CN106842264A - Based on Android platform can seamless positioning system and localization method inside and outside communication room - Google Patents
Based on Android platform can seamless positioning system and localization method inside and outside communication room Download PDFInfo
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- CN106842264A CN106842264A CN201710082642.4A CN201710082642A CN106842264A CN 106842264 A CN106842264 A CN 106842264A CN 201710082642 A CN201710082642 A CN 201710082642A CN 106842264 A CN106842264 A CN 106842264A
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- 238000006243 chemical reaction Methods 0.000 claims description 10
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- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 abstract description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
- G01S19/421—Determining position by combining or switching between position solutions or signals derived from different satellite radio beacon positioning systems; by combining or switching between position solutions or signals derived from different modes of operation in a single system
- G01S19/425—Determining position by combining or switching between position solutions or signals derived from different satellite radio beacon positioning systems; by combining or switching between position solutions or signals derived from different modes of operation in a single system by combining or switching between signals derived from different satellite radio beacon positioning systems
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Abstract
The invention discloses based on Android platform can seamless positioning system and localization method inside and outside communication room, control platform sets up data communication and forms alignment system with positioning terminal.Control platform sends communication data and/or Location Request order；Positioning terminal receives communication data and/or Location Request order, communication data is sent to purpose terminal, and/or carry out indoor or outdoors positioning according to Location Request order.Discontinuous drawback is positioned when shelter instant invention overcomes the outdoor positioning in positioning in the prior art, it is main communication module to the GPRS communication modules in positioning terminal, the mode of communication module realizes that indoor and outdoor is communicated supplemented by Beidou communication module, indoor outside fix is realized with reference to RFID location technologies, Big Dipper location technology, ensure that the positional information of positioning terminal is not lost continuously, and have control platform with Android application program provide can interactive interface, meet the market demand higher.
Description
Technical Field
The invention relates to the technical field of communication positioning application, in particular to a communicable indoor and outdoor seamless positioning system and a positioning method based on an android platform.
Background
With the rapid development of mobile internet and satellite positioning system, the position positioning service plays an increasingly important role in people's life. Various location services industries have led to the development of the GNSS (Global Navigation satellite system) industry. And with the acceleration of the urbanization process, tunnels and large buildings are increased, and people have more time in indoor environments which cannot be covered by satellite signals, so that terminals which can provide indoor and outdoor continuous positioning and can be interacted are urgently needed to meet higher positioning requirements.
Currently, the outdoor positioning systems which are mature in application include a GPS (Global positioning System), a beidou positioning System, a GLONASS, and the like. The Beidou positioning system is used as a satellite positioning system independently researched and developed in China, and has the characteristic of short message communication. The Beidou satellite navigation system aims to provide high-quality positioning, time service and navigation service for global users, and comprises two modes of authorization service and open service. The open service is to provide location, speed measurement and time service for global free, the location precision is 10 meters, and the speed measurement precision is 0.2 meters per second. Common indoor positioning technologies mainly include infrared rays, ultrasonic waves, bluetooth, RFID (Radio Frequency Identification), ultra wide band, Zigbee, WIFI, and the like. The RFID is widely used as a non-contact automatic identification technology due to its advantages of low cost and accurate positioning.
The Android operating system is an open source operating system based on Linux, and can conveniently operate external equipment with the help of a Linux kernel. The system with more than android3.0 supports the USB Host function, and can conveniently use the API to realize serial communication. Android has been widely applied to various fields due to the characteristics of open source and the like, and Android terminals have high market share.
At present, a GPS positioning system is mostly adopted for positioning terminals in the market, and terminals capable of realizing indoor and outdoor combined positioning are lacked.
Disclosure of Invention
The invention aims to solve the problems that the indoor positioning cannot be realized due to the indoor environment which cannot be covered by the existing satellite signals; provided are a communicable indoor and outdoor seamless positioning system and a positioning method based on an android platform.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a communicable indoor and outdoor seamless positioning system based on an android platform, the positioning system comprising:
the control platform is provided with an android system; the control platform is used for sending communication data and/or positioning request commands;
and the positioning terminal is used for receiving the communication data and/or the positioning request command, sending the communication data to a target terminal, and/or carrying out indoor or outdoor positioning according to the positioning request command.
Preferably, the positioning terminal includes:
the interface conversion layer is in data communication with the control platform and is used for receiving the communication data and/or the positioning request command;
the module layer is used for sending the communication data to a destination terminal and/or carrying out indoor or outdoor positioning according to the positioning request command;
and the power layer is used for providing working power for the interface conversion layer and the module layer respectively.
Preferably, the module layer comprises:
the Beidou communication module is used for converting the communication data into communication data with a data type in a Beidou short message form and sending the communication data to the target terminal when the global mobile communication system does not exist;
the GPRS communication module is used for sending the communication data to the destination terminal when the global system for mobile communication exists;
the Beidou positioning module is used for feeding back real-time positioning data to the control platform and displaying position information on an outdoor map acquired by the control platform when the positioning request command signal intensity is smaller than a radio frequency identification signal intensity threshold value;
and the radio frequency identification module is used for reading radio frequency identification tag information around the positioning terminal and displaying the position information corresponding to the radio frequency identification tag information on an indoor map built in the control platform when the signal intensity of the positioning request command is greater than or equal to the radio frequency identification signal intensity threshold value.
Preferably, the control platform and the positioning terminal perform serial port detection, and after the detection is completed, the control platform allocates corresponding initial ports for the Beidou communication module, the Beidou positioning module, the GPRS communication module and the radio frequency identification module respectively, and sets a plurality of corresponding initial parameters;
the plurality of initial parameters includes: an initial baud rate, a check bit, a stop bit, and a flow control parameter.
A communicable indoor and outdoor seamless positioning method based on an android platform, the positioning method comprising:
the user sends communication data and/or a positioning request command;
and receiving the communication data and/or the positioning request command, sending the communication data to a destination terminal, and/or carrying out indoor or outdoor positioning according to the positioning request command.
Preferably, the step of receiving the communication data and/or the positioning request command, sending the communication data to a destination terminal, and/or performing indoor or outdoor positioning according to the positioning request command specifically includes:
receiving the communication data and/or the positioning request command;
sending the communication data to a destination terminal; and/or the presence of a gas in the gas,
and carrying out indoor or outdoor positioning according to the positioning request command.
Preferably, the step of sending the communication data to the destination terminal specifically includes:
when a global system for mobile communication exists, a GPRS sub-thread is adopted to send the communication data to the target terminal; or,
and when the global mobile communication system does not exist, converting the communication data into communication data with the data type of a Beidou short message form, and sending the communication data to the target terminal.
Preferably, the step of performing indoor or outdoor positioning according to the positioning request command specifically includes:
when the signal intensity of the positioning request command is smaller than the signal intensity threshold value of the radio frequency identification, feeding back real-time positioning data to the control platform, and displaying position information on an outdoor map acquired by the control platform;
and when the signal intensity of the positioning request command is greater than or equal to the radio frequency identification signal intensity threshold, the positioning request command is used for reading radio frequency identification tag information around the positioning terminal and displaying the position information corresponding to the radio frequency identification tag information on an indoor map built in the control platform.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The positive progress effects of the invention are as follows:
in the indoor and outdoor communicable seamless positioning system and method based on the android platform, the control platform and the positioning terminal establish data communication to form a positioning system. The control platform sends communication data and/or positioning request commands; the positioning terminal receives the communication data and/or the positioning request command, transmits the communication data to the destination terminal, and/or performs indoor or outdoor positioning according to the positioning request command. The invention overcomes the defect of discontinuous positioning under the conditions of blocking objects and the like in the prior art, realizes indoor and outdoor communication by using the GPRS communication module in the positioning terminal as a main communication module and the Beidou communication module as an auxiliary communication module, realizes indoor and outdoor positioning by combining the RFID positioning technology and the Beidou positioning technology, ensures that the position information of the positioning terminal is not lost continuously, provides an interactive interface by a control platform with an android application program, and meets higher market requirements.
Drawings
Fig. 1 is a schematic diagram of an overall structure of a communicable indoor and outdoor seamless positioning system based on an android platform.
Fig. 2 is a schematic overall flow diagram of the indoor and outdoor seamless positioning method for communication based on the android platform.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1, a communicable indoor and outdoor seamless positioning system based on an android platform includes: control platform 1, positioning terminal 2.
Wherein, control platform 1 is equipped with the tall and erect system of ann. The control platform 1 is used to send communication data and/or positioning request commands. The positioning terminal 2 is configured to receive the communication data and/or the positioning request command, send the communication data to a destination terminal, and/or perform indoor or outdoor positioning according to the positioning request command.
As shown in fig. 1, in this embodiment, the positioning terminal 2 includes: interface conversion layer 22, module layer 21, and power layer 23.
In this embodiment, the interface conversion layer 22 performs data communication with the control platform 1, and is configured to receive communication data and/or a positioning request command. The module layer 21 is used for sending communication data to a destination terminal and/or performing indoor or outdoor positioning according to a positioning request command. The power layer 23 provides operating power for the interface conversion layer 22 and the module layer 21, respectively.
In this embodiment, the power layer 23 is a 12V storage battery, and an LM2576 voltage stabilization chip is used to build a voltage stabilization circuit, so as to step down 12V to 5V and 3.3V for the interface conversion layer 22 and each module of the module layer 21 to use.
In this embodiment, the interface conversion layer 22 is used to realize the conversion between the RS232 serial port of the positioning terminal 2 and the USB interface of the control platform 1.
The control platform 1 and the positioning terminal 2 carry out serial port detection, after the detection is finished, the control platform 1 respectively allocates corresponding initial ports for the Beidou communication module 211, the Beidou positioning module 212, the GPRS communication module 213 and the radio frequency identification module 214, and sets a plurality of corresponding initial parameters; in this embodiment, the plurality of initial parameters include: an initial baud rate, a check bit, a stop bit, and a flow control parameter.
As shown in fig. 1, the module layer 21 includes: the Beidou communication module 211, the GPRS communication module 213, the Beidou positioning module 212 and the radio frequency identification module 214.
When the global system for mobile communication does not exist, the Beidou communication module 211 converts the communication data into communication data with a data type of a Beidou short message form and sends the communication data to the destination terminal.
The GPRS communication module 213 serves to transmit communication data to a destination terminal when a global system for mobile communications exists.
In the invention, the GPRS communication module 213 is used as a main communication module, and the Beidou communication module 211 is used as an auxiliary communication module. Judging whether a user has a communication request, selecting a corresponding communication mode to establish communication connection with a target terminal by detecting whether a GSM network exists or not after the user inputs any information or current terminal position information on a control platform 1, and calling a GGPRS communication module 213 to execute GPRS data transceiving and send information to the target terminal when the GSM network is detected; otherwise, the Beidou communication module 211 is called to convert the information into Beidou short message data, and the Beidou short message data is sent to the target terminal through the Beidou satellite.
When the positioning request command signal strength is smaller than the radio frequency identification signal strength threshold, the beidou positioning module 212 is configured to feed back real-time positioning data to the control platform 1, and display the position information on the outdoor map acquired by the control platform 1.
In this embodiment, the beidou positioning module 212 analyzes longitude, latitude, elevation and time information of a specific position, calls a map SDK (software development kit) interface in the control platform 1 to access a public network map as an outdoor map, and displays corresponding position information on the outdoor map.
When the signal strength of the positioning request command is greater than or equal to the rfid signal strength threshold, the rfid module 214 is configured to read rfid tag information around the positioning terminal 2, and display position information corresponding to the rfid tag information on an indoor map built in the control platform 1.
The embodiment adopts the TM8540 beidou chip to contain the functions of the beidou communication module 211 and the beidou positioning module 212. The chip is small in size and low in power consumption, and is compatible with a Beidou first-generation communication module and a Beidou second-generation positioning module. The locking time is 35-37 s of cold start, 1-2 s of hot start, the recapture time is less than 1s, and the positioning speed is high. In the aspect of precision, the horizontal precision and the vertical precision are respectively 5m and 10m, the speed precision is 0.1m/s, and the time service precision is less than 100ns, so that the design requirement of the embodiment is completely met. The module is compatible with the first generation and the second generation of the big Dipper, can provide positioning, time service and communication functions, can complete the switching function of the output update rate of the NMEA statement by sending an output statement update rate instruction to the module through the NMEA serial port, and has the fastest update rate of 2 Hz. Data returned by the Beidou second-generation communication module comprise position information (GGA), geodetic coordinate position information (GLL), precision factors, effective satellite numbers (GSA), visible satellite states (GSV) and other information, and longitude and latitude, elevation, time and other information can be analyzed through an application program of the Android control platform 1. The Beidou I communication module provides a Chinese character telegraph text (transmitted by computer code codes) within 44 Chinese characters or a code telegraph text (namely BCD code) within 157 Chinese characters.
AS the radio frequency identification module 214, an AS3991Roger UHF RFID reader is used. The rfid module 214 includes an antenna, an rf transceiver module, a signal processing unit, a control unit, and an interface circuit. A chip of the type SIM900A is used as the GPRS communication module 213.
The indoor outer seamless positioning system of can communicating based on tall and erect platform of ann that this embodiment discloses has overcome among the prior art as the outdoor location of positioning terminal 2 and has fixed a position discontinuous drawback under the condition of sheltering from the thing, has guaranteed that positioning terminal 2's positional information does not lose in succession, satisfies with high market demand.
Example 2
As shown in fig. 2, a positioning method for a communicable indoor and outdoor seamless positioning system based on an android platform includes:
s1, the user sends communication data and/or positioning request command through the control platform 1.
S2, the positioning terminal 2 receives the communication data and/or the positioning request command, sends the communication data to the destination terminal, and/or performs indoor or outdoor positioning according to the positioning request command.
Before step S1, the positioning terminal 2 and the control platform 1 directly perform serial port detection and setting, determine whether the positioning terminal 2 is communicated with the control platform 1, after the detection is completed, the control platform 1 pops up a dialog box to remind the user, and the user determines whether to open a corresponding application according to the intention. Secondly, after the detection is finished, the control platform 1 allocates corresponding initial ports for the Beidou communication module 211, the Beidou positioning module 212, the GPRS communication module 213 and the radio frequency identification module 214 respectively, and sets a plurality of corresponding initial parameters; in this embodiment, the plurality of initial parameters include: an initial baud rate, a check bit, a stop bit, and a flow control parameter.
Step S2 specifically includes:
s2.1, the positioning terminal 2 receives the communication data and/or the positioning request command.
And S2.2, the positioning terminal 2 sends the communication data to a target terminal.
And/or the presence of a gas in the gas,
and S2.3, the positioning terminal 2 carries out indoor or outdoor positioning according to the positioning request command.
Step S2.2, specifically comprising:
s2.2.1, when the global system for mobile communications exists, the GPRS communication module 213 transmits the communication data to the destination terminal using the GPRS sub-thread.
S2.2.2, when there is no gsm, the beidou communication module 211 converts the communication data into communication data with the data type of beidou short message form and sends the communication data to the destination terminal.
In the above steps, the beidou communication module 211 performs encapsulation such as sending and receiving addresses, information categories, message lengths, checksums and the like on communication data to be sent, forwards the communication data to a target terminal through the beidou satellite, and the target terminal analyzes user information according to a data format. When the Beidou communication module 211 receives communication data in a Beidou short message form sent by other destination terminals, the communication data is analyzed and displayed in a dialog box of the control platform 1.
In this embodiment, step S2.2.2 is adopted instead of step S2.2.1 only in environments such as mountainous areas that cannot be covered by the gsm.
Step S2.3, specifically including:
s2.3.1, when the signal intensity of the positioning request command is smaller than the signal intensity threshold value of the radio frequency identification, feeding back the real-time positioning data to the control platform 1, and displaying the position information on the outdoor map acquired by the control platform 1.
S2.3.2, when the signal intensity of the positioning request command is greater than or equal to the rfid signal intensity threshold, it is used to read the rfid tag information around the positioning terminal 2 and display the location information corresponding to the rfid tag information on the indoor map built in the control platform 1.
The positioning method for the indoor and outdoor seamless positioning system capable of communicating based on the android platform, disclosed by the embodiment, effectively solves the problem of discontinuous positioning of the current positioning terminal 2, meets higher market demands, is high in positioning precision, reliable in communication and low in power consumption, and is convenient to apply to a vehicle-mounted environment.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (8)
1. A communicable indoor and outdoor seamless positioning system based on an android platform, the positioning system comprising:
the control platform is provided with an android system; the control platform is used for sending communication data and/or positioning request commands;
and the positioning terminal is used for receiving the communication data and/or the positioning request command, sending the communication data to a target terminal, and/or carrying out indoor or outdoor positioning according to the positioning request command.
2. The android platform-based communicable indoor and outdoor seamless positioning system of claim 1, wherein the positioning terminal comprises:
the interface conversion layer is in data communication with the control platform and is used for receiving the communication data and/or the positioning request command;
the module layer is used for sending the communication data to a destination terminal and/or carrying out indoor or outdoor positioning according to the positioning request command;
and the power layer is used for providing working power for the interface conversion layer and the module layer respectively.
3. The android platform-based communicable indoor and outdoor seamless positioning system of claim 2, wherein the module layer comprises:
the Beidou communication module is used for converting the communication data into communication data with a data type in a Beidou short message form and sending the communication data to the target terminal when the global mobile communication system does not exist;
the GPRS communication module is used for sending the communication data to the destination terminal when the global system for mobile communication exists;
the Beidou positioning module is used for feeding back real-time positioning data to the control platform and displaying position information on an outdoor map acquired by the control platform when the positioning request command signal intensity is smaller than a radio frequency identification signal intensity threshold value;
and the radio frequency identification module is used for reading radio frequency identification tag information around the positioning terminal and displaying the position information corresponding to the radio frequency identification tag information on an indoor map built in the control platform when the signal intensity of the positioning request command is greater than or equal to the radio frequency identification signal intensity threshold value.
4. The android platform-based communicable indoor and outdoor seamless positioning system of claim 3, wherein the control platform performs serial port detection with the positioning terminal, and after the detection is completed, the control platform allocates corresponding initial ports for the Beidou communication module, the Beidou positioning module, the GPRS communication module and the radio frequency identification module respectively, and sets a plurality of corresponding initial parameters;
the plurality of initial parameters includes: an initial baud rate, a check bit, a stop bit, and a flow control parameter.
5. A communicable indoor and outdoor seamless positioning method based on an android platform is characterized by comprising the following steps:
the user sends communication data and/or a positioning request command;
and receiving the communication data and/or the positioning request command, sending the communication data to a destination terminal, and/or carrying out indoor or outdoor positioning according to the positioning request command.
6. The android platform-based communicable indoor and outdoor seamless positioning method of claim 5, wherein the step of receiving the communication data and/or the positioning request command, sending the communication data to a destination terminal, and/or performing indoor or outdoor positioning according to the positioning request command specifically comprises:
receiving the communication data and/or the positioning request command;
sending the communication data to a destination terminal; and/or the presence of a gas in the gas,
and carrying out indoor or outdoor positioning according to the positioning request command.
7. The android platform-based communicable indoor and outdoor seamless positioning method of claim 6, wherein the step of sending the communication data to a destination terminal specifically comprises:
when a global system for mobile communication exists, a GPRS sub-thread is adopted to send the communication data to the target terminal; or,
and when the global mobile communication system does not exist, converting the communication data into communication data with the data type of a Beidou short message form, and sending the communication data to the target terminal.
8. The android platform-based communicable indoor and outdoor seamless positioning method of claim 6, wherein the step of performing indoor or outdoor positioning according to the positioning request command specifically comprises:
when the signal intensity of the positioning request command is smaller than the signal intensity threshold value of the radio frequency identification, feeding back real-time positioning data to the control platform, and displaying position information on an outdoor map acquired by the control platform;
and when the signal intensity of the positioning request command is greater than or equal to the radio frequency identification signal intensity threshold, the positioning request command is used for reading radio frequency identification tag information around the positioning terminal and displaying the position information corresponding to the radio frequency identification tag information on an indoor map built in the control platform.
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Application publication date: 20170613 |