CN105975626B - Method and device for encoding geographical location information of equipment - Google Patents
Method and device for encoding geographical location information of equipment Download PDFInfo
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Abstract
The invention provides a method and a device for coding geographical location information of equipment, which are used for solving the problem of data redundancy in the existing geographical location information coding mode of the equipment, and comprise the following steps: acquiring current geographical position information of equipment; coding the obtained geographic position information through a code corresponding to the geographic position; the encoded geographical location information is stored in the device, which saves data overhead.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and an apparatus for encoding geographical location information of a device.
Background
With the rise of intelligent home appliances, more and more intelligent home appliances exist in life, and it is a precondition for more intelligent devices how to simply and quickly locate devices and provide relevant data or send instructions to the devices in a targeted manner through a Location Based Service (LBS) system.
The description of the geographical location information of a device is usually expressed using latitude and longitude. The latitude and longitude can provide accurate position information, however, when the position information is used, the latitude and longitude data also needs to be processed to obtain meaningful information, such as: country, city, etc. In order to increase the processing speed of the system, most of the current solutions add one or more attributes for describing the information of cities, countries, etc.
At present, in order to obtain meaningful location information and accurate longitude and latitude information at the same time in the existing location information coding mode, the longitude and latitude information and the added attribute information need to be transmitted at the same time, and taking a commonly used JSON format as an example, the transmitted information is as follows:
{ "country": China "," province ": Shandong", "city": Qingdao "," latitude ": 36.07", "longitude": 120.33"}
In this example, 90 bytes are occupied in total, the country, province, and city belong to the extension information, and the latitude and longitude belong to the basic information. Only the basic information is retained, 36 bytes are required. Therefore, the extended information occupies a large amount of space, the extended information in the example is simpler, and more space is used if the extended information is more complex data. Therefore, most of software used in China can omit countries, and city codes are used for representing provinces and cities, so that although the use of space can be reduced to a certain extent and the transmission efficiency is improved, the use of country information is not beneficial to internationalization of software, and the maintenance cost is increased, and secondly, longitude and latitude information is hidden in the city information, and the data redundancy is also caused by the coding mode.
Disclosure of Invention
The invention provides a method and a device for coding geographical position information of equipment, which are used for solving the problem of data redundancy in the existing geographical position information coding mode of the equipment.
According to one aspect of the present invention, there is provided a method for encoding geographical location information of a device, comprising: acquiring current geographical position information of equipment; coding the obtained geographic position information through a code corresponding to the geographic position;
storing the encoded geographical location information in the device.
Wherein the code corresponding to the geographic location comprises: the names of cities and administrative areas of lower levels of the cities correspond to administrative division codes thereof, and the country names correspond to internationally uniform country codes.
The encoding of the obtained geographic position information by using a code corresponding to the geographic position includes: and coding by using the codes corresponding to the geographic positions and longitude and latitude offsets of the geographic positions relative to the city where the geographic positions are located, or coding by using longitude and latitude coordinates of the geographic positions to obtain coded geographic position information.
The method for acquiring the current geographic position information of the equipment comprises the following steps: acquiring current longitude and latitude coordinates, and acquiring the name of a geographic position according to the longitude and latitude coordinates; the obtained geographical location information is encoded by using a code, and the encoding method comprises the following two encoding modes: and if the city name of the geographic position is acquired according to the longitude and latitude coordinates, the city name and the longitude and latitude offset of the geographic position relative to the city where the geographic position is located are used for coding, and if the city name of the geographic position is not acquired according to the longitude and latitude coordinates, the longitude and latitude coordinates are used for coding.
The encoded geographical location information includes: the identification position, the country code, the city code and the longitude and latitude offset of the geographic position relative to the city in which the position is located or the longitude and latitude coordinates only comprising the geographic position of the encoding mode.
According to a second aspect of the present invention, there is provided an apparatus for encoding geographical location information of a device, comprising: the acquisition module is used for acquiring the current geographical position information of the equipment; the encoding module is used for encoding the acquired geographic position information through a code corresponding to the geographic position;
and the storage module is used for storing the coded geographical position information in the equipment.
Wherein the code corresponding to the geographic location comprises: the names of cities and administrative areas of lower levels of the cities correspond to administrative division codes thereof, and the country names correspond to internationally uniform country codes.
Wherein, the coding module is specifically configured to: and coding by using the codes corresponding to the geographic positions and longitude and latitude offsets of the geographic positions relative to the city where the geographic positions are located, or coding by using longitude and latitude coordinates of the geographic positions to obtain coded geographic position information.
Wherein, the acquisition module is specifically configured to: acquiring current longitude and latitude coordinates, and acquiring the name of a geographic position according to the longitude and latitude coordinates; the encoding module is specifically configured to: and if the city name of the geographic position is acquired according to the longitude and latitude coordinates, the city name and the longitude and latitude offset of the geographic position relative to the city where the geographic position is located are used for coding, and if the city name of the geographic position is not acquired according to the longitude and latitude coordinates, the longitude and latitude coordinates are used for coding.
The encoded geographical location information includes: the identification position, the country code, the city code and the longitude and latitude offset of the geographic position relative to the city in which the position is located or the longitude and latitude coordinates only comprising the geographic position of the encoding mode.
The invention has the following beneficial effects:
according to the scheme provided by the embodiment, the geographical position information of the equipment is obtained by positioning the equipment, and then the geographical position information of the equipment is encoded and stored, so that the data overhead is saved.
Drawings
Fig. 1 is a flowchart of a method for encoding geographical location information of a device in embodiment 1 of the present invention;
fig. 2 is a block diagram of a system configuration involved in embodiment 2 of the present invention;
fig. 3 is a flowchart of a method for encoding geographical location information of a device in embodiment 2 of the present invention;
fig. 4 is a block diagram of a device for encoding geographical location information of a device in embodiment 3 of the present invention.
Detailed Description
In order to solve the problem of data redundancy in the encoding method of the geographical location information of the device in the prior art, the present invention provides an encoding method and an encoding device of the geographical location information of the device, and the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Example 1
This embodiment provides a method for encoding geographic location information of a device, where the method may be executed by a control terminal or a controlled device having a positioning function and a function of communicating with a server, and fig. 1 is a flowchart of the method for encoding geographic location information of a device provided in embodiment 1, and as shown in fig. 1, the method includes the following steps:
step 101: acquiring current geographical position information of equipment;
wherein, the step may specifically include: and acquiring current longitude and latitude coordinates, and acquiring the name of the geographic position according to the longitude and latitude coordinates.
Step 102: coding the obtained geographic position information through a code corresponding to the geographic position;
the code corresponding to the geographic location may specifically include: the names of cities and administrative areas of lower levels of the cities correspond to administrative division codes thereof, and the country names correspond to internationally uniform country codes.
In this step, the following two encoding methods may be specifically involved:
encoding the acquired geographical location information by using a code corresponding to the geographical location, wherein the encoding comprises the following steps:
and coding by using the codes corresponding to the geographic positions and longitude and latitude offsets of the geographic positions relative to the city where the geographic positions are located, or coding by using longitude and latitude coordinates of the geographic positions to obtain coded geographic position information.
As to which of the two encoding methods is specifically adopted, the following is specific to whether the name of the current geographic location is obtained:
if the city name of the geographic location is obtained according to the longitude and latitude coordinates in the above step 101, the city name and the longitude and latitude offsets of the geographic location from the city where the city is located are used for encoding, and if the city name of the geographic location is not obtained according to the longitude and latitude coordinates, the longitude and latitude coordinates are used for encoding.
Step 103: storing the encoded geographical location information in the device.
The geographic location information obtained by encoding the geographic location information in the above manner may specifically include the following:
the identification position, the country code, the city code and the longitude and latitude offset of the geographic position relative to the city in which the position is located or the longitude and latitude coordinates only comprising the geographic position of the encoding mode.
Example 2
The present embodiment further describes, by using specific examples, the method for encoding geographic location information of a device provided by the present invention:
the basic idea of this embodiment is to use international and national standard codes to replace original character string information, store the known city codes and longitude and latitude information in the database in advance, and only store the codes of the city information and the longitude and latitude offsets when storing the location information, so as to reduce the data volume.
The situation shown in table 1 is that after the city information is acquired according to the current longitude and latitude coordinates, if the city information is acquired, the code corresponding to the city name and the longitude and latitude offset of the current position from the city are used for coding, and the first 32 bits of the coded geographic position are obtained, which describe the coded city information part.
TABLE 1
Table 2 shows that the last 32 bits describe the information of the longitude and latitude offsets of the current geographic location relative to the city where it is located:
TABLE 2
For the geographic location where the city information is not queried, the latitude and longitude are directly stored to ensure the integrity of the data, and the coding mode is as shown in the following table 3:
TABLE 3
When the value of the offset coding identification bit is 1, the geographical position information of the equipment is described in a mode of using city information and offset, and 0 represents that the geographical position information of the equipment is described by using original longitude and latitude coordinates; preferably, in the embodiment, the country code is coded by numbers in ISO-3166-1:2013, and the domestic city code can be an administrative division code (10/31 days as far as 2014) issued by the State statistics office 2015 at 4/15, which can describe administrative divisions in and above county. And directly coding the original longitude and latitude without inquiring the city. Here, a brief description will be given of a manner of encoding using only latitude and longitude coordinates of a geographical location: the longitude is within +/-180 degrees, the latitude is within +/-90 degrees, six significant digits are reserved, and the accuracy is up to a meter, so that complete data can be stored by using 30 bits. The details are shown in table 4 below:
TABLE 4
| Position of | 1 | 2 | 3-30 |
| Examples of the invention | 0 | 0 | 0111001011000001011100010000 |
| Shaping machine | 0 | 0 | 120330000 |
| Means of | Sign bit | Retention | Longitude or latitude |
As shown in fig. 2, the system according to this embodiment includes three parts, namely a server, a terminal and a device, which are connected through a router, where the terminal is responsible for positioning and encoding, the server is used for storing city information, and the terminal is used for storing encoded geographical location information.
Based on the system structure, the process of encoding the geographical location of the device in this embodiment is shown in fig. 3, and may specifically include the following processing:
firstly, ensuring that a controlled device and a control terminal are connected under the same router;
and opening a positioning function of the terminal, acquiring the current longitude and latitude coordinates, and if the user is not satisfied with the automatically acquired coordinates, adjusting the coordinates on a map.
The terminal inquires common city information in a pre-installed database according to the geographical position information obtained by positioning;
judging whether the city information is inquired or not, if the city information is successfully acquired, carrying out longitude and latitude offset coding, and otherwise, requesting data from a server; if the server returns the city data, the offset coding is carried out, otherwise, the longitude and latitude coordinates obtained by positioning are used for coding;
the terminal stores the encoded data to the device.
Example 3
This embodiment provides an apparatus for encoding geographical location information of a device, where the apparatus is used to implement the method for encoding geographical location information of a device provided in the foregoing examples 1 and 2, and the apparatus may be integrated in a terminal or an apparatus, and fig. 4 is a structural block diagram of the apparatus 40, as shown in fig. 4, including the following components:
an obtaining module 41, configured to obtain current geographic location information by a device;
the encoding module 42 is configured to encode the obtained geographic location information with a code corresponding to the geographic location;
the code corresponding to the geographic location may specifically include: the names of cities and administrative areas of lower levels of the cities correspond to administrative division codes thereof, and the country names correspond to internationally uniform country codes.
A storage module 43 for storing the encoded geographical location information in the device.
Wherein, the encoding module 42 is specifically configured to:
and coding by using the codes corresponding to the geographic positions and longitude and latitude offsets of the geographic positions relative to the city where the geographic positions are located, or coding by using longitude and latitude coordinates of the geographic positions to obtain coded geographic position information.
Further, the obtaining module 41 is specifically configured to: acquiring current longitude and latitude coordinates, and acquiring the name of a geographic position according to the longitude and latitude coordinates; based on this, the encoding module 42 is specifically configured to: and if the city name of the geographic position is acquired according to the longitude and latitude coordinates, the city name and the longitude and latitude offset of the geographic position relative to the city where the geographic position is located are used for coding, and if the city name of the geographic position is not acquired according to the longitude and latitude coordinates, the longitude and latitude coordinates are used for coding.
The encoded geographic location information may specifically include: the identification position, the country code, the city code and the longitude and latitude offset of the geographic position relative to the city in which the position is located or the longitude and latitude coordinates only comprising the geographic position of the encoding mode.
Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, and the scope of the invention should not be limited to the embodiments described above.
Claims (6)
1. A method for encoding geographical location information of a device, comprising:
acquiring current geographical position information of equipment;
coding the obtained geographic position information through a code corresponding to the geographic position;
storing the encoded geographical location information in the device;
wherein the code corresponding to the geographic location comprises:
the names of cities and administrative areas of lower levels of the cities correspond to administrative division codes thereof, and the national names correspond to internationally uniform national codes;
the acquiring current geographical location information of the device includes:
acquiring current longitude and latitude coordinates, and acquiring the name of the geographic position according to the longitude and latitude coordinates;
the encoding of the obtained geographic position information by using codes comprises the following two encoding modes:
and if the city name of the geographic position is obtained according to the longitude and latitude coordinates, the city name and the longitude and latitude offset of the geographic position relative to the city where the geographic position is located are used for coding, and if the city name of the geographic position is not obtained according to the longitude and latitude coordinates, the longitude and latitude coordinates are used for coding.
2. The method of claim 1, wherein encoding the obtained geographic location information with a code corresponding to the geographic location comprises:
and coding by using a code corresponding to the geographic position and longitude and latitude offsets of the geographic position relative to the city in which the geographic position is located, or coding by using longitude and latitude coordinates of the geographic position to obtain the coded geographic position information.
3. The method according to any one of claims 1 to 2, wherein the encoded geographical location information comprises:
the identification position of the coding mode, the country code, the city code, the longitude and latitude offset of the geographic position relative to the city in which the geographic position is located or the longitude and latitude coordinates only comprising the geographic position.
4. An apparatus for encoding geographical location information of a device, comprising:
the acquisition module is used for acquiring the current geographical position information of the equipment;
the encoding module is used for encoding the acquired geographic position information through a code corresponding to the geographic position;
a storage module for storing the encoded geographical location information in the device;
code corresponding to the geographic location, comprising:
the names of cities and administrative areas of lower levels of the cities correspond to administrative division codes thereof, and the national names correspond to internationally uniform national codes;
the acquisition module is specifically configured to:
acquiring current longitude and latitude coordinates, and acquiring the name of the geographic position according to the longitude and latitude coordinates;
the encoding module is specifically configured to:
and if the city name of the geographic position is obtained according to the longitude and latitude coordinates, the city name and the longitude and latitude offset of the geographic position relative to the city where the geographic position is located are used for coding, and if the city name of the geographic position is not obtained according to the longitude and latitude coordinates, the longitude and latitude coordinates are used for coding.
5. The apparatus of claim 4, wherein the encoding module is specifically configured to:
and coding by using a code corresponding to the geographic position and longitude and latitude offsets of the geographic position relative to the city in which the geographic position is located, or coding by using longitude and latitude coordinates of the geographic position to obtain the coded geographic position information.
6. The apparatus according to any one of claims 4 to 5, wherein the encoded geographical location information comprises:
the identification position of the coding mode, the country code, the city code, the longitude and latitude offset of the geographic position relative to the city in which the geographic position is located or the longitude and latitude coordinates only comprising the geographic position.
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| CN107196935B (en) * | 2017-05-19 | 2020-04-17 | 山东顺国电子科技有限公司 | Positioning information transmission method and system |
| CN109213940B (en) * | 2017-06-30 | 2021-02-02 | 武汉斗鱼网络科技有限公司 | Method, storage medium, equipment and system for realizing user position calculation under big data |
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