CN207410416U - A kind of imaging terminal - Google Patents

Abstract

The utility model discloses a kind of imaging terminal, imaging terminal includes：Outer framework is provided at least one induction zone on outer framework；Hall switch is arranged at induction zone, for sensing the changes of magnetic field at induction zone and exporting hall signal；Mode-changeover device, for according to the hall signal from Hall switch received, being switched over to the operating mode of imaging terminal.The utility model sets magnet corresponding with sensing zone position by setting induction zone and Hall switch on imaging terminal on imaging terminal Add-on accessories, and realization is switched fast imaging antenna connection and terminal operating mode.

Description

A kind of imaging terminal

Technical field

The utility model is related to imaging system field more particularly to a kind of imaging terminals.

Background technology

Sport video live streaming is the new developing direction of recent imaging terminal.The live streaming application environment of current imaging terminal is usual For wild environment, signal transmission is carried out by mobile internet especially 4G networks.

In external environment out of office, in order to adapt to different photographed scenes, imaging terminal can install different adaptation attachmentes additional：Example Such as, under water in environment, imaging terminal can install the waterproof cover with external antenna additional, to ensure the watertightness inside imaging terminal With the normal transmission of live signal.Under the environment such as bicycle, passing through by walk, imaging terminal can install outer cover and stent additional again, use In fixation.

Including above-mentioned imaging terminal body and attachment imaging terminal system, in the prior art, at least there are following points：

1st, when imaging terminal in the wild, it is underwater when in environment, to adapt to the signal characteristic under the application scenarios（Such as water Lower environment is stronger to signal attenuation or wild environment is usually applicable in low frequency band signal etc.）, obtain good signal Ability is sended and received, it is necessary to coordinate with the attachment with antenna, increases signal strength.However, external antenna and built-in aerial Due to the difference in length of itself, working frequency difference is often larger；Wherein, external antenna length is longer, tends to compared with benefit Manage the 4G signals of low frequency band（Such as 700-1000MHz）, and built-in aerial length is shorter, can preferably handle high-frequency band 4G signals（Such as 1800MHz-2600MHz）.When interior external antenna works at the same time, meeting between the signal of different operating frequency Generation crosstalk, especially including/external antenna it is closer to the distance when, can so that signal of the imaging terminal in all working frequency is strong Degree is weakened.

2nd, when the different camera accessory of imaging terminal adaptation, correspondence can be oriented to different operating modes.In the prior art Common processing method is to add in identification circuit in camera accessory, and identification signal is generated when connecting imaging terminal.But add in electricity Road can increase attachment cost, while reduce the reliability of camera accessory.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of imaging terminal, Add-on accessories and into As terminal control method, by setting induction zone and corresponding Hall switch on imaging terminal, realization is switched fast imaging eventually End pattern.

The purpose of this utility model is achieved through the following technical solutions：

First, in the utility model one embodiment, a kind of imaging terminal is provided, including：

Outer framework is provided at least one induction zone on the outer framework；

First Hall switch, is arranged at induction zone（1）, for sensing the changes of magnetic field at induction zone and exporting the first Hall Signal；

Mode-changeover device, for the hall signal from Hall switch that basis receives, the work to imaging terminal Pattern switches over

Wherein, mode-changeover device includes：

Built-in aerial, for sending and receiving signal；

External antenna interface, for being attached with external antenna；

Antenna-switching device, the first switch terminal and the second switch terminal, the 3rd end and control terminal, wherein the first switch terminal connects To the built-in aerial, the second switch terminal is connected to the external antenna interface, and the 3rd end is to be connected to a signal transmission module, Control terminal is connected with first Hall switch, receives first hall signal；

Wherein, when the magnetic field intensity at first Hall switch is more than a first threshold, first hall signal The first logical states are jumped to, when first hall signal is in the first logical states, the 3rd end is the same as the described second switching End connection and with first switch terminal disconnect, first hall signal at first Hall switch without external magnetic field when In the second logical states, when first hall signal is in the second logical states, the 3rd end is the same as first switch terminal It connects and is disconnected with second switch terminal.

Preferably, the mode-changeover device further includes：

RF transceiver, as the signal transmission module, for suitable frequency range to be selected to send in signal and reception It puts or signal that external antenna receives；

Logic processing module is connected to the RF transceiver and first Hall switch, when first Hall is believed When number being located at the first logical states, the logic processing module sets the modem to work in the first frequency range, when described When first hall signal is located at the second logical states, the logic processing module sets the modem to work in the second frequency range It is interior.

In one embodiment, the antenna-switching device is single-pole double-throw type analog switch or two independent moulds Intend switch.

In one embodiment, the logic processing module is made of logic gates；

In one embodiment, first frequency range is less than second frequency range.

In one embodiment, the mode-changeover device further includes：

The imaging terminal further includes one second Hall switch, is arranged at the second induction zone（2）, described pattern switching dress It puts and further includes：

Touch input module, for receiving operation from the user and being converted to electric signal；

Logic processing module is connected to the touch input module and second Hall switch, wherein, the logic Processing module receives the second hall signal of the second Hall switch output, when second Hall switch is the first logical states, The logic processing module closes the touch input module, described to patrol when second Hall switch is the second logical states It collects processing module and opens the touch input module, second hall signal is at second Hall switch without external magnetic field When in the second logical states, the magnetic field intensity at first Hall switch jumps to the first logic when being more than a second threshold State.

In one embodiment, it is additionally provided on the camera frame：

Power contact, for providing supply port to external power supply.

In one embodiment, first induction zone（1）With the second induction zone（2）Frame material be paramagnetism material Matter, and it is different with the frame material of peripheral region.

In one embodiment, each Hall switch includes the first Hall sensor and hysteresis comparator；First The two poles of the earth of Hall sensor and two input terminals of hysteresis comparator connect；The output terminal of hysteresis comparator exports the Hall letter Number.

In another embodiment, each Hall switch includes a Hall sensor array；The hall sensing Device array includes the first Hall sensor, the second Hall sensor and the 3rd Hall sensor, and the first Hall sensor, second are suddenly The two poles of the earth of your sensor and the 3rd Hall sensor be connected respectively with the first hysteresis comparator, the second hysteresis comparator and Two input terminals of the 3rd hysteresis comparator, the output terminal of the first hysteresis comparator are connected with a phase inverter, the phase inverter Output terminal is connected with the first input end of the first AND gate circuit, the output terminal point of the second hysteresis comparator and the second hysteresis comparator It is not connected with the second input terminal of the first AND gate circuit and the 3rd input terminal, the output terminal output Hall letter of the first AND gate circuit Number；The stagnant loop voltag width of first hysteresis comparator, the second hysteresis comparator and the 3rd hysteresis comparator is different；

Wherein, the first Hall sensor and the 3rd Hall sensor are respectively in the second Hall sensor Hall sensor two Side, first Hall sensor, the second Hall sensor and the 3rd Hall sensor can be monopole hall effect sensor Or full pole hall effect sensor.

In one embodiment, the Hall switch further includes time delay module and the second AND gate circuit, the delay mould The input terminal of block and the first input end of second AND gate circuit receive the hall signal, the output of the time delay module End is connected with the second input terminal of second AND gate circuit, and the output terminal of the AND gate circuit exports Hall after treatment Signal.

In one embodiment, imaging terminal described in the utility model may also include a kind of imaging terminal Add-on accessories, Including：

Adjunct Framework posts and fixes installation at least part frame surface topography with the imaging terminal, described Adjunct Framework on be provided at least one field regions；

Field generating component sets the field regions, in the operating condition, being produced in the corresponding induction zone of imaging terminal Magnetisation field, except with attachment support construction be connected in addition to, the field generating component in the operating condition not with the Add-on accessories Other parts or imaging terminal contact；

Add-on assemble is arranged on the Adjunct Framework, is connected with the external interface of imaging terminal, for for the imaging Terminal provides additional function.

In one embodiment, the add-on assemble is external antenna.

In one embodiment, the Add-on accessories are waterproof cover.

In one embodiment, the imaging terminal Add-on accessories further include：

External power supply, for being powered to imaging terminal；

Power supply contact provides supply port to imaging terminal.

In one embodiment, the field generating component is magnet.

The beneficial effects of the utility model are：

（1）The utility model on imaging terminal by setting induction zone and Hall switch, in imaging terminal Add-on accessories Upper setting magnet corresponding with sensing zone position, realization are switched fast imaging terminal pattern.

（2）The utility model realization is switched fast built-in aerial and external antenna, when imaging terminal Add-on accessories are with outer Antenna is connect, the position that imaging terminal Add-on accessories correspond to the first induction zone of imaging terminal is provided with magnet, at this time the first Hall Inductive switching reaches threshold value to external magnetic field strength, and attachment of the Hall switch prompting with external antenna has accessed imaging eventually End, duplexer disconnect the connection with built-in aerial, only receive the signal from external antenna.

（3）The utility model realization is switched fast waterproof cover steer mode and imaging terminal steer mode, works as imaging terminal Add-on accessories carry the operation and control interface of waterproof（Water-proof function button）, imaging terminal Add-on accessories feel corresponding to imaging terminal second The position in area is answered to be provided with magnet, when the second Hall switch senses that external magnetic field strength reaches threshold value, i.e. prompting has anti- The attachment of water shielding function has accessed imaging terminal, and user can not continue through the original operation and control interface of imaging terminal at this time, and It needs to be manipulated by the manipulation button on attachment.

（4）The antenna-switching device of the utility model is a single-pole double-throw type analog switch or two independent simulations Switch, when modem connects external antenna by external antenna interface, built-in aerial does not form logical with modem Road, the antenna effect for avoiding the generation of imaging terminal internal wiring form crosstalk to the work of built-in aerial and external antenna.

（5）The material that first induction zone and the second induction zone are located at camera frame surface portion can be magnetic metal material Matter, can be to sensing and strengthening external magnetic field.

（6）By the hysteresis band of hysteresis comparator in reasonable set Hall switch, it can make what Hall switch was exported Hall voltage just exports high level signal when reaching a higher threshold value, so can be located at complicated electromagnetism ring to avoid when camera In border, environmental magnetic field interference is subject to cause the false triggering of the first Hall switch.Likewise, by prolonging in reasonable set Hall switch When module TD delay time, can make the first Hall switch and the second Hall switch that there is the interference of anti-moment high-intensity magnetic field Ability.

（7）Hall switch is by the way of Hall sensor array, even if imaging terminal is placed near kicker magnet, due to Kicker magnet is difficult to form satisfactory magnetic equipotential face at Hall 1 and Hall 3, therefore imaging terminal will not be mistakenly considered Add-on accessories access, and further improve antijamming capability.

（8）In addition to antenna, the Add-on accessories of imaging terminal do not include any active circuit, the use environment such as water in part Under, effectively increase system reliability.

（9）It is more severe usually using environment when accessing the Add-on accessories such as waterproof cover containing antenna, such as positioned at Field is underwater, and imaging terminal automatically switches to external antenna at this time, is conducive to send and receive covering power and penetration power is stronger Frequency band signals（Such as 700MHz, 800MHz), and when not accessing Add-on accessories, in the case of use environment is preferable, such as Built-in aerial is automatically switched to positioned at indoor or urban area, imaging terminal, is conducive to send and receive common indoor frequency range Signal（Such as 1800MHz, 2600MHz）.

Description of the drawings

Fig. 1 is the utility model embodiment circuit diagram；

Fig. 2 is the first induction zone of the utility model embodiment, the second induction zone and power contact position view；

Fig. 3 is the utility model embodiment Add-on accessories and imaging terminal assembling schematic diagram；

Fig. 4 is the one of embodiment Hall switch circuit schematic diagram of the utility model；

Fig. 5 is the utility model another embodiment Hall switch circuit schematic diagram；

The position that Fig. 6 is Hall sensor Hall1, Hall2 and Hall3 sets schematic diagram；

Fig. 7 is the utility model flow diagram；

In figure, the first induction zones of 1-, the second induction zones of 2-, 3- power contacts, the first magnet of 4-, the second magnet of 5-, 6- is straight Broadcast key, 7- power keys, 8- shutter key.

Specific embodiment

The technical solution of the utility model is described in further detail below in conjunction with the accompanying drawings：

Specific embodiment of the utility model is described more fully below, it should be noted that the embodiments described herein is served only for For example, it is not intended to limit the utility model.In the following description, in order to provide the thorough understanding to the utility model, Elaborate a large amount of specific details.It will be apparent, however, to one skilled in the art that：These certain details need not be used It saves to carry out the utility model.In other instances, in order to avoid obscuring the utility model, well known circuit is not specifically described, Software or method.

Throughout the specification, meaning is referred to " one embodiment ", " embodiment ", " example " or " example " It：At least one implementation of the utility model is comprised in reference to a particular feature, structure, or characteristic that the embodiment or example describe In example.Therefore, entire disclosure it is each place occur the phrase " in one embodiment ", " in embodiment ", " one Example " or " example " are not necessarily all referring to the same embodiment or example.Furthermore, it is possible to any appropriate combination and or sub-portfolio By specific feature, structure or characteristic combination in one or more embodiments or example.In addition, those of ordinary skill in the art It should be appreciated that diagram is provided to the purpose of explanation provided herein, and diagram is not necessarily drawn to scale.

As Fig. 1 and Fig. 2 respectively illustrate the internal circuit configuration schematic diagram and external structure schematic diagram of a kind of imaging terminal. Imaging terminal includes：

Outer framework is provided at least one induction zone on outer framework, such as, it is illustrated that in embodiment, imaging terminal is set There are the first induction zone 1 and the second induction zone 2；

First Hall switch H1, is arranged at induction zone 1, for sensing the changes of magnetic field at induction zone and exporting the first Hall Signal；

Mode-changeover device 101, for the hall signal from Hall switch that basis receives, to the work of imaging terminal Operation mode switches over；

Wherein, mode-changeover device 101 includes：

Built-in aerial is arranged inside outer framework, for sending and receiving signal；

External antenna interface is arranged at outer framework surface, for being attached with external antenna；

Antenna-switching device 102 has the first switch terminal A, the second switch terminal B, the 3rd end C and control terminal D, wherein first Switch terminal A is connected to built-in aerial, and the second switch terminal is connected to external antenna interface, and the 3rd end is connected to a signal transmission module 103, control terminal D are connected with the first Hall switch H1, receive the first hall signal SH1.

In one embodiment, antenna-switching device 102 switchs for a single pole double throw analog.In another embodiment, Antenna-switching device 102 is two independent analog switches, and the 3rd end C is the common port of two analog switches, and two simulations are opened It closes and shares control, each turned on and off according to the first hall signal SH1 controls.

First hall signal has at least two logical states, for example, the first hall signal can be a square-wave signal, it is high The first logical states of level representative, low level represent the second logical states.

When the first hall signal SH1 is in the first logical states, the 3rd end C is connected with the second switch terminal B and with described the One switch terminal A disconnect, when the first hall signal SH1 be in the second logical states, the 3rd end C with the first switch terminal A connect and together The second switch terminal B is disconnected, wherein, the first hall signal SH1 is at the first Hall switch（That is induction zone 1）Without external magnetic field When in the second logical states, the magnetic field intensity at the first Hall switch jumps to the first logical states when being more than a first threshold.

When the first hall signal SH1 is located at the first logical states, signal transmission module 103 is worked in the first frequency range, when When first hall signal SH1 is located at the second logical states, 104 setting signal transport module 103 of logic processing module works in second In frequency range.

For imaging terminal, in the attachment access containing external antenna, the magnetism that attachment has in itself generates component, Such as magnet, a stronger magnetic field can be formed in the first sensing zone position so that the magnetic field at the first Hall switch H1 is big In threshold value, the first hall signal is in the first logical states.At this point, antenna-switching device 102 by signal transmitting and receiving module 103 with external Antennal interface is connected, and external antenna interface is connected with the external antenna on attachment, simultaneously switches off signal receiving module 103 with built-in The connection of antenna.

When signal transmitting and receiving module 103 is connected with built-in aerial, external antenna interface is not formed with signal transmitting and receiving module 103 Access, and when signal transmitting and receiving module 103 by external antenna interface connect external antenna when, built-in aerial not with signal transmitting and receiving mould Block 103 forms access, avoids work of the antenna effect of imaging terminal internal wiring generation to built-in aerial and external antenna Form crosstalk.

Since external antenna usually possesses better low frequency signal gain than built-in aerial, contain the attached of external antenna When part accesses, the frequency of the first frequency range is less than the frequency of the second frequency range, for example, the first frequency range can be 700MHz frequency ranges, 800MHz frequency ranges or 850MHz frequency ranges, the second frequency range can be 1800MHz frequency ranges, 1900MHz frequency ranges, 2100MHz frequency ranges or 2600MHz frequency ranges.

Signal transmission module 103 can be RF transceiver.In one embodiment, RF transceiver has automatic frequency sweep Function can automatically select suitable transmitting-receiving frequency according to the situation of change of antenna.For example, height may be employed in RF transceiver It is logicalCompany WTR1605 or WTR5975 are realized.

In another embodiment, RF transceiver may not have can be with automatic frequency sweep function, at this time, it may be necessary to pass through outside Module is configured working frequency range, and mode-changeover device 101 further includes logic processing module 104, is connected to RF transceiver The 103 and first Hall switch H1, when the first hall signal SH1 is located at the first logical states, logic processing module 104 sets described RF transceiver is worked in the first frequency range, when the first hall signal SH1 is located at the second logical states, logic processing module 104 RF transceiver 103 is set to work in the second frequency range.

Logic processing module 104 can be made of multiple logic gates.In one embodiment, logic processing module 104 can be connected to RF transceiver by a bus, and according to the first hall signal SH1, one group two is provided to RF transceiver 103 System number indicates current working band.Such as when the first hall signal SH1 is the first logical states, logic processing module is defeated The binary number gone out is 0700, prompts RF transceiver that should be operated in 700MHz, when the first hall signal is the second logical states, The binary number of logic processing module output is 2600, prompts RF transceiver that should be operated in 2600MHz.To having in the art For common horizontal technical staff, can appreciate that can be by the species of a variety of Common Logical gate circuits（Such as With door, NOT gate, OR gate etc.）With different connection relations, above-mentioned output is realized.Set logic gates species and between Connection relation belongs to common sense and conventional technical means well known in the art with the output for realizing above-mentioned binary number, needs not move through Creative work can be realized, therefore details are not described herein again.

In another embodiment, logic processing module 104 can also be made of processor and memory, and processor is connected to RF transceiver and the first Hall switch perform the program being stored in memory.

For example, program is operationally, when the first hall signal SH1 is the first logical states, 103 work of RF transceiver is controlled Make in one first frequency range, such as 700Mhz, when the first hall signal SH1 is the second logical states, control 103 work of RF transceiver Make in one second frequency range, such as 2600Mhz.

In another embodiment, logic processing module 104 can be made of processor and memory, and processor, which is connected to, to be penetrated Frequency transceiver performs the program being stored in memory.Operationally, control RF transceiver 103 carries out frequency sweep to program, according to The signal strength condition for each frequency range that frequency sweep obtains determines the transmitting-receiving frequency of RF transceiver.

In certain embodiments, imaging terminal 100 further includes one second Hall switch H2, is arranged at the second induction zone 2, this When, mode-changeover device 101 further includes：Touch input module 105, for receiving operation from the user and being converted to telecommunications Number.

Logic processing module 104 may be connected to 105 and second Hall switch H2 of touch input module.Logic processing module 104 further receive the second hall signal SH2 of the second Hall switch H2 outputs, when the second hall signal SH2 is the first logic During state, logic processing module 104 closes touch input module 105, when the second hall signal SH2 is the second logical states, logic Processing module 104 opens touch input module 105, and the second hall signal SH2 is at the second Hall switch H2（That is the second induction zone 2）In the second logical states during no external magnetic field, the magnetic field intensity at first Hall switch is jumped when being more than a second threshold Change to the first logical states.To perform above-mentioned logic, logic processing module 104 equally may be employed logic gates and realize above-mentioned work( Can or using processor（Such as central processor CPU）And memory（Such as non-volatile readable memory write）, pass through processing Device execution is stored in the program in memory.No matter logic processing module 104 is formed in the form of logic gates combination, also It is to be formed in the form of processor and memory perform storage program, those skilled in the art can be according to ability Common knowledge and conventional techniques in domain, it is correct that logic processing module 104 is set to realize aforesaid operations changing interface function, Therefore no longer it is described in detail herein.Second hall signal H2 or a square wave, high level represent the first logical states, and low level represents Second logical states.

Touch input module 105 can be touch-screen or touch output board etc..

In one embodiment, the frame material of the first induction zone 1 and the second induction zone 2 is paramagnetic material, such as aluminium, Tin etc., can be to sensing and strengthening external magnetic field.Also, the first induction zone 1 and the second induction zone 2 are the same as the frame material of peripheral region Matter is different, and the material of peripheral region usually selects the material insensitive to external magnetic field, such as engineering plastics.

In this way, when correspondence position includes the Add-on accessories access of field generating component, the first induction zone and the second sensing Area's attachment can generate sufficiently strong magnetic field, it is ensured that the first hall signal SH1 and the second hall signal SH2 can be generated correctly Logical states.Meanwhile the material insensitive to external magnetic field is selected in peripheral region, can avoid generating excessive complementary field interference The normal operation of circuit and the normal of signal send and receive in imaging terminal 100.

Further, in the present embodiment, outer framework surface further includes power contact 3, for accessing external dorsal clamp type Battery package is as supply port.

Outer framework surface has further included live streaming key 106, power key 107 and shutter key 108 in one embodiment, wherein directly Broadcasting key 106 being capable of key initiation internet video live broadcasting in pressing.

Fig. 3 shows the work shape of the imaging terminal comprising Add-on accessories of another embodiment according to the present utility model State, wherein, Add-on accessories include：

Adjunct Framework 301 posts and fixes installation, attachment frame at least part frame surface topography with imaging terminal At least one field regions are provided on frame；

Field generating component 302 sets field regions, in the operating condition, being produced in the corresponding induction zone of imaging terminal A raw magnetic field, so that the hall signal that imaging terminal is located at the output of the Hall sensor of sensing zone position is located at the first logic State；

Add-on assemble 303 is arranged on the Adjunct Framework, is connected with the external interface of imaging terminal, for for described in Imaging terminal provides additional function.

Wherein, Adjunct Framework 301 can set an attachment support construction with self-magnetic field area, for housing field generating component 302.Field generating component 302 can also directly paste or one-pass molding in do not depended on Adjunct Framework 301 it is any support knot Structure.

The Add-on accessories for illustrating embodiment are the waterproof cover of imaging terminal, however, in other embodiments, Add-on accessories Can be other types, such as dorsal clamp type battery or bracket antenna.As shown, waterproof cover has external antenna as add-on assemble 303, similar, dorsal clamp type battery can also have external antenna.Wherein, bracket antenna and waterproof cover and the back of the body with external antenna Clip battery is being provided with the first field generating component 4 with the opposite position of the first induction zone 1 accordingly, in working condition Under, the first hall signal SH1 is placed in the first logical states.Similar, waterproof cover and dorsal clamp type battery connect with the second induction zone 2 It touches or opposite position is provided with the second field generating component 5, in the operating condition, the second hall signal SH2 to be placed in First logical states.First field generating component 4 and the second field generating component 5 collectively form field generating component 302.First magnetic The material that field generates 4 and second field generating component 5 of component can be magnet or other materials that can generate magnetic field.Wherein, In one embodiment, except with attachment support construction be connected in addition to, field generating component 302 in the operating condition not with it is described external The other parts of attachment or imaging terminal contact.In another embodiment, field generating component 302 connects in the operating condition Contact the induction zone of imaging terminal outer framework.Dorsal clamp type battery is in the position setting corresponding to camera frame surface power contact 3 There is power supply contact, power for being docked with power contact 3.

Following table show the corresponding switch service condition of different types of Add-on accessories.

	Power contact 3	First Hall switch	Second Hall switch
				Back splint battery	✔		✔
Back splint battery+antenna	✔	✔	✔
				Waterproof cover			✔
Waterproof cover+antenna		✔	✔
				Bracket antenna		✔

Continue as shown in figure 3, in the Add-on accessories access with external antenna, because Add-on accessories are in corresponding firstth area Position have magnet, at this time the first Hall switch sense that external magnetic field strength reaches threshold value, the first hall signal SH1 is placed in First logical states, prompt the attachment with external antenna to access imaging terminal, and duplexer disconnects the company with built-in aerial It connects, only receives the signal from external antenna.

Meanwhile when the second Hall switch senses that external magnetic field strength reaches threshold value, the second hall signal SH2 is placed in One logical states, i.e., the attachment that prompting has the function of waterproof shield have accessed imaging terminal, and user can not continue through at this time As the original operation and control interface of terminal（Such as touch-screen or the button without water-proof function）, and need through the manipulation button on attachment It is manipulated.Logic processing module 104 is switched to waterproof cover manipulation mould when receiving the second hall signal SH2, by steer mode Formula closes original operation and control interface not applied under waterproof cover steer mode（Such as touch-screen）It prevents caused by attachment releases Maloperation.

When external attachment include dorsal clamp type battery when, power contact 3 is docked with power supply contact, realization dorsal clamp type battery into As terminal is powered.

In the present embodiment, external waterproof cover attachment further includes live streaming key 6, power key 7 and shutter key 8, is to have to prevent Water functional machinery button is respectively arranged at the position of the corresponding live streaming key 106 of imaging terminal, power key 107 and shutter key 108 It puts.When accessing waterproof cover, user presses the mechanical button on waterproof cover attachment, can trigger the corresponding button on imaging terminal, So as in the case where Add-on accessories do not have any circuit, realize the control to imaging terminal.

Due in addition to antenna, the Add-on accessories of imaging terminal do not include any active circuit, and in part, use environment is for example Under water, system reliability is effectively increased.

In addition, when accessing the Add-on accessories such as waterproof cover containing antenna, it is more severe usually using environment, such as position In field or underwater, imaging terminal automatically switches to external antenna at this time, be conducive to send and receive covering power and penetration power compared with Strong frequency band signals（Such as 700MHz, 800MHz), and when not accessing Add-on accessories, in the case of use environment is preferable, example Such as it is located at indoor or urban area, imaging terminal and automatically switches to built-in aerial, is conducive to send and receive common indoor frequency Segment signal（Such as 1800MHz, 2600MHz）.

Further, in one embodiment, as shown in figure 4, the Hall switch include Hall sensor Hall1 and Hysteresis comparator COMP1；The input terminal sensing external magnetic field strength of Hall sensor Hall1, the output of Hall sensor Hall1 End is connected with hysteresis comparator COMP1；The output terminal output hall signal of hysteresis comparator COMP1.Pass through the stagnant ring of reasonable set The hysteresis band of comparator COMP1, the Hall voltage that hysteresis comparator COMP1 can be exported Hall sensor Hall 1 reach To high level signal is just exported during a higher threshold value, it can so be located to avoid when camera in complex electromagnetic environment, be subject to Environmental magnetic field disturbs the false triggering for causing the first Hall switch.

And further, in the present embodiment, the Hall switch further includes time delay module TD and AND gate circuit AND2；The input terminal of time delay module TD and the first input end of AND gate circuit AND2 are received from hysteresis comparator COMP1's The hall signal of output terminal output, the output terminal of time delay module TD are connected with the second input terminal of AND gate circuit AND2, with door electricity The hall signal of the output terminal output of road AND2 after treatment.By the delay time of reasonable set TD, first can be made suddenly The ability that your switch and the second Hall switch are disturbed with anti-moment high-intensity magnetic field.

Further, in another embodiment, as shown in figure 5, the Hall switch includes Hall sensor battle array Row；The Hall sensor array include three Hall sensors Hall1, Hall2 and Hall3, Hall sensor Hall1, The output terminal of Hall2 and Hall3 is connected respectively with three hysteresis comparators COMP1, COMP2 and COMP3, hysteresis comparator The output terminal of COMP1 is connected with phase inverter INV, and the output terminal of phase inverter INV is connected with the first input end of AND gate circuit AND1, The output terminal of hysteresis comparator COMP2 and COMP3 are connected respectively with the second input terminal of AND gate circuit AND1 and the 3rd input terminal, The output terminal output hall signal of AND gate circuit AND1；The stagnant loop voltag of three hysteresis comparators COMP1, COMP2 and COMP3 point It Wei not V1, V2 and V3.Three hysteresis comparators COMP1, COMP2 are different with the stagnant loop voltag width of COMP3, in diagram embodiment In, V2>V1>V3；

Wherein, as shown in fig. 6, Hall sensor Hall1 and Hall3 are respectively in Hall sensor Hall2 both sides, accessing Add-on accessories in field generating component induction zone generate magnetic field when, Hall sensor Hall2 is located at magnetic field center position, Hall sensor Hall1 and Hall3 are located in same equipotential surface.

When it is high level that Add-on accessories magnetic field intensity, which is enough to jump 2 corresponding hysteresis comparators of Hall, it is necessary to make position Hall voltage intensity could exist respectively between V1 and V3 caused by magnetic equipotential face at the Hall 1 and Hall 3 Low level is triggered on COMP1, high level is triggered on COMP3.So that AND1 exports high level.In this way, even if imaging terminal is set to Near other kicker magnets, since other kicker magnets are difficult to form satisfactory magnetic equipotential face at Hall 1 and Hall 3, Therefore imaging terminal will not be mistakenly considered Add-on accessories access, further improve antijamming capability.

The above is only the preferred embodiment of the utility model, it should be understood that the utility model is not limited to herein Disclosed form is not to be taken as the exclusion to other embodiment, and available for various other combinations, modification and environment, and It can be modified in contemplated scope described herein by the technology or knowledge of above-mentioned introduction or association area.And this field The modifications and changes that personnel are carried out do not depart from the spirit and scope of the utility model, then all should be in right appended by the utility model It is required that protection domain in.

Claims (7)

1. a kind of imaging terminal, it is characterised in that：Including：

Outer framework is provided at least one induction zone on the outer framework；

First Hall switch is arranged at the first induction zone（1）, for sensing the changes of magnetic field at induction zone and exporting the first Hall Signal；

Mode-changeover device, for the hall signal from Hall switch that basis receives, to the operating mode of imaging terminal It switches over

Wherein, the mode-changeover device includes：

Built-in aerial, for sending and receiving signal；

External antenna interface, for being attached with external antenna；

Antenna-switching device, the first switch terminal and the second switch terminal, the 3rd end and control terminal, wherein the first switch terminal is connected to institute Built-in aerial is stated, the second switch terminal is connected to the external antenna interface, and the 3rd end controls to be connected to a signal transmission module End is connected with first Hall switch, receives first hall signal；

Wherein, when the magnetic field intensity at first Hall switch is more than a first threshold, the first hall signal saltus step To the first logical states, when first hall signal is in the first logical states, the 3rd end connects with second switch terminal It is logical and disconnected with first switch terminal, first hall signal at first Hall switch without external magnetic field when be in Second logical states, when first hall signal is in the second logical states, the 3rd end is connected with first switch terminal And it is disconnected with second switch terminal.

2. a kind of imaging terminal according to claim 1, it is characterised in that：The imaging terminal further includes one second Hall Switch, is arranged at the second induction zone（2）, the mode-changeover device further includes：

Touch input module, for receiving operation from the user and being converted to electric signal；

Logic processing module is connected to the touch input module and second Hall switch, wherein, the logical process Module receives the second hall signal of the second Hall switch output, described when second Hall switch is the first logical states Logic processing module closes the touch input module, when second Hall switch is the second logical states, at the logic Manage module and open the touch input module, second hall signal at second Hall switch without external magnetic field when at In the second logical states, the magnetic field intensity at first Hall switch jumps to the first logical states when being more than a second threshold.

A kind of 3. imaging terminal according to claim 1 to 2 any claim, which is characterized in that first sensing Area（1）With the second induction zone（2）Frame material for paramagnetic material, it is and different with the frame material of peripheral region.

4. a kind of imaging terminal according to claim 1, it is characterised in that：Power supply is additionally provided on the outer framework to touch Point（3）, for providing supply port to external power supply.

5. a kind of imaging terminal according to claim 1, it is characterised in that：Each Hall switch includes first suddenly That sensor and hysteresis comparator；The two poles of the earth of first Hall sensor and two input terminals of hysteresis comparator connect；Stagnant ring ratio Output terminal compared with device exports the hall signal.

6. a kind of imaging terminal according to claim 1, it is characterised in that：Each Hall switch includes a Hall Sensor array；The Hall sensor array includes the first Hall sensor, and the second Hall sensor and the 3rd Hall pass Sensor, the two poles of the earth of the first Hall sensor, the second Hall sensor and the 3rd Hall sensor are connected respectively and first Two input terminals of hysteresis comparator, the second hysteresis comparator and the 3rd hysteresis comparator, the output terminal of the first hysteresis comparator with One phase inverter connection, the output terminal of the phase inverter are connected with the first input end of the first AND gate circuit, and the second stagnant ring compares The output terminal of device and the second hysteresis comparator is connected respectively with the second input terminal of the first AND gate circuit and the 3rd input terminal, and first The output terminal output hall signal of AND gate circuit；First hysteresis comparator, the second hysteresis comparator and the 3rd hysteresis comparator Stagnant loop voltag width is different；

Wherein, the first Hall sensor and the 3rd Hall sensor are respectively in the second Hall sensor Hall sensor both sides, institute The first Hall sensor is stated, the second Hall sensor and the 3rd Hall sensor can be monopole hall effect sensor or full pole Hall effect sensor.

7. a kind of imaging terminal according to claim 4 or 5, it is characterised in that：The Hall switch further includes delay The first input end of module and the second AND gate circuit, the input terminal of the time delay module and second AND gate circuit receives institute Hall signal is stated, the output terminal of the time delay module is connected with the second input terminal of second AND gate circuit, described electric with door The hall signal of the output terminal output on road after treatment.