CN110488102A - Antenna falls off detection circuit - Google Patents
Antenna falls off detection circuit Download PDFInfo
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- CN110488102A CN110488102A CN201910803352.3A CN201910803352A CN110488102A CN 110488102 A CN110488102 A CN 110488102A CN 201910803352 A CN201910803352 A CN 201910803352A CN 110488102 A CN110488102 A CN 110488102A
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- 238000001514 detection method Methods 0.000 title claims abstract description 64
- 239000003990 capacitor Substances 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 10
- 238000009434 installation Methods 0.000 description 12
- 241001062009 Indigofera Species 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000001914 filtration Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/10—Radiation diagrams of antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
Abstract
It falls off detection circuit the invention discloses a kind of antenna, including bluetooth module, bluetooth dual-mode antenna and the detection circuit that falls off, the bluetooth dual-mode antenna is connect with the bluetooth module, and the bluetooth dual-mode antenna is used to receive and dispatch the bluetooth wireless information of the bluetooth module input and output；The detection circuit that falls off is connect with the bluetooth module and bluetooth dual-mode antenna respectively, and the detection circuit that falls off is for detecting whether the bluetooth dual-mode antenna falls off.It falls off by the way that whether detection Bluetooth antenna has, bluetooth module can send background server for the connection status of Bluetooth antenna by other communication modes for Bluetooth antenna information, to facilitate supplier to obtain the state of Bluetooth antenna or whether fall off, after supplier obtains relevant information by background server, the faulty item of goalkeeper user in after-sales staff can be arranged to fix in time.
Description
Technical field
It falls off detection circuit the present invention relates to intelligent door lock technical field more particularly to a kind of antenna.
Background technique
Intelligent door lock is had any different in traditional mechanical door lock, and intelligent door lock primary electronic device controls motor rotation to control
The flexible of lock core is locked on the door or is opened, in use, generally using bluetooth client come the indigo plant with smart lock
Tooth module is communicated, and is in the prior art come the locking or opening operation of door with the rotation for controlling motor by bluetooth module
It is easy for installation, generally Bluetooth antenna is installed on bluetooth module by antenna mounting seat.By mounting base by bluetooth module
Bluetooth antenna obscission can be led in use by being installed in mounting base, and falling off for Bluetooth antenna will lead to Bluetooth communication
Failure can not be unlocked by Bluetooth wireless communication mode, and user may think that intelligent door lock in the case where not knowing specific situation
It is bad, it brings great inconvenience to users.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose that a kind of antenna falls off detection circuit.
To achieve the above object, antenna according to an embodiment of the present invention falls off detection circuit, and the antenna, which falls off, detects electricity
Road includes:
Bluetooth module；
Bluetooth dual-mode antenna, the bluetooth dual-mode antenna are connect with the bluetooth module, and the bluetooth dual-mode antenna is used for
Receive and dispatch the bluetooth wireless information of the bluetooth module input and output；
Fall off detection circuit, and the detection circuit that falls off is connect with the bluetooth module and bluetooth dual-mode antenna respectively, institute
The detection circuit that falls off is stated for detecting whether the bluetooth dual-mode antenna falls off.
Further, according to one embodiment of present invention, the detection circuit that falls off includes: inductance L809 and resistance
One end of R810, the resistance R810 are connect with power supply, and the other end of the resistance R810 and one end of inductance L809 connect
It connects, the other end of the inductance L809 is connect with one end of bluetooth dual-mode antenna, the other end and ginseng of the bluetooth dual-mode antenna
Connect with examining, the inductance L809, resistance R810 common end connect with the bluetooth module.
Further, according to one embodiment of present invention, the detection circuit that falls off further include: resistance R809, it is described
One end of resistance R809 is connect with one end of the resistance R810, and the other end of the resistance R809 is connect with reference.
Further, according to one embodiment of present invention, the detection circuit that falls off further include: capacitor C826, it is described
One end of capacitor C826 is connect with one end of the resistance R810, and the other end of the capacitor C826 is connect with reference.
Further, according to one embodiment of present invention, further includes: bluetooth dual-mode antenna interface, the bluetooth transmitting-receiving
Antenna is detachably connected by the bluetooth dual-mode antenna interface with the bluetooth module.
It further, according to one embodiment of present invention, include ground connection on the outside of the bluetooth dual-mode antenna interface
Conductive shell, bluetooth dual-mode antenna are connect by the ground connection conductive shell with reference.
Antenna provided in an embodiment of the present invention falls off detection circuit by detecting whether Bluetooth antenna has and fall off, and is detecting
Bluetooth antenna has when falling off, bluetooth module can by Bluetooth antenna information by other communication modes by the connection status of Bluetooth antenna
It is sent to background server, to facilitate supplier to obtain the state of Bluetooth antenna or whether fall off, supplier passes through background service
After device obtains relevant information, the faulty item of goalkeeper user in after-sales staff can be arranged to fix in time.
Detailed description of the invention
Fig. 1 is that antenna provided in an embodiment of the present invention falls off detection circuit structural block diagram；
Fig. 2 is that antenna provided in an embodiment of the present invention falls off detection circuit block diagram；
Fig. 3 is that another antenna provided in an embodiment of the present invention falls off detection circuit block diagram；
Fig. 4 is bluetooth dual-mode antenna installation diagram provided in an embodiment of the present invention.
Appended drawing reference:
The detection circuit that falls off 10；
Bluetooth module 20；
Door lock Bluetooth chip 201；
Bluetooth filter circuit 202；
Bluetooth dual-mode antenna interface 30；
Earth conductor shell 301；
Bluetooth receiving and transmitting signal line 302；
Bluetooth dual-mode antenna 40；
Antenna ground shell 401；
Antenna ground line 402.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.Unless otherwise defined, used herein
All technical and scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.Herein
Used term, which is only for the purpose of describing specific embodiments, in the description of the invention is not intended to limit this
Invention.
Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments
Containing at least one embodiment of the present invention.Each position in the description occur the phrase might not each mean it is identical
Embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly and
Implicitly understand, embodiment described herein can be combined with other embodiments.
Refering to fig. 1, the embodiment of the present invention provides a kind of antenna and falls off detection circuit 10, comprising: bluetooth module 20, bluetooth are received
Hair antenna 40 and the detection circuit 10 that falls off, bluetooth dual-mode antenna 40 are connect with bluetooth module 20, and bluetooth dual-mode antenna 40 is for receiving
Send out the bluetooth wireless signal of 20 input and output of bluetooth module；The detection circuit that falls off 10 receives and dispatches day with bluetooth module 20 and bluetooth respectively
Line 40 connects, and the detection circuit that falls off 10 is for detecting whether bluetooth dual-mode antenna 40 falls off.Specifically, leading in intelligent door lock
Often by bluetooth module come the client communication with user.On the one hand, the order that opens up of user is received by bluetooth module, and
Motor rotation is controlled to unlock.On the other hand, the unlocking condition of intelligent door lock is fed back into user client.And bluetooth module
Communication quality and the stability of communication are largely determined by Bluetooth antenna.For the stability of Bluetooth signal, generally adopt
Use the independent Bluetooth antenna of detachable as the dual-mode antenna of bluetooth module, not due to detachable independent Bluetooth antenna
It is integrated in together with bluetooth module on same circuit board.Cause Bluetooth antenna after using so that the time is long, it may be due to
The reasons such as vibration fall off.If Bluetooth antenna falls off, the communication quality of bluetooth module will be seriously affected.
As shown in fig. 1, in embodiments of the present invention, bluetooth dual-mode antenna 40 can by antennal interface and bluetooth module 20
Dismantling connection.In use process, bluetooth dual-mode antenna 40 may fall off with antennal interface, it is, bluetooth dual-mode antenna 40
It is separated with Bluetooth antenna interface 30, since Bluetooth antenna interface 30 directly connects with the RF signal output of bluetooth module 20
It connects, bluetooth wireless signal is transmitted and received to bluetooth dual-mode antenna by Bluetooth antenna interface 30, after bluetooth dual-mode antenna 40 falls off,
Bluetooth antenna interface transmits bluetooth wireless signal without normal direction bluetooth dual-mode antenna 40, and the received bluetooth of bluetooth dual-mode antenna 40 is wireless
Signal can not also be transmitted to bluetooth module 20, so as to cause the communication failure of bluetooth module 20.At this point, user just can not pass through indigo plant
The control of tooth progress intelligent door lock.In the unwitting situation of user, latch failure will be considered that, influence the use of user.Such as Fig. 1
Shown in, the detection circuit that falls off 10 is arranged between bluetooth module 20 and Bluetooth antenna interface 30, passes through antenna detection circuit 10
It detects the level signal at 30 end of Bluetooth antenna interface, and obtains bluetooth receipts by the level signal at 30 end of Bluetooth antenna interface
The installation condition for sending out antenna 40, since can to reflect whether bluetooth dual-mode antenna 40 has de- for the installation condition of bluetooth dual-mode antenna 40
It falls.The state of bluetooth dual-mode antenna 40 can be detected in real time to by Bluetooth antenna interface 30, and will test result biography
It send to bluetooth module 20, obtains the state of bluetooth dual-mode antenna 40 in real time by bluetooth module 20.Detecting Bluetooth antenna
Have that when falling off, bluetooth module 20 can be sent the connection status of Bluetooth antenna to Bluetooth antenna information to by other communication modes
Background server, whether to facilitate supplier to obtain the state of Bluetooth antenna or fall off, supplier is obtained by background server
After relevant information, the faulty item of goalkeeper user in after-sales staff can be arranged to fix in time.
The antenna provided in an embodiment of the present invention detection circuit 10 that falls off connects with bluetooth module 20 and by Bluetooth antenna respectively
Mouth 30 is connect with bluetooth dual-mode antenna 40, and the level signal at 30 end of Bluetooth antenna interface is detected by antenna detection circuit 10,
And the installation condition of bluetooth dual-mode antenna 40 is obtained by the level signal at 30 end of Bluetooth antenna interface, since bluetooth receives and dispatches day
The installation condition of line 40 can reflect whether bluetooth dual-mode antenna 40 has and fall off.It falls off, is examining by the way that whether detection Bluetooth antenna has
Measuring Bluetooth antenna has when falling off, and Bluetooth antenna information can be sent to user, is fallen off letter with facilitating user to obtain Bluetooth antenna
Breath, and other modes can be taken to unlock.For example, being unlocked using fingerprint recognition mode, in addition, user can also be according to instruction information
Bluetooth antenna is reinstalled into installation bluetooth mounting base, so that bluetooth, which is wirelessly unlocked, to be worked normally again, to increase use
The usage experience at family.
Referring to Fig.2, further, in one embodiment of the invention, the detection circuit that falls off 10 include: inductance L809 and
One end of resistance R810, resistance R810 are connect with power supply VDD2V8, the other end of resistance R810 and one end of inductance L809
Connection, the other end of inductance L809 are connect with one end of bluetooth dual-mode antenna 40, the other end of bluetooth dual-mode antenna 40 and reference
Ground connection, inductance L809, resistance R810 common end connect with bluetooth module 20.
As shown in Figure 2, inductance L809 and resistance R810 constitutes level sensitive circuit, and one end of inductance L809 passes through resistance
R810 is connect with power supply VDD2V8, and power supply VDD2V8 the other end of inductance L809 and passes through day as reference power source
Line interface 30 is connect with the wireless signal output end of bluetooth dual-mode antenna 40 and bluetooth module.Since the one end inductance L809 passes through electricity
Resistance R810 is connect with power supply VDD2V8, and the inductance L809 other end is connect by bluetooth dual-mode antenna 40 with reference, therefore logical
The level state for crossing inductance L809 can directly react the connection status of bluetooth dual-mode antenna 40.Namely when Bluetooth antenna does not take off
When falling, inductance L809 is connect by bluetooth dual-mode antenna 40 with reference.At this point, with reference to ground by inductance L809, resistance R810
The level of common end drags down, and low level is transmitted to bluetooth module 20, bluetooth module by the test side P030_MBTANT_DET
20 pass through acquisition inductance L809, the common end test side P030_MBTANT_DET of resistance R810 is low level, can be according to P030_
MBTANT_DET detects the low level of end signal to detect that antenna does not fall off.It is, when P030_MBTANT_DET is detected
When end is low level, illustrate Bluetooth antenna with reference to ground bluetooth module reference on circuit boards normally connect.Show indigo plant
Tooth dual-mode antenna 40 does not fall off；When Bluetooth antenna falls off, between inductance L809, the common end of Bluetooth antenna 40 and reference ground
Disconnect, at this time inductance L809, resistance R810 the common end test side P030_MBTANT_DET be high level.Bluetooth module 20 exists
Get the test side P030_MBTANT_DET be high level when, can be detected bluetooth dual-mode antenna 40 and fallen off.
It should be noted that the other end of inductance L809 is connect with the RF output end of bluetooth module 20, due to bluetooth mould
The 2.4GHZ radiofrequency signal that block 20 exports, inductance L809 play the role of that bluetooth 2.4GHZ radiofrequency signal is isolated, and avoid bluetooth
Interference of the 2.4GHZ signal RF signal to the signal of the test side P030_MBTANT_DET.It is blue after isolation by inductance L809
The 2.4GHZ radiofrequency signal that tooth module 20 exports has no effect on normal inspection of the antenna detection circuit 10 to bluetooth dual-mode antenna 40
It surveys.The embodiment of the present invention is connect by inductance L809, resistance R810 with bluetooth dual-mode antenna 40 and bluetooth module 20, realizes bluetooth
The detection of dual-mode antenna 40, by the level value of one end of inductance L809, the available installation shape to bluetooth dual-mode antenna 40
State falls off to detect whether bluetooth dual-mode antenna 40 has, and the Bluetooth antenna level signal that falls off is transmitted to bluetooth module
20, it is detected in real time with whether having to fall off to bluetooth dual-mode antenna 40 by bluetooth module 20.The antenna detection circuit
Simple to use, production cost is low, to the detection high reliablity of bluetooth dual-mode antenna 40.
Referring to Fig.2, further, in one embodiment of the invention, the detection circuit that falls off 10 further include: resistance
One end of R809, resistance R809 are connect with one end of resistance R810, and the other end of resistance R809 is connect with reference.Specifically,
Bleeder circuit is formed by resistance R809 and resistance R810, will be exported after power supply VDD2V8 partial pressure to bluetooth module 20, by
The reference voltage detection of bluetooth module 20 may be able to satisfy in the voltage value of power supply VDD2V8, by resistance R809 with
Resistance R810 forms bleeder circuit, is being transmitted to bluetooth module 20 after can dividing to the voltage of power supply VDD2V8, with
Meet the reference voltage detection to bluetooth dual-mode antenna of bluetooth module 20, in order to which bluetooth module 20 can antenna detection circuit 10
The voltage value of output is normally detected.Certainly, the reference voltage detection of bluetooth module 20 is met in power supply VDD2V8
When, need resistance R809 to be divided.The output voltage of power supply VDD2V8 is directly transferred to carry out in bluetooth module 20
Detection.The resistance value of resistance R810 and resistance R809 can be according to the voltage value of power supply VDD2V8 and the voltages of bluetooth module 20
Detection range is set, to be adapted to the bluetooth module of different model.
Referring to Fig.2, further, in one embodiment of the invention, the detection circuit that falls off 10 further include: capacitor
One end of C826, capacitor C826 are connect with one end of resistance R810, and the other end of capacitor C826 is connect with reference.By will be electric
Hold C826 and be incorporated into 20 signal antenna of bluetooth module and fall off collection terminal, filtering interference signals guarantee 20 sampled voltage of bluetooth module
Stability, the error detection for avoiding bluetooth dual-mode antenna from falling off.It, can be by bluetooth module 20 since capacitor C826 has filter action
The issuable interference signal of the test side P030_MBTANT_DET filter out.Guarantee the P030_MBTANT_ of bluetooth module 20
The level of the test side DET is in relatively steady state, since the interference signal inside external signal or intelligent door lock can be superimposed
To the test side P030_MBTANT_DET of bluetooth module 20, such signal is generally of short duration surging signal.If such signal
It does not filter out, it is likely that the P030_MBTANT_DET detection end signal of bluetooth module 20 is dragged down or raised suddenly, and is transferred to indigo plant
After tooth module 20, the erroneous judgement of bluetooth module 20 will lead to, to increase the frequency of intelligent door lock report failure, influence the body of user
It tests.Of short duration surging signal can be filtered out to the P030_MBTANT_DET detection for completely guaranteeing bluetooth module 20 by capacitor C826
End is not by the interference of of short duration surging signal.To reduce the frequency of intelligent door lock report failure, the experience of user is improved.
Refering to Fig. 3, further, in one embodiment of the invention, antenna falls off detection circuit 10 further include: bluetooth
Dual-mode antenna interface 30, bluetooth dual-mode antenna 40 are detachably connected by bluetooth dual-mode antenna interface 30 with bluetooth module 20.Such as
Shown in Fig. 3, since the Bluetooth antenna of the embodiment of the present invention is external antenna, there is no be integrated in together antenna with bluetooth module 20
On one circuit board.And bluetooth dual-mode antenna interface 30 is mounted on bluetooth module 20 and is fixed on same circuit board, and
It is detachably connected by bluetooth dual-mode antenna interface 30 with bluetooth dual-mode antenna 40.In one embodiment of the invention, bluetooth
Dual-mode antenna interface 30 can be SMA interface, can easily be connected bluetooth dual-mode antenna 40 with bluetooth module 20 by SMA interface
It connects.As shown in Figures 2 and 3, the bluetooth dual-mode antenna interface 30 is SMA interface JB01, can be facilitated by SMA interface JB01
Ground is connect with bluetooth dual-mode antenna 40.As shown in Figure 2, one end of bluetooth dual-mode antenna 40 passes through interface JB01 and bluetooth module
The antenna condition test side connection of 20 RF signal output and antenna detection circuit.With by interface JB01 receive and dispatch bluetooth without
Line signal.The other end of bluetooth dual-mode antenna 40 is connect with reference, will be on antenna detection circuit by with reference connecting
The level of inductance L809 is pulled to low level, to indicate that bluetooth dual-mode antenna 40 is in normal connection status.It should be noted that In
When connecting by SMA interface JB01 with Bluetooth antenna, pass through the signal end and bluetooth dual-mode antenna 40 of the central axis of SMA interface
The other end of one end connection, bluetooth dual-mode antenna 40 is connect by lead-out wire with the outside of SMA interface JB01, and SMA interface is passed through
The outside of JB01 is connect with reference, and the other end of bluetooth dual-mode antenna 40 is connected to reference to ground.Bluetooth dual-mode antenna 40
By the installation condition for showing bluetooth dual-mode antenna 40 with the connection with reference to ground.It is, when bluetooth dual-mode antenna 40 is installed
It is in good condition, and when not falling off, the other end of bluetooth dual-mode antenna with reference to be connected to；When bluetooth dual-mode antenna 40 installs shape
State is bad, and when having fallen off, and the other end of bluetooth dual-mode antenna and disconnects with reference to ground.Antenna detection circuit 10 mainly passes through inspection
Whether the level voltage for surveying 40 one end of bluetooth dual-mode antenna is low level, can get the transmitting-receiving of bluetooth dual-mode antenna 40 and fall off,
Bluetooth dual-mode antenna 40 does not fall off, and low level can be detected in antenna detection circuit 10, is otherwise high level.
Bluetooth dual-mode antenna 40 can be advantageously connected to bluetooth by bluetooth dual-mode antenna interface 30 by the embodiment of the present invention
Module 20, and the other end of bluetooth dual-mode antenna 40 is connected to reference to ground, to facilitate indigo plant by bluetooth dual-mode antenna interface 30
Tooth module 20 checks the installation condition of bluetooth dual-mode antenna.Circuit structure is simply small and exquisite, and cost of implementation is low.
Refering to Fig. 4, further, in one embodiment of the invention, the outside of bluetooth dual-mode antenna interface 30 includes
There is ground connection conductive shell 301, bluetooth dual-mode antenna 40 is connect by ground connection conductive shell with reference.As shown in Figure 4, bluetooth
The other end of dual-mode antenna 40 can be directly led out by antenna ground line 402, and lead to antenna ground shell 401, and antenna connects
Ground shell 401 is adapted with the top of ground connection conductive shell 301, is connect bluetooth dual-mode antenna 40 is connected to bluetooth dual-mode antenna
When mouth 30, ground connection conductive shell 301 is connect with ground connection conductive shell 301 on the outside of bluetooth dual-mode antenna interface 30, and ground connection is led
Electric shell 301 is connect with reference, to guiding the other end of bluetooth dual-mode antenna 40 to reference.It should be noted that
The ground connection conductive shell 301 in mode and bluetooth dual-mode antenna interface 30 that antenna ground shell 401 can be connected through a screw thread connects
It connects.After being installed to bluetooth dual-mode antenna interface 30 by bluetooth dual-mode antenna 40, the separate bluetooth module 20 of bluetooth dual-mode antenna
Signal output end (other end of bluetooth dual-mode antenna) can directly with ground connection conductive shell 301 be directly connected to, thus by bluetooth
The signal output end (other end of bluetooth dual-mode antenna) of the separate bluetooth module 20 of dual-mode antenna 40 is connected to reference to ground.This hair
It, can be more easily by the letter of the separate bluetooth module 20 of bluetooth dual-mode antenna 40 by ground connection conductive shell 301 in bright embodiment
Number output end is connected to reference to ground.Bluetooth dual-mode antenna 30 structures of interface are simple, can cooperate the corresponding knot of bluetooth dual-mode antenna 40
Structure is used together.Facilitate the installation of bluetooth dual-mode antenna 40 and with reference connecting for bluetooth dual-mode antenna 40.Meanwhile cooperating day
Line detection circuit can the installation condition preferably to bluetooth dual-mode antenna 40 detect.
The above is only the embodiment of the present invention, are not intended to limit the scope of the patents of the invention, although with reference to the foregoing embodiments
Invention is explained in detail, still can be to aforementioned each specific reality for coming for those skilled in the art
It applies technical solution documented by mode to modify, or equivalence replacement is carried out to part of technical characteristic.It is all to utilize this
The equivalent structure that description of the invention and accompanying drawing content are done directly or indirectly is used in other related technical areas, similarly
Within the invention patent protection scope.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case where can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.
Claims (6)
- The detection circuit 1. a kind of antenna falls off characterized by comprisingBluetooth module；Bluetooth dual-mode antenna, the bluetooth dual-mode antenna are connect with the bluetooth module, and the bluetooth dual-mode antenna is for receiving and dispatching The bluetooth wireless information of the bluetooth module input and output；Fall off detection circuit, and the detection circuit that falls off is connect with the bluetooth module and bluetooth dual-mode antenna respectively, described de- Detection circuit is fallen for detecting whether the bluetooth dual-mode antenna falls off.
- The detection circuit 2. antenna according to claim 1 falls off, which is characterized in that the detection circuit that falls off includes: electricity Sense (L809) and resistance (R810), one end of the resistance (R810) connect with power supply, the resistance (R810) it is another End is connect with one end of inductance (L809), and the other end of the inductance (L809) is connect with one end of bluetooth dual-mode antenna, described The other end of bluetooth dual-mode antenna is connect with reference, the inductance (L809), the common end of resistance (R810) and the bluetooth Module connection.
- The detection circuit 3. antenna according to claim 2 falls off, which is characterized in that the detection circuit that falls off further include: One end of resistance (R809), the resistance (R809) is connect with one end of the resistance (R810), and (R809's is another for the resistance End is connect with reference.
- The detection circuit 4. antenna according to claim 2 or 3 falls off, which is characterized in that the detection circuit that falls off also is wrapped Include: one end of capacitor (C826), the capacitor (C826) is connect with one end of the resistance (R810), the capacitor (C826) The other end is connect with reference.
- The detection circuit 5. antenna according to claim 1 falls off, which is characterized in that further include: bluetooth dual-mode antenna interface, The bluetooth dual-mode antenna is detachably connected by the bluetooth dual-mode antenna interface with the bluetooth module.
- The detection circuit 6. antenna according to claim 5 falls off, which is characterized in that outside the bluetooth dual-mode antenna interface Side includes ground connection conductive shell, and bluetooth dual-mode antenna is connect by the ground connection conductive shell with reference.
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|---|---|---|---|
| CN201910803352.3A CN110488102A (en) | 2019-08-28 | 2019-08-28 | Antenna falls off detection circuit |
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| CN201910803352.3A CN110488102A (en) | 2019-08-28 | 2019-08-28 | Antenna falls off detection circuit |
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| CN107402330A (en) * | 2017-09-08 | 2017-11-28 | 慧翰微电子股份有限公司 | TBOX external antennas measure loop and detection method |
| CN209296821U (en) * | 2018-11-22 | 2019-08-23 | 东软集团股份有限公司 | Detection device, system and the electronic equipment of external antenna interface |
| CN211123050U (en) * | 2019-08-28 | 2020-07-28 | 深圳市朗仁科技有限公司 | Antenna falling detection circuit |
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