one,Principles of mobile phone navigation

mobile phone navigation is divided into work through GPS modules, navigation software, and GSM communication modules to complete.

1. GPS module completes data collection such as search tracking and positioning speed of GPS satellites.

2. The navigation software map function obtains the location information of the GPS module and constantly refresh the electronic map, so that we constantly move our position on the map.

3. navigation software path guidance calculation function, plan a walking route that reaches the destination according to our needs, and then guide us to walk towards the destination.

4. The GSM communication module completes the communication function of the mobile phone, and can process the collected GPS data according to the mobile phone function and upload the designated website.

2. precautions

mobile phone navigation is that the mobile phone must have general communication functions and navigation functions. There are many mobile phones with navigation functions. The key to buy navigation mobile phones is to pay attention to the following points:

1. Whether the screen is large enough, because the screen is small, it can't be seen clearly, it is inconvenient to use.

2. Whether there is an electronic dog function. The so -called electronic dog function is the reminder function of the monitoring system. It can remind you how many meters in front of you have speed measurement monitoring in front of the vehicle.Do not run through the red light, and so on, which is very practical.

3. The map should be able to update, because the roads will change each year, such as new roads, adjustment of single and double lines, etc., so the map of navigation in the mobile phone must be changed, otherwise it will be inconvenient.

4. Determine whether it is a GPS mobile phone, or an A-GPS mobile phone, the GPS mobile phone is high accuracy, and the A-GPS mobile phone accuracy is slightly lower.

5. Confirm whether the mobile phone navigation will generate other costs during use, such as network traffic fees or GPS software usage fees.

3. Common mobile navigation providers

Figure Bar navigation

The first batch of Beijing Tu Bar Technology (Beijing Tu is Xian Technology Co., Ltd.), which has obtained electronic map licenses. It is the most professional electronic map service provider in China. It was established in 2004. It is a leading industry in the industry that is jointly invested by well -known internationally renowned venture capital institutions.High -tech enterprises.Tu Bar Technology has established a well -known electronic map brand -Tu Bar, and has achieved international professional standards in mobile maps, navigation products and services.The map bar establishes the industry's largest update and timely map information (POI) database and bus line database to fully meet the query and line inquiry of various living information of users.With the significant characteristics of online high -speed browsing, quick query, accurate lines, navigation optimization, and comprehensive data.

Kaelid navigation

Kaelid is a high -tech enterprise based on geographical information data, based on land resources, system platforms, and navigation systems as the three major business pillars.Essence

In the field of GIS applications, Kaelid uses the original space information processing technology to help customers understand the value of geographical information with data visualization and visualization of thinking and make visionary decisions.According to international software engineering standards, Kaelid has developed I-Spatial platform with independent intellectual property rights, X-Bridge, and e-government platform X-Bridge. On the basisProducts; on the basis of geographical information data, Kaelid took the lead in extending business scope from government decision -making support, industry applications to personal GPS navigation applications, and continued to lead the development of the industry.

Gaode

Gaode is the leading domestic digital map content, navigation and location service solutions.Since its start in 2002, various businesses have developed rapidly and have been successfully listed on the Global Seasteak Global Market in the United States on July 1, 2010.

Based on the national and high -quality navigation map database, Gaode accumulates innovation in product, services and business models with rich technical accumulation, and builds a "map cloud service" platform that can cope with various customer types and product forms.Gradually formed a strategic business structure of "four screens and one cloud".The company will closely seize the huge opportunities brought by the mobile Internet for the location service industry. Relying on the leading position in the automotive navigation market, we have strongly entered the public application and service market, and strive to achieve the strategy of establishing a "mobile life service portal".

Tencent Map

On July 9, 2014, Tencent Map officially released the "zero traffic map", covering the two mobile platforms of Android and iOS, becoming the first map product in the industry to achieve real zero traffic and full offline.Use the problem of the map.

China Mobile

"China Mobile's mobile phone navigation" is a mobile navigation client software launched by China Mobile. It provides location -based travel information services, including the current or designated locations of maps, information query, bus or driving route inquiry and guidelines.Practical display, real -time traffic road conditions, positioning family positions, one -click traffic and other practical services.

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Common basketball shoes slow shock technology

1. Abzorb -New Balance

The shock absorption materials developed with DuPont can absorb more than 99%of the ground reaction force, avoiding the improperly reaction force of the spine, knees, and ankles, causing exercise damage.At the same time, convert the absorption of countermeasures into the advancement of the next movement to help save energy.

2. adiprene

Adiprene is made of EVA materials for re -arranged molecules after high temperature decomposition. It is usually placed and placed in areas where you need buffer to enhance the stability and protection of your feet. It is a common rear palm vibration technology commonly used in Adidas.

3. adiprene

Compared to Adiprene, this guy with a plus number is more flexible. It is often used in the forefoot area. It not only has excellent cushioning performance, but also the elastic performance helps the feet to be faster during the startup process.

4. Air

Nike developed professional sports shoes slow shock gas cushion.The main type of aurtex is used to create a airbag wall. Among them, filling high -pressure special macromolecular gas is often placed in the bottom of the sneakers.When the air cushion is impacted, it can quickly buffer and has the characteristics of light quality and plastic.Over time, Nike Air has also evolved various upgraded models, which has always been the mainstay of Nike sneakers cushioning technology.

5. Air Sole

AIR Sole, which was released in 1979, was the original form of Nike Air. It was made into a tough synthetic rubber layer in a high -pressure manner and placed it in the midsole to achieve the purpose of cushioning.Nike Air Tailwind is the first sneakers with Nike Air air cushion.

6. Air Max

In 1987, the birth of Air Max 1 not only increased the capacity of the cushion, but also showed this mysterious black technology in a visible way.

7. Blade -Blade

Adidas devoted to a new midsole cushioning system developed for 6 years.The traditional EVA midsole structure is abandoned, and multiple polymers are arranged in the shape of "blade", which has a strong energy feedback effect.

8. Blow Molded Air

Blow plastic air cushion.The low -voltage Air Max air cushion is integrated into the support structure and the representative shoes are Air Jordan 16.

9. Boost

Boost is the product of ADIDAS and the global chemical industry giant Germany BASF Chemical Corporation in cooperation in 2007.TPU (plastic polyurethane) is split into thousands of micro -energy capsules like popcorn, so that it has a very strong rebound effect.

10. BOUNCE

In the early days, adidas Boundce used the -type TPU midsole to cushion and rebound. Representatives of the shoes include Garnett's Adidas Bounce Garnett 07 and TS Bounter Commander.In recent years, Boundce has changed its domineering appearance and evolved into a mid -bottom EVA cushioning material, representing the shoes of Lillard's new boots DAME3.

11. C-CAP

New Balance compressed the multi -layer EVA foam into the midsole inverted mold, so that the midsole has a soft cushioning function.

12. Cage Zoom

External visible Zoom Air, with a larger capacity and an excellent cushioning performance.Represents shoe Zoom Miller, LeBron 2, etc.

13. Cell

Since PUMA Trinomic, Puma has launched a improved version of the honeycomb air cushion Cell. Depending on the force, the size and thickness of the midsole hexagonal honeycomb airbag have been adjusted.

14. CHARGED CUSHION

As the current UA's main cushioning technology, the Charged cushioning squeeze the EVA density and adjust it, converts the impact force when landing into the explosive power, bringing a softer cushioning experience.

15. Dynamic Motion X (DMX)

Moral cushioning airbags.DMX is an airbag cushioning technology developed by Libu.Early, including DMX6, DMX10, etc., the number represents the number of airbags.DMX Mega, DMX Micro, etc. also appeared later.Due to the limitations of technology, the initial feeling of DMX is surging, but with the passage of time, it will occur in dryness and leakage.In particular, the DMX Ride and DMX FOAM launched in the later period have different concepts of the early DMX liquid airbags, and become the midsole structure of cushioning glue.

16. Feet you wear

Tiantia is an adidas a sports shoes design concept, first in 1997.From EQT 2000, which is used in the first pair of "Tiantia" technology to end to the end of KB8 III, the "Tiantia" technology has experienced the end of only 8 years of history.The technology of technology requires the authorization of the ownership company. Because the renewal fails to reach an agreement, the classic little face today has become the most nostalgic sign for shoes fans.

17. Flight Plate

Place a tough PEBAX buffer plate above the Zoom cushion. In strenuous exercise, the pressure of the feet is concentrated on the PEBAX and then applied to the ZOOM area to achieve a larger air cushion rebirth and sensitivity.Because this technology is to obtain a larger air cushion deformation space, the UNLOCKED ZOOM air cushion is used, so that the problem of air cushion drum Bags may occur during the process of wearing.

18. Hexalite

As Reebok's most traditional cushioning technology, Hexalite is composed of countless hexagonal hives. When it is impacted, the hive wall will rely on its own hexagonal structure to contrast and rebound, playing a buffer role.At the same time, because it is also a air cushion method, it has the characteristics of light quality.

Disclaimer: The above method stems from the index of the program system or the sharing of netizens. It is for your reference only and does not represent the research perspective of this website. It proves that it is valid. Please pay attention to the authenticity and authority of the source of the content of the content.Apply to delete & gt; & gt; error correction & gt; & gt;

1. What are the functions of intelligent Riding glasses?

smart Cycling glasses, as the name suggests, are smart glasses prepared for riders. It is both a ride glasses with protective functions and wearable smart devices. The functions of smart Riding glasses include:

1. There is a camera between the eyes, which can be recorded in real time, recorded the cycling video or picture, and uploaded it to the social media.

2. smart Cycling glasses are equipped with a miniature display, which can display various data during cycling, such as cycling speed, calorie consumption, heart rate, etc.; And it has the function of reducing glare, which can be seen even under the sunlight.clear.

3. This intelligent Riding glasses use voice extraction technology. The mirror legs provide two Bone sensors, which can provide users with cycling help by cycling voice prompts.

4. smart Cycling glasses can also be connected to smartphones, temporarily as a terminal device, which can display the incoming person's ID, notification and social network reminder.

In general, there are still many functions of smart Riding glasses, so is it necessary to buy smart Riding glasses?

2. Is it necessary to buy smart Riding glasses?

Although smart Riding glasses have many functions, there are certain defects:

1. Technical restrictions, the technology of intelligent Riding glasses is not particularly perfect.

2. smart Cycling glasses can display information with display screens with glasses, which may have certain hinders of cycling security.

3. The battery life of intelligent Riding glasses is worrying. Considering that many friends are ride on long -distance ride, smart Riding glasses need to be charged after a period of time, otherwise they can only be used as ordinary Cycling glasses.

4. The price of smart Riding glasses is relatively expensive. It costs at least a few thousand yuan, which is much more expensive than ordinary Cycling glasses. Most of them are just enthusiasts. If they are not professional training, they do not require these functions.

In summary, for most of the newly started riders or friends who just like riding, smart Cycling glasses are still more delicious, and there are not much necessary to buy.

[mobile phone GPS positioning] Base station positioning and GPS positioning which are the best and disadvantages of the two mobile phone GPS positioning methods.

There are two types of positioning technology, one is a positioning based on GPS, and the other is the positioning of the base station based on the mobile operation network.The GPS -based positioning method uses the GPS positioning module on the mobile phone to send its own position signal to the positioning background to achieve mobile phone positioning.The base station positioning uses the calculation distance of the base station's distance to determine the location of the mobile phone.The latter does not require the mobile phone to have GPS positioning capabilities, but the accuracy depends to a large extent on the distribution and coverage of the base station, and sometimes the error will exceed one kilometer.The former has high positioning accuracy, but the GPS satellite signal penetration is weak, so it cannot be used indoors and consumes high power consumption.In addition, there is a way to use WIFI to locate in a small area.

1. GPS positioning:

Advantages: high positioning accuracy; free interface can be called at any time; global positioning.

Disadvantages: Applying mobile phone traffic and GPS functions in mobile phones, which consumes more power; the signal can penetrate poorly, and the thickness of the cloud layer has an impact on the signal; the indoor cannot be located.

Positioning method: The positioning request is initiated by the GPS terminal, and the initiative is in the terminal.The terminal does not want to ask for positioning that is to uninstall the system pre -installed or close the GPS to terminate.GPS is positioned as a request request, and the server cannot actively locate the position of a terminal.

Application environment: car navigation, aviation, shipping, website Business Services, etc.

Product Case: Kailid's vehicle navigation system

2. Base station positioning

Advantages: high positioning rate; no software; no traffic; no environmental environment can be located.

Disadvantages: The positioning accuracy is low, and the positioning of high -level office positioning is poor. The positioning depends on the mobile phone SIM card.

Positioning method: The terminal cannot actively locate. The terminal device only requires a SIM card. It does not need to make any settings. The server has positioning control power to accurately position the location information of a certain terminal device at any time.Since the positioning of the base station is lost to the ground positioning, the positioning accuracy depends on the signal tower, and the high -level office will affect the signal.The positioning of the base station has the characteristics of compulsory positioning. It needs to be opened by the operator's authorization and the positioning of its port docking and usage positioning. At present, it is only authorized by enterprises and institutions.

Application environment: supervision of corporate personnel, Outdoor emergency rescue, logistics

Product Case: Enterprise Effect Mobile Positioning System

There are certain restrictions on the use of positioning technology alone. The combination of mutual combination to supplement each other's deficiencies can achieve better results. GPS is relatively well known to the public.Positioning.Different from industry characteristics and application scenarios, the positioning of base stations plays a very important use in practical applications.

The communication operation high will provide corresponding location services. Each of the three major communications operators across the country has an independent location service package. It mainly solves local needs and requires that the mobile phone number must be unified.

3. The difference between GPS is positioned on mobile phone positioning

GPS positioning, GPS navigation, the application of these GPS has gradually made GPS technology well -known. Many smartphones have new tricks to attract everyone's attention, and mobile phone GPS came into being.The name of the mobile phone GPS is the function of realizing the GPS on the mobile phone. One is GPS navigation and the other is the GPS positioning tracking.GPS and mobile phone positioning are no stranger to many users who use smartphones.

Mobile GPS, which is a GPS positioning navigation function implemented on the mobile platform. With the development of technology, there must be more applications.This is easy to understand that in addition to the basic functions of text messages, calling, taking pictures, MP3 and other basic functions such as mobile phone communication, you can also use your mobile phone to achieve GPS positioning navigation.GPS mobile phones are also mobile phones with navigation functions, so GPS mobile phones can also be called GPS navigation phones or mobile phones with GPS navigation functions.

What is mobile phone positioning

mobile phone positioning refers to the location information (latitude and longitude coordinates) of mobile phones or end users through specific positioning technology, and marked the technology or service of the position of the positioning object on the electronic map.There are two types of positioning technology, one is based onGPS The positioning of the positioning is based on the base station of the mobile operation network.based on GPS The positioning method is to use the mobile phone GPS The positioning module sends its own location signal to the positioning background to achieve mobile phone positioning.The base station positioning uses the calculation distance of the base station's distance to determine the location of the mobile phone.The latter does not need a mobile phone to have GPS Positioning ability, but the accuracy depends to a large extent on the distribution and coverage of the base station, and the error will exceed one kilometer.The former has a higher positioning accuracy.Also use wifi Positioning in a small range.

The principle of mobile phone positioning

mobile phone positioning refers to through the wireless terminal(( cell phone Cure Coordinate with the wireless network to determine the actual location information of the mobile user (( Lepatinity coordinate data, including 3D data Cure ,pass SMS As well as MMS Voice is sent to users or provides some value -added services based on this.Positioning service is also called mobile location service (Location Based Service ,, LBS) , It is the network of telecommunications mobile operators (( like GSM net, CDMA net Cure Get the location information of mobile terminal users (( Latitude coordinates Cure With the support of the electronic map platform, it provides users with a value -added business for corresponding services.

mobile phone positioning is usedGSM The honeycomb technology of the mobile communication network to realize the location information query, GSM The wireless communication network is built from many communities like bee honeycomb. Each community has its own number. You can know the area where the mobile phone is located through the identification number of the mobile phone.At present, the positioning technology of mobile phone communities is still perfect, and the accuracy range in the urban area is roughly 200 About rice, the accuracy range of the suburbs is roughly 1000 rice ~ 2000 With around the rice, with the continuous development of the technology of mobile companies, I believe the accuracy will be further improved to further 50 Within rice.At the same time, the landmark name displayed at the same time is still optimized. As further optimization, the landmark will be more accurate.

Honeycomb positioning technology also belongs to the LBS base position positioning. This positioning method is commonly known as the ground positioning system because it relies on the signal tower distributed by the operator to obtain the latitude and longitude information to determine the position of the terminal.As long as all mobile phone cards are in the activation state, and can normally receive calls, they can be accurately located. Strong positioning capabilities, positioning signals can effectively penetrate the building, basement, and tunnel traffic.Each mobile phone card has the only identification code, just like a phone call, each number is the only point to the fixed mobile phone, the LBS base station positioning can also effectively find a fixed number through this recognition code to find a fixed number numberThe location of the mobile phone is presented to the electronic map. Such positioning technologies are compulsory and are widely used in some regulatory fields.

Features of mobile phone positioning

1 High coverage

On the one hand, the range of coverage is large enough.On the other hand, the scope of coverage includes indoor.Most of the time users use this function in the room, from high -rise buildings and underground facilities must be covered to each corner.According to the scope of the coverage rate, mobile phone positioning can be divided into three types of coverage services: the entire local network, covering some local networks, and providing roaming network services types.In addition to considering the coverage rate, the environmental factors of the network structure and dynamic changes may also make a telecommunications operator unable to guarantee services in local or roaming networks.

2 , Positioning accuracy

mobile phone positioning should provide different accuracy services according to the different user service needs, and can provide users with the right to select accuracy.For example, the United StatesFCC The positioning accuracy launched is 50 The probability within the rice is 67% , Positioning accuracy 150 The probability within the rice is 90% EssenceOn the one hand, the positioning accuracy is related to the positioning technology adopted, and it depends on the external environment of the business, including the radio communication environment, the density and geographical location of the base station, and the equipment used in positioning.

The role of mobile phone positioning

1. Parents position the elderly and children

It is mainly due to the needs of security and care. It is installed on the mobile phone of the elderly and children. Once lost, send a text message to get the specific map location of the elderly and children.

2 , Enterprise Management of Vehicle

GPS The signal is transmitted through satellite, restricted by the cloud layer and obscuration, there will be no signal in cloudy, basement, and tunnels to generate blind spots.Based on sim The positioning technology of the card is what we call the ground positioning -the enterprise effective LBS The positioning of the base station can effectively feedback the location information on the location on the ground. LBS The base station positioning saves the terminal cost, and the existing mobile terminal can be used directly, which saves the entire project cost. LBS Suitable for regulatory positioning requirements, and continuous positioning communication tariffs are relatively high.

3 The management of employees by enterprises

It can provide management for sales companies with multiple branches and work hours of sales staff. ; Mainly use base station positioning, which can be positioned with foreign duty employees to achieve mobile attendance, itinerary management, trajectory inquiry, visit management, etc., improve employee work efficiency, and reduce travel costs.

4 , Make remote decoding

The internal program where the opponent's number is located or fixed -line is bound to his number. After the binding, you can perform unlimited distance monitoring, interception, and positioning function.

What are the ways of mobile phone positioning

1. GPS position

Actually, I do nt need to say, everyone must know, first of allGPS Positioning, in general, the current mobile phone chip is supported GPS The positioning, that is, you don't want to support it, you can't be positioned.

2. WIFI position

Thenwifi Positioning, each wifi There is a unique one mac Address, when the mobile phone is turned on wifi At that time, it starts scanning and collecting surrounding routers wifi Signals, upload their location information to the server to form a huge hot spot position database.

This iswifi position.Although you can close it in theory, some you can't close it, because some software is like checking the household registration, you must support positioning to use.

3 , Base station positioning

There is also a positioning method, that is, the base station positioning, that is, the base station can locate your mobile phone through your mobile phone card.As long as your phone has a signal, others can track your position by checking which base station has contacted your phone.

In simple terms, at present, the approximate way of positioning is these.