CN103024665B - A kind of electronic tag and communication means based on electronic tag and radio positioner - Google Patents
A kind of electronic tag and communication means based on electronic tag and radio positioner Download PDFInfo
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Abstract
The invention discloses a kind of electronic tag and communication means based on electronic tag, described method includes: launch wireless signal by the radio signal source in electronic tag；Receive the positioning request information from mobile terminal；Generate the positional information of electronic tag；It is sent out the positional information of described electronic tag.By receiving the positional information that electronic tag sends, user can know electronic tag position fast and accurately.
Description
Technical Field
The invention relates to the technical field of radio, in particular to an electronic tag and a communication method based on the electronic tag.
Background
In real life, the trouble that small articles are not easy to find is often encountered. For example, some important files/books are placed in a certain drawer in a house, and the important files/books cannot be found out when the important files/books are used urgently because the important files/books are left unused for a long time and the user forgets to place the important files/books.
In order to solve the above problems, in the prior art, paper labels are attached to files/books, then numbers are recorded on the labels according to the positions of the files/books to generate index cards or databases, and when the articles need to be searched, the articles are positioned by means of index retrieval and manual comparison. For example: the label number "B5H 612", wherein "B" indicates that the book is located in the B area, "5" indicates that the book is placed on the No. 5 bookshelf, "H" indicates that the book belongs to the history class book, "612" is the serial number of the book, and the like.
By adopting the mode, the user is required to number the books and the bookshelves in advance, and the realization is very inconvenient. Especially for some large libraries and storage centers, it usually takes a lot of time to search and locate an article from a large number of books and goods in a manual manner, and the locating cost is very high.
Therefore, how to quickly and accurately position the object becomes a technical problem which needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of the above, the present invention has been made to provide an electronic tag and a wireless communication method based on an electronic tag that overcome or at least partially solve the above problems.
The invention provides a communication method based on an electronic tag, which comprises the following steps:
transmitting a wireless signal through a wireless signal source in the electronic tag;
receiving positioning request information from a mobile terminal;
generating position information of the electronic tag;
and sending the position information of the electronic tag to the outside.
Optionally, the wireless signal includes:
bluetooth signal and/or
Infrared signal and/or
WIFI Signal and/or
General packet radio signals GPRS.
Optionally, the generating the location information of the electronic tag includes:
acquiring electronic tag coordinate information through a satellite positioning system;
the sending the position information of the electronic tag outwards comprises:
and sending the coordinate information of the electronic tag to a corresponding mobile terminal.
Optionally, the electronic tag location information includes:
electronic tag prompt tones and/or electronic tag optical signals;
the sending of the location information of the electronic tag to the outside includes:
and sending the electronic tag prompt tone and/or the electronic tag light signal through a loudspeaker and/or a light source.
Optionally, the method further includes:
receiving a power setting instruction from a mobile terminal;
setting the wireless radio frequency emission power of the electronic tag according to the power setting instruction;
and sending the current wireless transmission power value to the mobile terminal.
In order to solve the above problem, the present invention further provides a wireless positioning method based on an electronic tag, including:
receiving a wireless signal from an electronic tag;
sending positioning request information to the electronic tag;
acquiring position information of the electronic tag;
and outputting the position information to an external display device.
Optionally, the acquiring the location information of the electronic tag includes: receiving position information from the electronic tag;
the position information of the electronic tag comprises:
electronic label coordinate information and/or
Electronic label prompt tone and/or
And (4) electronic tag optical signals.
Optionally, the acquiring the location information of the electronic tag further includes:
acquiring first coordinate information of a current first coordinate point and second coordinate information of a current second coordinate point;
obtaining a distance value corresponding to the electronic tag, wherein the distance value comprises: a first distance value R1 corresponding to the first coordinate point and the electronic tag and a second distance value R2 corresponding to the second coordinate point and the electronic tag;
and acquiring the position information of the electronic tag, which is the intersection of the coordinates of a first target area and a second target area, wherein the first target area comprises a position coordinate point set with an equal distance R1 with a first coordinate point, and the second target area comprises a position coordinate point set with an equal distance R2 with a second coordinate point.
Optionally, the acquiring the location information of the electronic tag further includes:
acquiring first coordinate information to nth coordinate information corresponding to current first coordinate point to nth coordinate point, wherein n is an integer greater than or equal to 2;
acquiring first to nth distance values corresponding to the electronic tag, wherein the first distance value R1 is the distance between a first coordinate point and the electronic tag, and the nth distance value Rn is the distance between the nth coordinate point and the electronic tag;
acquiring the coordinate intersection of a first target area to an nth target area as the position information of the electronic tag, wherein the first target area comprises a position coordinate point set with an equal distance R1 with a first coordinate point, and the nth target area comprises a position coordinate point set with an equal distance Rn with an nth coordinate point.
Optionally, the obtaining a distance value corresponding to the electronic tag includes:
sending a power setting instruction to the electronic tag, wherein the power value corresponding to the instruction is gradually reduced;
acquiring a power threshold value when the electronic tag loses connection;
and matching a preset communication distance mapping table according to the power threshold, and if the power threshold is matched with the preset communication distance mapping table, acquiring a corresponding distance as a communication distance value corresponding to the electronic tag.
In order to solve the above problem, the present invention further provides an electronic tag, including:
the radio frequency module is used for receiving and transmitting wireless signals;
the radio frequency module is also used for receiving positioning request information from the mobile terminal;
the position information generating module is used for generating the position information of the electronic tag;
and the position information sending module is used for sending the position information of the electronic tag outwards.
Optionally, the radio frequency module is further configured to transmit and receive
Bluetooth signal and/or
Infrared signal and/or
WIFI Signal and/or
General packet radio signals GPRS.
Optionally, the position information generating module is further configured to obtain coordinate information of the electronic tag through a satellite positioning system;
the position information sending module is also used for sending the coordinate information of the electronic tag to the corresponding mobile terminal.
Optionally, the position information generating module is further configured to generate an electronic tag prompt tone and/or an electronic tag optical signal;
the position information sending module is also used for sending electronic tag prompt tones and/or electronic tag optical signals through a loudspeaker and/or a light source.
Optionally, the radio frequency module is further configured to receive a transmission power setting instruction from the mobile terminal;
the electronic tag further comprises:
the transmitting power configuration module is used for setting the wireless transmitting power of the electronic tag according to the power setting instruction;
and the radio frequency module is also used for sending the current transmission power value to the mobile terminal.
In order to solve the above problem, the present invention further provides a wireless positioning device based on an electronic tag, including:
the wireless communication module is used for receiving a wireless signal from the electronic tag;
the positioning request sending control module is used for sending positioning request information to the electronic tag through the wireless communication module;
the position information acquisition module is used for acquiring the position information of the electronic tag;
and the position information output module is used for outputting the position information to external display equipment.
Optionally, the location information obtaining module is further configured to receive location information from an electronic tag;
the location information includes:
electronic label coordinate information and/or
Electronic label prompt tone and/or
And (4) electronic tag optical signals.
Optionally, the location information obtaining module further includes:
the coordinate information acquisition submodule is used for acquiring first coordinate information of the current first coordinate point and second coordinate information of the current second coordinate point;
a distance obtaining submodule, configured to obtain a distance value corresponding to the electronic tag, where the distance value includes: a first distance value R1 corresponding to the first coordinate point and the electronic tag and a second distance value R2 corresponding to the second coordinate point and the electronic tag;
and the position information acquisition sub-module is used for acquiring the position information of the electronic tag, which is the intersection of the coordinates of a first target area and a second target area, wherein the first target area comprises a position coordinate point set with an equal distance R1 with the first coordinate point, and the second target area is a position coordinate point set with an equal distance R2 with the second coordinate point.
Optionally, the coordinate information obtaining sub-module is further configured to obtain first to nth coordinate information corresponding to current first to nth coordinate points, where n is an integer greater than or equal to 2;
the distance obtaining sub-module is further configured to obtain first to nth distance values corresponding to the electronic tag, where the first distance value R1 is a distance between a first coordinate point and the electronic tag, and the nth distance value Rn is a distance between an nth coordinate point and the electronic tag;
the position information obtaining sub-module is further configured to obtain a coordinate intersection of a first target area to an nth target area as position information of the electronic tag, where the first target area includes a set of position coordinate points having an equal distance R1 from a first coordinate point, and the nth target area includes a set of position coordinate points having an equal distance Rn from an nth coordinate point.
Optionally, the apparatus further comprises:
the power setting instruction sending module is used for sending a power setting instruction to the electronic tag, and the power value corresponding to the instruction is gradually reduced;
the distance acquisition sub-module includes:
the electronic tag power threshold acquisition unit is used for acquiring a wireless power threshold when the electronic tag loses connection;
and the distance value acquisition unit is used for matching a preset communication distance mapping table according to the power threshold, and if the preset communication distance mapping table is matched with the power threshold, acquiring a corresponding distance value as a communication distance value corresponding to the electronic tag.
In the prior art, the label number is used for numbering and positioning the articles such as books/files, but when the articles are searched based on the method, a user needs to check the files or the articles one by one, so that the time cost is very high. The above problem is more prominent particularly when searching in large spatial places. Aiming at the problem, the wireless signal source is arranged in the tag to transmit the wireless signal, when the positioning request information from the mobile terminal is received, the position information of the electronic tag is generated and is sent outwards, and the user can know the position of the electronic tag by holding the mobile terminal, so that the positioning accuracy is greatly improved, and precious time cost is saved for the user.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 shows a schematic structural view of an electronic tag according to an embodiment of the invention;
FIG. 2 is a flow chart diagram illustrating a method for RFID-based communication according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for locating a position based on an electronic tag according to an embodiment of the present invention;
FIG. 4 shows a schematic structural diagram of an electronic tag based pointing device in accordance with one embodiment of the present method;
FIG. 5-a shows a schematic structural diagram of an electronic tag in accordance with one embodiment of the present method;
fig. 5-b shows a schematic diagram of the operating voltage of the electronic tag according to an embodiment of the method.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Referring to fig. 1, fig. 1 shows a schematic structural diagram of a first embodiment of an electronic tag of the present invention, where the electronic tag 100 includes:
the radio frequency module is used for receiving and transmitting wireless radio frequency signals;
the radio frequency module is also used for receiving positioning request information from the mobile terminal;
the position information generating module is used for generating the position information of the electronic tag;
and the position information sending module is used for sending the position information of the electronic tag outwards.
The radio frequency module can be used for transmitting and receiving any carrier signal for wireless transmission, including Bluetooth signals, infrared signals, WIFI signals, general packet radio signals GPRS and the like.
It will be appreciated by those skilled in the art that the electronic tag disclosed herein may also be configured as an electronic device having a battery disposed therein for providing the necessary power to the rf module and other modules within the electronic tag. The battery built in the electronic tag may be a disposable battery, or may be a rechargeable battery or a light-sensitive battery.
In order to make the application range of the electronic tag wider, the volume of the electronic tag should be reduced as much as possible. In another preferred embodiment of the invention, the disposable button cell is used as a power source of the electronic tag to achieve the purpose of reducing the volume.
In order to obtain the accurate position of the electronic tag, the position information generating module is further configured to obtain coordinate information of the electronic tag through a satellite positioning system; the position information sending module is also used for sending the coordinate information of the electronic tag to the corresponding mobile terminal. In particular, the satellite positioning coordinate information it acquires may be provided by satellite positioning systems of different countries or organizations, such as: GPS in the united states, beidou in china, glonass in russia, galileo in europe, etc. Further, the coordinate information obtaining module may be further configured to obtain a position coordinate provided by a mobile operator, or a position coordinate determined according to a currently received infrared signal and a radar wave signal.
According to the difference of the position coordinate information acquired by the coordinate information acquisition module and the specific application scene of implementing the invention, the position information generation module is also used for generating an electronic tag prompt tone and/or an electronic tag optical signal; the position information sending module is also used for sending electronic tag prompt tones and/or electronic tag optical signals through a loudspeaker and/or a light source. Through the prompt tone and/or the flickering optical signal, the current position of the electronic tag can be provided for a user in a more intuitive mode, the user can conveniently find and position, and the positioning time cost is reduced.
In another preferred embodiment of the present invention, the mobile terminal determines the location of the electronic tag by acquiring the distance to the electronic tag. Specifically, the maximum communication distance corresponding to the power threshold when the electronic tag loses connection is obtained as the current distance between the electronic tag and the mobile terminal. In order to obtain the current communication distance of the electronic tag, the radio frequency module is further configured to receive a transmission power setting instruction from the mobile terminal; the electronic tag further comprises: the transmitting power configuration module is used for setting the wireless transmitting power of the electronic tag according to the transmitting power setting instruction; and the radio frequency module is also used for sending the current transmission power value to the mobile terminal.
Further, the electronic tag disclosed by the invention further comprises: and the power supply management module is used for setting the power supply power consumption of each module in the electronic tag according to the power supply power consumption setting instruction. The power consumption setting instruction can be set directly on the electronic tag by a user, and can also be set remotely through software running on the mobile terminal. Therefore, the lowest power consumption of the electronic tag is effectively realized, and the service life of the electronic tag is prolonged.
Referring to fig. 2, fig. 2 is a flowchart illustrating a first embodiment of a communication method based on an electronic tag according to the present invention. The embodiment specifically comprises the following steps:
step 201, a wireless signal is transmitted through a wireless signal source in the electronic tag.
The wireless signals comprise Bluetooth signals and/or infrared signals and/or WIFI signals and/or general packet radio signals GPRS. In the following description of the embodiments, bluetooth information numbers are taken as examples.
Step 202, receiving positioning request information from the mobile terminal.
When the method is implemented, the mobile terminal can send positioning request information to the electronic tag after establishing Bluetooth connection with the electronic tag; in addition, it can be considered that the electronic tag receives a positioning request of the mobile terminal upon receiving a bluetooth connection request from the mobile terminal. It should be understood by those skilled in the art that any manner of triggering the electronic tag to perform subsequent actions is an equivalent alternative to the embodiments of the present invention.
Step 203, generating the position information of the electronic label.
And step 204, sending the position information of the electronic tag to the outside.
The position information of the electronic tag can be generated in different modes according to different application scenes.
In a preferred embodiment of the present invention, the generating the location information of the electronic tag includes: acquiring electronic tag coordinate information through a satellite positioning system;
the sending the position information of the electronic tag outwards comprises: and sending the coordinate information of the electronic tag to a corresponding mobile terminal.
In another preferred embodiment of the present invention, the position information of the generated electronic tag comprises an electronic tag warning tone and/or an electronic tag optical signal.
Of course, in particular implementations, a variety of location information may be sent out in a combined manner. For example, in a large parking lot, in order to facilitate a user to acquire the position of the vehicle when taking the vehicle, once the electronic tag placed in the vehicle is effectively connected with the handheld mobile terminal of the user, the acquired satellite positioning coordinate information GPS is sent to the handheld mobile terminal of the user as position information, and meanwhile, a prompt sound and a light flash are sent out, so that the user can conveniently and accurately position the vehicle.
In another embodiment disclosed in the present invention, the mobile terminal may obtain a communication distance with the electronic tag according to a power threshold when the mobile terminal loses bluetooth connection with the electronic tag, and may further obtain a location of the electronic tag, where the communication method based on the electronic tag further includes: the electronic tag receives a power setting instruction from the mobile terminal; setting the wireless transmitting power of the electronic tag according to the power setting instruction; and the electronic tag sends the current wireless power value to the mobile terminal.
Referring to fig. 3, a flowchart of a first embodiment of a wireless positioning method based on an electronic tag according to the present invention is shown. The embodiment specifically comprises the following steps:
step 301, receiving a wireless signal from an electronic tag.
Step 302, sending the positioning request information to the electronic tag.
The invention does not specifically limit the timing and content of sending the positioning request information, the positioning request can be sent after the connection with the electronic tag is established, in addition, the positioning request information can also be contained in the connection request with the electronic tag, and of course, the connection request with the electronic tag can also be equivalent to the positioning request.
And step 303, acquiring the position information of the electronic tag.
In a preferred embodiment of the present invention, the acquiring the location information of the electronic tag includes:
receiving position information from an electronic tag, wherein the position information of the electronic tag comprises: electronic tag coordinate information and/or electronic tag prompt tone and/or electronic tag optical signal. The electronic tag coordinate information may be satellite positioning information obtained from a satellite positioning system, or may be coordinate information obtained by a mobile operator, infrared rays, radar waves, laser, or the like.
In another preferred embodiment of the present invention, the electronic tag does not need to provide its location information to the mobile terminal, and the acquiring the location information of the electronic tag includes:
acquiring first coordinate information of a current first coordinate point and second coordinate information of a current second coordinate point;
obtaining a distance value corresponding to the electronic tag, wherein the distance value comprises: a first distance value R1 corresponding to the first coordinate point and the electronic tag and a second distance value R2 corresponding to the second coordinate point and the electronic tag;
and acquiring the position information of the electronic tag, which is the intersection of the coordinates of a first target area and a second target area, wherein the first target area comprises a position coordinate point set with an equal distance R1 with a first coordinate point, and the second target area comprises a position coordinate point set with an equal distance R2 with a second coordinate point.
In order to further narrow the error range of the electronic tag location information, we may add a target area, specifically, the acquiring the electronic tag location information further includes:
acquiring first coordinate information to nth coordinate information corresponding to current first coordinate point to nth coordinate point, wherein n is an integer greater than or equal to 2;
acquiring first to nth distance values corresponding to the electronic tag, wherein the first distance value R1 is the distance between a first coordinate point and the electronic tag, and the nth distance value Rn is the distance between the nth coordinate point and the electronic tag;
acquiring the coordinate intersection of a first target area to an nth target area as the position information of the electronic tag, wherein the first target area comprises a position coordinate point set with an equal distance R1 with a first coordinate point, and the nth target area comprises a position coordinate point set with an equal distance Rn with an nth coordinate point.
The following method is adopted when the distance value corresponding to the electronic tag is obtained, and the method comprises the following steps:
sending a power setting instruction to the electronic tag, wherein the power value corresponding to the instruction is gradually reduced;
acquiring a power threshold value when the electronic tag loses connection;
and matching a preset communication distance mapping table according to the power threshold, and if the power threshold is matched with the preset communication distance mapping table, acquiring a corresponding distance as a communication distance value corresponding to the electronic tag.
Taking bluetooth communication as an example, the communication distance mapping table may be generated by a statistical manner through actual measurement in advance, and the mapping table stores a mapping relationship between bluetooth transmission power of some type of electronic tag and a corresponding maximum communication distance, as shown in table 1:
| transmitting power | Maximum communication distance |
| 0dBm | 10m |
| 2dBm | 20m |
| 20dBm | 100m |
TABLE 1
In specific implementation, when the mobile terminal station is held by a user at a first coordinate point, the mobile terminal acquires first coordinate information of the mobile terminal at the moment through a satellite positioning system or a mobile network, sends a power adjustment instruction to the electronic tag at the moment until a maximum power threshold value when the electronic tag loses connection is acquired, and then acquires a corresponding distance value R1 from a communication distance mapping table according to the power threshold value, so that the mobile terminal can further acquire a first target area with an equal distance R1 from the first coordinate point. Then, and so on, a second target zone may be obtained. And finally, obtaining the coordinate intersection from the first target area to the nth target area, namely the position of the electronic tag.
And step 304, outputting the electronic tag position information to an external device.
For the position coordinate information received from the electronic tag, because the positioning is relatively accurate, the coordinate information can be converted into map coordinates to be directly displayed on a screen of the mobile terminal, and further, the plane position of the electronic tag can be displayed, and the space position of the electronic tag can also be displayed, so that a user can look up the position of the electronic tag on a map more intuitively, and the positioning accuracy is greatly improved. If the electronic tag position information is a prompt tone, positioning is directly provided for a user in a sound mode; in addition, the distance between the electronic tag and the mobile terminal can be roughly estimated according to the propagation time from the sending of the prompt tone to the arrival of the current mobile terminal, and then the current position of the electronic tag can be calculated and displayed in the map of the mobile terminal.
In another preferred embodiment of the invention, a power consumption setting instruction can be sent to the electronic tag through the mobile terminal, so that the lowest power consumption of the electronic tag is realized, and the service life of the electronic tag is prolonged as much as possible.
Referring to fig. 4, a schematic structural diagram of a first embodiment of a wireless positioning apparatus based on an electronic tag according to the present disclosure is shown, where the apparatus 400 includes:
a wireless communication module 410 for receiving a wireless signal from the electronic tag;
a positioning request sending control module 420, configured to send positioning request information to the electronic tag through the wireless communication module;
a location information obtaining module 430, configured to obtain location information of the electronic tag;
a position information output module 440, configured to output the position information to an external display device.
Wherein,
the location information obtaining module 430 is further configured to receive location information from an electronic tag;
the location information includes:
electronic label coordinate information and/or
Electronic label prompt tone and/or
And (4) electronic tag optical signals.
Wherein, the location information obtaining module 430 further includes:
the coordinate information obtaining submodule 431 is used for obtaining first coordinate information of the current first coordinate point and second coordinate information of the current second coordinate point;
a distance obtaining submodule 432, configured to obtain a distance value corresponding to the electronic tag, where the distance value includes: a first distance value R1 corresponding to the first coordinate point and the electronic tag and a second distance value R2 corresponding to the second coordinate point and the electronic tag;
a location information obtaining submodule 433, configured to obtain, as location information of the electronic tag, an intersection of coordinates of a first target area and a second target area, where the first target area includes a set of location coordinate points having an equal distance R1 from the first coordinate point, and the second target area is a set of location coordinate points having an equal distance R2 from the second coordinate point.
Wherein,
the coordinate information obtaining submodule 431 is further configured to obtain first to nth coordinate information corresponding to current first to nth coordinate points, where n is an integer greater than or equal to 2;
the distance obtaining submodule 432 is further configured to obtain first to nth distance values corresponding to the electronic tag, where the first distance value R1 is a distance between a first coordinate point and the electronic tag, and the nth distance value Rn is a distance between an nth coordinate point and the electronic tag;
the location information obtaining sub-module 433 is further configured to obtain a coordinate intersection of a first target area to an nth target area as location information of the electronic tag, where the first target area includes a set of location coordinate points having an equal distance R1 from the first coordinate point, and the nth target area includes a set of location coordinate points having an equal distance Rn from the nth coordinate point.
Wherein the apparatus further comprises:
a power setting instruction sending module 450, configured to send a power setting instruction to the electronic tag, where a power value corresponding to the instruction is gradually decreased;
the distance acquisition sub-module 432 includes:
the electronic tag power threshold acquisition unit is used for acquiring a wireless power threshold when the electronic tag loses connection;
and the distance value acquisition unit is used for matching a preset communication distance mapping table according to the power threshold, and if the preset communication distance mapping table is matched with the power threshold, acquiring a corresponding distance value as a communication distance value corresponding to the electronic tag.
For better understanding of the contents of the embodiments of the present invention, referring to fig. 5-a, a schematic structural diagram of a bluetooth low energy tag disclosed in the present invention is shown, where the bluetooth tag 500 includes: the system comprises a battery 510, a charging management module 520, a power management module 530, a Bluetooth radio frequency module 540, a transmission power configuration module 550, an ID memory 560 and a low-power consumption processor ARM core 570.
The battery may be a rechargeable battery or a non-rechargeable battery, and if the battery is a non-rechargeable disposable battery, the charging management module is not necessary, for example, a button battery with a voltage of 3.0V may be used. The power management module can be a low-power-consumption linear voltage regulator and can also be a high-efficiency direct current-direct current converter; the power management module generates 1.8V output voltage to supply power for the Bluetooth radio frequency module and the low-power ARM core, and the ID memory is directly supplied with power by the voltage of a battery. The reason is that the power management module operates intermittently in order to achieve low power consumption. Fig. 5-b depicts a VDD voltage waveform for intermittent operation. During the TON period, the VDD voltage is high; during the TOFF period, the VDD voltage is 0. For example, when the TON time is 0.05mS, the TOFF time is 499.95mS, and the system current consumption at the TON time is 10mA, the average current is 10ma.0.05ms/(0.05mS +499.95mS) =1 uA. For a battery with a capacity of 20ma hours, the blue-blue tooth tag may use 20ma.h/1uA =20000H =833 days. Further reductions in TON and increases in TOFF time can extend the use of bluetooth tags. In addition, the ID memory works under VBAT voltage so as to prevent the ID information stored in the ID memory from being lost when the VDD voltage is 0. The ID memory stores identification information of the bluetooth tag in a binary data manner. When each tag is enabled, a user can set identification information for each bluetooth tag through a handheld device (such as a smart phone, a tablet computer and the like) so as to distinguish the purposes of different tags. In order to determine the approximate distance, the function of modifying and configuring the transmission power of the low-power Bluetooth tag is also designed. When the Bluetooth tag is not connected, the electronic tag transmits a radio frequency signal in an intermittent working mode at the maximum design power, and if the radio frequency signal is found by the mobile device and the connection is established, the transmission power of the Bluetooth tag with low power consumption can be set through the mobile device. From the transmit power at which a connection can be maintained, it can be roughly determined how many meters the distance between the bluetooth low energy tag and the searched mobile device should be. Gradually reducing the transmit power of the bluetooth low energy tag until the connection is lost may help determine the approximate distance of the mobile device from the bluetooth low energy tag. For example 2dB transmission power, i.e. transmission power equal to 1mw.10(2/10) =1.58mW, roughly at a distance of around 20 meters. The greater the transmit power, the greater the connectable distance. Finally, the distances R1 and R2.. Rn between the mobile device and the Bluetooth tags at different positions G1 and G G2... Gn and the intersection areas between target areas S1 and S2.. Sn formed by the positions G1... Gn and the corresponding R1.. Rn respectively are determined as the positions of the Bluetooth tags, and the positions of the Bluetooth tags are displayed in a visual graph mode on a screen of the handheld device of the user.
The algorithms and displays presented herein are not inherently related to any particular computer, virtual machine, or other apparatus. Various general purpose systems may also be used with the teachings herein. The required structure for constructing such a system will be apparent from the description above. Moreover, the present invention is not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. It will be appreciated by those skilled in the art that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components of an electronic label or electronic label based pointing device according to embodiments of the present invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
Claims (9)
1. An electronic tag-based wireless positioning device, comprising:
the wireless communication module is used for receiving a wireless signal from the electronic tag;
the positioning request sending control module is used for sending positioning request information to the electronic tag through the wireless communication module;
the position information acquisition module is used for acquiring the position information of the electronic tag;
the position information output module is used for outputting the position information to external display equipment;
wherein, the position information acquisition module further comprises:
the coordinate information acquisition submodule is used for acquiring first coordinate information of a current first coordinate point and second coordinate information of a current second coordinate point of the positioning device;
a distance obtaining submodule, configured to obtain a distance value corresponding to the electronic tag, where the distance value includes: a first distance value R1 corresponding to the first coordinate point and the electronic tag and a second distance value R2 corresponding to the second coordinate point and the electronic tag;
and the position information acquisition sub-module is used for acquiring the position information of the electronic tag, which is the intersection of the coordinates of a first target area and a second target area, wherein the first target area comprises a position coordinate point set with an equal distance R1 with the first coordinate point, and the second target area is a position coordinate point set with an equal distance R2 with the second coordinate point.
2. The apparatus of claim 1,
the position information acquisition module is also used for receiving position information from the electronic tag;
the location information includes:
electronic label coordinate information and/or
Electronic label prompt tone and/or
And (4) electronic tag optical signals.
3. The apparatus of claim 1, wherein the location information obtaining module further comprises:
the coordinate information acquisition sub-module is further used for acquiring first coordinate information to nth coordinate information corresponding to current first coordinate point to nth coordinate point of the positioning device, wherein n is an integer greater than or equal to 2;
the distance obtaining sub-module is further configured to obtain first to nth distance values corresponding to the electronic tag and the positioning device, where the first distance value R1 is a distance between a first coordinate point and the electronic tag, and the nth distance value Rn is a distance between an nth coordinate point and the electronic tag;
and the position information acquisition sub-module is further used for acquiring the position information of the electronic tag, wherein the coordinate intersection of the first target area to the nth target area is the position information of the electronic tag, the first target area comprises a position coordinate point set with an equal distance R1 with the first coordinate point, and the nth target area comprises a position coordinate point set with an equal distance Rn with the nth coordinate point.
4. The apparatus of claim 1, further comprising:
the power setting instruction sending module is used for sending a power setting instruction to the electronic tag, and the power value corresponding to the instruction is gradually reduced;
the distance acquisition sub-module includes:
the electronic tag power threshold acquisition unit is used for acquiring a wireless power threshold when the electronic tag loses connection;
and the distance value acquisition unit is used for matching a preset communication distance mapping table according to the power threshold, and if the preset communication distance mapping table is matched with the power threshold, acquiring a corresponding distance value as a communication distance value corresponding to the electronic tag.
5. An electronic tag-based communication method, comprising:
transmitting a wireless signal through a wireless signal source in the electronic tag;
receiving positioning request information from a mobile terminal;
generating position information of the electronic tag;
sending the position information of the electronic tag to the outside;
the electronic tag receives a power setting instruction from the mobile terminal;
setting the wireless transmitting power of the electronic tag according to the power setting instruction;
and the electronic tag sends the current wireless power value to the mobile terminal.
6. The method of claim 5, wherein the generating the location information of the electronic tag comprises:
acquiring electronic tag coordinate information through a satellite positioning system;
the sending the position information of the electronic tag outwards comprises:
sending the coordinate information of the electronic tag to a corresponding mobile terminal;
the electronic tag location information further includes:
electronic tag prompt tones and/or electronic tag optical signals;
the sending of the location information of the electronic tag to the outside further includes:
and sending the electronic tag prompt tone and/or the electronic tag light signal through a loudspeaker and/or a light source.
7. An electronic tag, comprising:
the radio frequency module is used for receiving and transmitting wireless signals;
the radio frequency module is also used for receiving positioning request information from the mobile terminal;
the position information generating module is used for generating the position information of the electronic tag;
the position information sending module is used for sending the position information of the electronic tag to the outside;
the radio frequency module is also used for receiving a transmitting power setting instruction from the mobile terminal;
the electronic tag further comprises:
the transmitting power configuration module is used for setting the wireless transmitting power of the electronic tag according to the power setting instruction;
and the radio frequency module is also used for sending the current transmission power value to the mobile terminal.
8. The electronic tag according to claim 7,
the wireless signals transmitted and received by the radio frequency module comprise: bluetooth signals and/or infrared signals and/or WIFI signals and/or general packet radio signals GPRS.
9. The electronic tag according to claim 7,
the position information generating module is also used for acquiring the coordinate information of the electronic tag through a satellite positioning system;
the position information sending module is also used for sending the coordinate information of the electronic tag to the corresponding mobile terminal;
the position information generating module is also used for generating an electronic tag prompt tone and/or an electronic tag optical signal;
the position information sending module is also used for sending electronic tag prompt tones and/or electronic tag optical signals through a loudspeaker and/or a light source.
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| US10613213B2 (en) * | 2016-05-13 | 2020-04-07 | Google Llc | Systems, methods, and devices for utilizing radar with smart devices |
| CN107301518A (en) * | 2017-05-17 | 2017-10-27 | 浙江大学 | A kind of intelligent storage management method based on BLE technologies |
| CN107249214A (en) * | 2017-07-07 | 2017-10-13 | 宇龙计算机通信科技(深圳)有限公司 | Bluetooth power consumption adjusting method and system |
| CN108562869B (en) | 2018-05-22 | 2021-08-03 | 京东方科技集团股份有限公司 | Indoor positioning navigation system and method |
| CN109657771A (en) * | 2018-11-02 | 2019-04-19 | 陕西斯达防爆安全科技股份有限公司 | A kind of wireless telecommunications electronic tag |
| CN111983659A (en) * | 2020-08-06 | 2020-11-24 | 普玄物联科技(杭州)有限公司 | Logistics positioning method and device and charging barrel |
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