29 | 2023-07-28 | 歌尔科技有限公司 | Detection equipment and detection system for electrical equipment |
| CN109270398A (en) * | 2017-07-18 | 2019-01-25 | 华为技术有限公司 | Detection method, device and the equipment of the slotting steady state of plug-in card |
| CN109270398B (en) * | 2017-07-18 | 2020-07-28 | 华为技术有限公司 | Method, device and equipment for detecting stable insertion state of plug-in card |
| CN113466750A (en) * | 2020-03-31 | 2021-10-01 | 南宁富桂精密工业有限公司 | Antenna connection detection device and antenna connection detection method |
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Application publication date: 20160817 |