CN209417307U - A kind of wireless locating module and positioning system - Google Patents
A kind of wireless locating module and positioning system Download PDFInfo
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- CN209417307U CN209417307U CN201821996069.4U CN201821996069U CN209417307U CN 209417307 U CN209417307 U CN 209417307U CN 201821996069 U CN201821996069 U CN 201821996069U CN 209417307 U CN209417307 U CN 209417307U
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- locating module
- radiofrequency signal
- wireless locating
- signal processing
- antenna
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Abstract
The utility model relates to wireless location technology field, a kind of wireless locating module and positioning system are disclosed.The wireless locating module includes: passive antenna, radiofrequency signal processing unit and main control chip；The signal transmission end of the passive antenna is electrically connected with the input terminal of the radiofrequency signal processing unit, and the output end of the radiofrequency signal processing unit is connect with the signal input part of the main control chip；The passive antenna receives the radiofrequency signal of default wave band, and by the radio signal transmission to the radiofrequency signal processing unit, the radiofrequency signal processing unit carries out signal processing to the radiofrequency signal, by by the radio signal transmission of the signal processing, to the main control chip, the main control chip parses the radiofrequency signal of the signal processing.In the utility model, so that wireless locating module realizes the reception to radiofrequency signal in the case where not needing external antenna, meet user to the volume requirement of wireless locating module.
Description
Technical field
The utility model relates to wireless location technology field, in particular to a kind of wireless locating module and positioning system.
Background technique
Traditional wireless locating module for receive single global positioning system (Global Positioning System,
GPS) or the positioning signal of dual-satellite system, wireless locating module can realize positioning or navigation, need to receive satellite positioning signal,
It thus receives signal and just necessarily uses antenna.
At least there are the following problems in the prior art for inventor's discovery: existing wireless locating module is largely without day
Line, in order to meet work requirements, need to be designed on embedded printed circuit board (Printed Circuit Board, PCB)
Antenna-matching circuit, external active or passive antenna realize receive capabilities.The useful signal that antenna receives passes through antenna
It may be subjected to the Conduction Interference or radiation interference of other circuits on PCB when with circuit, to will affect the signal of locating module
Quality causes the positioning accuracy deviation of wireless locating module larger, position inaccurate, even searches when serious interference and believes less than satellite
Number.The biggish ceramic antenna of volume is generally arranged in locating module with antenna, and antenna is arranged in the screen of wireless locating module
It covers on cover, so that the height of module increases, overall volume is larger.It is unfavorable for being embedded on PCB higher to volume requirement.
It should be noted that information is only used for reinforcing the reason to the background of the disclosure disclosed in above-mentioned background technology part
Solution, therefore may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Utility model content
The purpose of this utility model is to provide a kind of wireless locating module and positioning systems, so that wireless locating module exists
It does not need to realize the reception to radiofrequency signal in the case where external antenna, meets user to the volume requirement of wireless locating module.
In order to solve the above technical problems, the embodiments of the present invention provides a kind of wireless locating module, comprising: nothing
Source antenna, radiofrequency signal processing unit and main control chip；
The signal transmission end of passive antenna is electrically connected with the input terminal of radiofrequency signal processing unit, radiofrequency signal processing unit
Output end and main control chip signal input part connect；
Passive antenna receives the radiofrequency signal of default wave band, and by radio signal transmission to radiofrequency signal processing unit, penetrates
Audio signalprocessing unit carries out signal processing to radiofrequency signal, by by the radio signal transmission of signal processing to main control chip,
Main control chip parses the radiofrequency signal of signal processing.
The embodiments of the present invention additionally provides a kind of positioning system, including the wireless location in above embodiment
Module.
In terms of existing technologies, passive antenna is arranged in the utility model embodiment in wireless locating module, pass through
Passive antenna receives radiofrequency signal, and passive antenna is integrated in the inside of wireless locating module, antenna cabling when avoiding external antenna
Interference is generated to the circuit in wireless locating module, due to only including antenna device in passive antenna, so that the body of passive antenna
Product confronting active antenna volume is small, so that the volume of wireless locating module is also smaller, so that wireless locating module is being not required to
Also it can be realized the reception to radiofrequency signal in the case where connecting external antenna, user can also be met to wireless location mould
The volume requirement of block.
In addition, radiofrequency signal processing unit includes first filter, second filter and amplifying circuit；
The input terminal of first filter is as the input terminal of radiofrequency signal processing unit and the signal transmission end of passive antenna
The input terminal of connection, the output end of first filter and amplifying circuit connects, the output end of amplifying circuit and second filter
The output end of input terminal connection, second filter is connected as the output end of passive antenna and the signal input part of main control chip.
In the embodiment, amplifying circuit, first filter and second filter in wireless locating module be can satisfy
Pretreatment to radiofrequency signal effectively reduces the volume of wireless locating module.
In addition, passive antenna includes antenna feed point and feedback place；Passive antenna is handled by antenna feed point and radiofrequency signal
Circuit connection, feedback place is for being grounded.
In the embodiment, setting antenna feed point is convenient to transmit radiofrequency signal, improves the effect of radio signal transmission
Rate.
In addition, passive antenna is the ceramic structure that surface covers metal foil.
In addition, metal foil includes the first metal foil and the second metal foil；First metal foil is connect with antenna feed point, the second gold medal
Belong to foil to connect with feedback place.
In addition, the distance between the first metal foil and the second metal foil value are pre-determined distance value, passive antenna passes through first
Metal foil and the second metal foil are coupled to receive radiofrequency signal.
In the embodiment, surface covers the ceramic structure of metal foil as passive antenna, and it is wireless fixed to effectively reduce
The cost of position module, the first metal foil and the second metal foil are coupled to receive signal, convenient for control passive antenna to default wave band
Radiofrequency signal is received.
In addition, wireless locating module further includes external antenna interface；External antenna interface is for connecting external antenna.
In the embodiment, in order to guarantee that the application demand of wireless locating module, external antenna interface is arranged in user,
It connects suitable external antenna as needed convenient for user, improves the application scenarios of wireless locating module.
In addition, main control chip further includes Power Management Unit；Power Management Unit provides power supply for wireless locating module.
In addition, the size of passive antenna are as follows: 3.2mm x 1.6mm x 1.1mm.
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element, remove
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is the structure chart of wireless locating module in the utility model first embodiment；
Fig. 2 is the structure chart of another wireless locating module in the utility model first embodiment；
Fig. 3 is the structure chart of another wireless locating module in the utility model first embodiment.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Each embodiment of type is explained in detail.However, it will be understood by those skilled in the art that each in the utility model
In embodiment, in order to make the reader understand this application better, many technical details are proposed.But even if without these skills
The required guarantor of each claim of the application also may be implemented in art details and various changes and modifications based on the following respective embodiments
The technical solution of shield.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.
The first embodiment of the utility model is related to a kind of wireless locating module.Its structure is as shown in Figure 1, include passive
Antenna 10, radiofrequency signal processing unit 20 and main control chip 30.
The signal transmission end of passive antenna 10 is electrically connected with the input terminal of radiofrequency signal processing unit 20, radiofrequency signal processing
The output end of unit 20 is connect with the signal input part of main control chip 30.
Passive antenna 10 receives the radiofrequency signal of default wave band, and by radio signal transmission to radiofrequency signal processing unit
20, radiofrequency signal processing unit 20 carries out signal processing to radiofrequency signal, will be by the radio signal transmission of signal processing to master
Chip 30 is controlled, main control chip 30 parses the radiofrequency signal of signal processing.
Wherein, the radiofrequency signal that radiofrequency signal processing unit 20 is used to obtain passive antenna 10 carries out signal processing, packet
Filtering processing and enhanced processing are included, master control chip 30 is made directly can to carry out dissection process to the radiofrequency signal after signal processing.
In radiofrequency signal for presetting wave band, which can support to obtain a variety of satellite positioning informations, and e.g., support is defended
Star system includes but is not limited to GPS, GLONASS (Global Navigation Satellite System, abbreviation: " Ge Luo
Na Si "), BeiDou (big-dipper satellite), Galileo (Galilean satellite) and QZSS (Quasi-Zenith Satellite
System, quasi- zenith satellite system) etc. satellite systems.One in the specific implementation, be provided with the positioning system of the wireless locating module
System can support that three satellite systems are positioned under scheduled setting simultaneously, such as GPS, GLONASS and Galileo.
It should be noted that the wireless locating module in present embodiment is due to being provided with passive antenna 10, the passive day
Line 10 is integrated in the inside of wireless locating module, and the small volume of passive antenna 10, solves wireless locating module and carries day
Line volume is big, or the problem of without included antenna, can satisfy user and positioned by wireless locating module.It below will be to this reality
The wireless locating module applied in mode is specifically described, and content below is merely for convenience to be understood the application and provide
Specific implementation details not constitute the limitation to the application.
Specifically, after the radiofrequency signal that wireless locating module mainly makes user obtain position location satellite transmission, radio frequency letter
Number processing unit 20 is filtered to radiofrequency signal and enhanced processing, and one in the specific implementation, radiofrequency signal processing unit
20 include first filter 21, amplifying circuit 22 and second filter 23；Device circuit structure is as shown in Fig. 2, specifically, the first filter
The input terminal of wave device 21 is connect as the input terminal of radiofrequency signal processing unit with the signal transmission end of passive antenna 10, and first
The output end of filter 21 is connect with the input terminal of amplifying circuit 22, and the output end of amplifying circuit 22 is defeated with second filter 23
Enter end connection, the output end of second filter connects as the output end of passive antenna 10 and the signal input part of main control chip 30
It connects.
Wherein, only provide the example of radiofrequency signal processing unit 20 a kind of in diagram 2, the specific number that filter is set and
The specific structure of amplifying circuit is not particularly limited herein, can be selected according to component original in wireless locating module,
Or suitable radiofrequency signal processing unit 20 can also be set as needed, it is only example herein, is not specifically limited.
Specifically, adding passive antenna 10 in wireless locating module, meets wireless locating module and receive radiofrequency signal
Demand, wherein the volume of passive antenna 10 can be set according to specific demand, one in the specific implementation, passive antenna 10 ruler
It is very little are as follows: 3.2mm x 1.6mm x 1.1mm is herein only citing, and the passive antenna 10 of this size is in wireless locating module
Relative volume indicate as shown in figure 3, setting passive antenna 10 wireless locating module it is small in size.
One in the specific implementation, setting passive antenna 10 wireless locating module be applied to positioning system when, it is strong in signal
In the case that degree is -130dBm decibel milliwatt, thermal starting primary positioning time only needs 1S, and startup temperature primary positioning time is less than
30S, cold start-up primary positioning time are less than 35S.If possessing advanced AGPS (Assisted Global in the system
Positioning System, auxiliary global satellite positioning system) orbital prediction technology, thermal starting is first after which opens
Secondary positioning time 1S, startup temperature primary positioning time are less than 5S, and cold start-up primary positioning time is less than 15S, wherein AGPS technology
It can calculate and predict automatically the orbit information up to three days, and these information are stored to internal storage (RAM, Random
Access Memory) in, can realize fast positioning it also in weak signal.
Wherein, above-mentioned starting is to be applied to the specific situation in GPS in wireless locating module, and cold start-up refers to one
Start GPS under a strange environment until GPS and the connection of surrounding satellite and the start-up course for calculating coordinate；Startup temperature refers to
It was more than the starting of 2 hours apart from positioning time last time, searches star positioning time between cold start-up and thermal starting；Thermal starting is
Refer in the place that last time shuts down without excessively mobile starting GPS, but be necessarily less than 2 hours apart from positioning time last time, passes through
The mode of software, the starting after the preparations such as preservation and closing before carrying out some startings.
It is used for transmission specifically, passive antenna 10 obtains radiofrequency signal to radiofrequency signal processing unit 20, one specific
In realization, passive antenna 10 includes antenna feed point and feedback place；Passive antenna 10 passes through antenna feed point and radiofrequency signal processing electricity
Road connection, feedback place is for being grounded.Wherein, antenna feed point and feedback place can be metal clips or other structures, be only herein
Citing is not particularly limited particularly for the setting position and selection material in antenna feed point and feedback place.
It should be noted that the above is only limit for example, not constituting to technical solution of the present invention.
In terms of existing technologies, passive antenna is set in wireless locating module, radio frequency letter is received by passive antenna
Number, passive antenna is integrated in the inside of wireless locating module, avoids antenna cabling from generating the circuit in wireless locating module dry
It disturbs, due to only including antenna device in passive antenna, so that the volume confronting active antenna volume of passive antenna is small, so that
The volume of wireless locating module is also smaller, so that wireless locating module also can be real in the case where not needing connection external antenna
Now to the reception of radiofrequency signal, user can also be met to the volume requirement of wireless locating module.
The second embodiment of the utility model is related to a kind of wireless locating module.Second embodiment and the first embodiment party
Formula is roughly the same, is in place of the main distinction: in the second embodiment of the utility model, specifically illustrating passive antenna 10
Specific structure and passive antenna 10 working method.
In wireless locating module in present embodiment, passive antenna 10 is the ceramic structure that surface covers metal foil,
Metal foil includes the first metal foil and the second metal foil；First metal foil is connect with antenna feed point, the second metal foil and feedback place
Connection.Specifically, the distance between the first metal foil and the second metal foil value are pre-determined distance value, passive antenna 10 passes through the
One metal foil and the second metal foil are coupled to receive radiofrequency signal.
It should be noted that being only that one kind is specifically shown for the explanation of the specific structure of passive antenna 10 in present embodiment
Example, the pre-determined distance value between the first metal foil and the second metal foil can independently be set according to design requirement of the user to antenna,
Specifically with no restriction, wherein passive antenna 10 is coupled to receive between the first metal foil and the second metal foil by setting
Radiofrequency signal.
Specifically, in order to guarantee that wireless locating module can satisfy a variety of demands of user, in wireless locating module
In be provided with external antenna interface, specifically, external antenna interface is for connecting external antenna.Wherein, in wireless locating module
Middle setting passive antenna 10 enables wireless locating module to receive radiofrequency signal, while external antenna interface is arranged and meets use
A variety of requirements of person and the design of positioning system.
It should be noted that if being because internal antenna is not able to satisfy the demand of user, user selects external antenna
It works, then internal antenna is no longer by received radio signal transmission to radiofrequency signal processing unit 20, wherein internal antenna
With external antenna alternative.
Specifically, main control chip further includes Power Management Unit；Power Management Unit provides electricity for wireless locating module
Source.It wherein, further include processor, radio frequency in wireless locating module in order to which the structure and function for guaranteeing wireless locating module is complete
Circuit units, the external interfaces such as circuit, onboard flash memory device include power supply interface, instruction interface etc..Specifically, instruction interface packet
It includes but is not limited to 3D positioning, Interference Detection and virtual electronic fence.
It is noted that each module involved in present embodiment is physical module, in the specific implementation, the object
Reason module can be a circuit unit, be also possible to be made of realization multiple physical units, furthermore it is also possible to be logic mould
Block forms corresponding circuit unit, in addition, in order to protrude innovative part of the invention, it will not be with solution in present embodiment
The less close unit of technical problem relationship proposed by the invention introduces, but this does not indicate that there is no it in present embodiment
Its unit.
The utility model third embodiment is related to a kind of positioning system, including in above-mentioned first or second embodiment
Wireless locating module.
One in the specific implementation, be arranged power conservation techniques in the positioning system, so that positioning system can be according to different rings
Border situation and operational mode select positioning method appropriate, and it is wirelessly fixed in positioning system to reduce while ensuring positioning accuracy
The power consumption of position module, effectively extend positioning system uses the time.
Specifically, the positioning system can be in the positioning device being arranged on automobile, can also be applied to industry or
In other electric consumers, specifically without limitation, the application in present embodiment has nothing in first or second embodiment
The positioning system power consumption of line locating module is lower, and wireless locating module is small in size, so that the volume of positioning system accordingly reduces,
And then it is easy to carry.
It should be noted that present embodiment is the embodiment of system corresponding with first or second embodiment, because
This present embodiment can work in coordination implementation with first or second embodiment.The correlation mentioned in first or second embodiment
Technical detail is still effective in the present embodiment, and the attainable technical effect of institute is in this reality in first or second embodiment
Applying in mode similarly may be implemented, and in order to reduce repetition, which is not described herein again.Correspondingly, the phase mentioned in present embodiment
Technical detail is closed to be also applicable in first or second embodiment.
It will be understood by those skilled in the art that the respective embodiments described above are to realize the specific implementation of the utility model
Example, and in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit of the utility model
And range.
Claims (10)
1. a kind of wireless locating module characterized by comprising passive antenna, radiofrequency signal processing unit and main control chip；
The signal transmission end of the passive antenna is electrically connected with the input terminal of the radiofrequency signal processing unit, the radiofrequency signal
The output end of processing unit is connect with the signal input part of the main control chip；
The passive antenna receives the radiofrequency signal of default wave band, and the radio signal transmission to the radiofrequency signal is handled
Unit, the radiofrequency signal processing unit carry out signal processing to the radiofrequency signal, will be by the radio frequency of the signal processing
Signal is transmitted to the main control chip, and the main control chip parses the radiofrequency signal of the signal processing.
2. wireless locating module according to claim 1, which is characterized in that the radiofrequency signal processing unit includes first
Filter, second filter and amplifying circuit；
The input terminal of the first filter is as the input terminal of the radiofrequency signal processing unit and the letter of the passive antenna
The connection of number transmission end, the output end of the first filter are connect with the input terminal of the amplifying circuit, the amplifying circuit
Output end is connect with the input terminal of the second filter, and the output end of the second filter is as the defeated of the passive antenna
Outlet is connect with the signal input part of the main control chip.
3. wireless locating module described in any one of -2 according to claim 1, which is characterized in that the passive antenna includes day
Line feed point and feedback place；
The passive antenna is connect by the antenna feed point with the radio frequency signal processing circuit, and the feedback place is for connecing
Ground.
4. wireless locating module according to claim 3, which is characterized in that the passive antenna is that surface covers metal foil
Ceramic structure.
5. wireless locating module according to claim 4, which is characterized in that the metal foil includes the first metal foil and the
Two metal foils；
First metal foil is connect with the antenna feed point, and second metal foil is connect with the feedback place.
6. wireless locating module according to claim 5, which is characterized in that first metal foil and second metal
The distance between foil value is pre-determined distance value, the coupling that the passive antenna passes through first metal foil and second metal foil
Splice grafting receives the radiofrequency signal.
7. -2 described in any item wireless locating modules according to claim 1, which is characterized in that the wireless locating module is also wrapped
Include external antenna interface；
The external antenna interface is for connecting external antenna.
8. -2 described in any item wireless locating modules according to claim 1, which is characterized in that the main control chip includes power supply
Administrative unit；
The Power Management Unit provides power supply for the wireless locating module.
9. wireless locating module according to claim 5, which is characterized in that the size of the passive antenna are as follows: 3.2mm x
1.6mm x 1.1mm。
10. a kind of positioning system, which is characterized in that including such as described in any item wireless locating modules of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821996069.4U CN209417307U (en) | 2018-11-30 | 2018-11-30 | A kind of wireless locating module and positioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821996069.4U CN209417307U (en) | 2018-11-30 | 2018-11-30 | A kind of wireless locating module and positioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209417307U true CN209417307U (en) | 2019-09-20 |
Family
ID=67935859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821996069.4U Active CN209417307U (en) | 2018-11-30 | 2018-11-30 | A kind of wireless locating module and positioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209417307U (en) |
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2018
- 2018-11-30 CN CN201821996069.4U patent/CN209417307U/en active Active
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