Natural lawn is good or artificial cylinder is good

1. The characteristics of artificial grass and natural grass:

1 , Shock absorption performance: Natural garries requirements are on 50%-70% Between the artificial garries requirements 55%-70% between.

2 Deformation performance: For natural turf, the muddy turf soaked in water is very small or not deformation; 1 arrive 7 Between millimeters.

3 Non -slip performance: Natural garries requirements are on 0.6-1.0 , Artificial Garrier requires 0.6-1.0 Essence

4 Resistance: Natural grass Skin resistance value is 25-50 Names; artificial turf the resistance value is 35-45 Name.

5 , Setting distance: Natural grass leather gliding distance is 0.20-0.55 Mi; artificial turf smoothing distance is 0.25-0.45 rice.

Second, the effect of Artificial lawn and natural turf on the ball

1 , Vertical bouncing height: the value of the natural turf 25%-45% Between; the value of artificial turf is 30%-42% between.

2 , Rolling speed of the ball: The value of the natural garries is 4 rice -10 Mi; the value of Artificial lawn is 4 rice -10 rice.

3 , Bruch of different angle balls: with 25 The corner is landed, the speed of the bounce 50 A kilometer per hour, height 60% arrive 80% Essence

Third, the venue test of artificial grass and natural grass:

1 Slope: Slope of the artificial grass is less than 1.0% ; Natural lawn slope requires less than 0.5% Essence

2 , Flat degree: artificial grass flat flatness 3 Mi Niandong 10 Millimeter, 300 Small within millimeter 2 Millimeter; natural lawns are flat and the qualified value is not greater than 30mm The best value is not greater than 20 mm Essence

3 Water seepage rate: Artificial lawn base infiltration performance is greater than 180 Millimeter / / Hours; natural garries and ground base penetration performance greater than 180 Millimeter / / Hour.

What are the advantages and disadvantages of natural lawns and artificial lawns

Advantages of natural lawns:

1 The natural lawn has unparalleled characteristics. The soft texture of the natural lawn makes the surface of the lawn have appropriate smoothness. The heat generated by friction is within the human body tolerance and will not cause damage to the human body.

2 The natural lawn has moderate hardness and return elasticity. Athletes can arbitrarily make various technical actions without worrying about severe damage because of falling.

3 The natural lawn is composed of green plant gay grass. The stems and leaves are soft and soft. When the human body rubs with it, it will not generate electrical electricity.

Natural lawn disadvantages:

Natural lawns are easily affected by weather. There is no Artificial lawn, high cost, and trouble.

The Artificial lawn is a lawn made of non -life plastic chemical fiber products as raw materials.It is an important way to solve natural lawns such as high strength and extremely unfavorable growth conditions such as excessive strength and extremely unfavorable growth conditions.

Advantages of Artificial lawn:

Compared with natural lawns, artificial lawns have very obvious advantages.

1 , Whether in the cold winter or hot summer, it can be used normally. It is affected by rain and snow, and it is all -weather. 24h Use, especially suitable for school football field or various training grounds with high frequency.

2 , Good durability, a period of normal use of artificial lawns can be reached 10 Over the year.

3 , Low -stage management and maintenance costs, simple maintenance, no need to plant Items No need to trim Items No water Items The indoor can still be green, and winter does not change yellow.

4 The surface layer can be recycled and reuse, which has environmental protection performance.

5 Many international top competitions and domestic competitions are carried out in the Artificial lawn, which will provide greater consistency in terms of results.

6 , Will not cause allergic reactions.

7 The entire lawn is uniform and consistent, and it will not have a bare nude area like a natural lawn.

There are also some obvious disadvantages of artificial lawns:

1 Because most of the chemical fiber materials are used, and asphalt or concrete are used as the grassroots, their surface hardness is large, the cushioning performance is poor, the rebound rate is high, the football rolling distance is short.Back -up strength is easy to cause athlete's ankle or knee injury, which makes the injury rate of the ankle or knee joint on the Artificial lawn is higher than that of natural lawns.

2 The surface temperature changes on the surface of the Artificial lawn is large. If exposed to extreme temperature or under the irradiation of strong ultraviolet rays, some chemicals in the Artificial lawn will change, causing it to change the characteristics in a short period of time, which will be athlete to athletes.Athletic status and environment have a great impact.

3 The Artificial lawn has a corrosion agent and causes some damage to the athlete's body.

The Artificial lawn is an analog lawn made of plastic chemical fiber products as raw materials.It can be used all over the weather, which is affected by rain and snow weather; simple maintenance, low maintenance costs; environmental protection of materials, recycling and reuse of surface layers, etc., are irreplaceable by natural lawns.Therefore, it is very suitable for the use of primary and secondary school sports fields or various training grounds with high frequency. Therefore, artificial lawns are more popular than natural lawns, and more people choose artificial lawns.

Advantages and characteristics of Artificial lawn

First, clean hygiene:

Many parents think that there are more bacteria on the lawn, because the children's resistance ability is poor, and it is not suitable for playing on it. Therefore, these real lawns are gradually replaced by Artificial lawn.There are many benefits to laying artificial lawns. Not only are they safe and healthy, they will not become bare to trample.

Second, all heavenly:

The Artificial lawn is basically not affected by weather and regions. It can be used in extreme climate areas such as high cold, high temperature, and plateau, and has a long service life.

Third, multi -purpose:

The color of artificial lawns is diverse, and durable and non -fading can be matched with the surrounding environment and building complexes. It is a better choice for sports venues, leisure courtyards, roof gardens and other places.

Fourth, laying and maintenance:

Artificial lawn laiding has low requirements for the foundation, and can be constructed on asphalt and cement and short cycles.It is especially suitable for the construction of middle and elementary school venues with long training time and high density.The Artificial lawn is convenient for maintenance, the water seepage performance is good, and it is particularly wear -resistant.

Fifth, excellent physical chemical performance:

After hundreds of thousands of wear trials, the fiber weight is lost by only hundreds of thousands of times2%-3% EssenceIn addition, the tensile, water seepage, and elasticity are high, and after heavy rain 50 It can be drained in about minutes.

Sixth, good security:

The use of the principles such as medicine and sports can make the athletes be protected when they exercise on the lawn, and the ligament, muscles, joints, etc. are protected, and the collision power and friction when they fall are greatly reduced.

Seventh, reduce the workload:

After laying the Artificial lawn, the workload of the staff also reduces a lot. It only needs to be checked regularly to repair the uneven places.

It is worth mentioning that the various strokes of the Artificial lawn sports venue have been formed with white grass seedlings at one time during production.It belongs to environmentally friendly products. It does not contain harmful substances and has noise absorption.The production uses a number of modern science and technology, so that the product's tensile strength, firmness, flexibility, wear resistance, anti -aging, and color fastness have reached a considerable level.

1. What is the electric surfboard

Electric surfboard is a surfboard driven by lithium battery.A built -in lithium battery can provide the motor for about an hour of kinetic energy.At first, the surfing board was used for entertainment, but it was favored by the rescue team and lifeguards soon. The cost of this weight water Tool is low, which is more convenient than ships and jet boards. It can be used for rescue.

2. What is the principle of electric surf board

I have briefly understood what the electric surfboard is, so let's take a look at the principle of electric Surfboards together.

The shape of this surfboard is very peculiar. In addition to the "deck" standing, a longer rod is connected below, and a small water wing is installed at the bottom of the pole.

This wing is the core component of the electric surfboard. It looks like the wing of an airplane. Using the principle of Berinley, the place with a large flow rate is small, so on both sides of the wing wings, it can form obvious pressure pressure on the wings.Difference.

Then under the drive of the propeller, the surfboard can slide forward. When the speed becomes larger, the pressure difference between the sides of the wing wings will increase, so that the surfboard can be lifted out of the water surface.Like "flying" on the water, the operator only needs to master the balance, and the control of speed and direction can be achieved through the remote control in the hand.

What is The insulation box

The thermal Insulation box is the luggage with insulation performance during food delivery.With the improvement of living standards and the leap in the catering industry, takeaway, as a new profit growth point of the catering industry, enjoying all kinds of delicious and natural lifestyles with family members at home, and it is more common in developing countries abroad. It is more common.It is also increasing in China.The thermal Insulation box has attracted the attention of the catering industry with the concept of safety, environmental protection, cold and hot, and convenient carriers.

The insulation box is a food -grade environmentally friendly LLDPE material. It is made of refined after the rotating mold pressure process. It is equipped with a marine stainless steel lock and the bottom is equipped with rubber anti -slip pads.cleaning, good thermal insulation, not afraid of falling, can be used for life.The product is used with ice packs, which has better cold -keeping effect, and the continuous refrigeration and thermal insulation time can reach several days.

What are the types of insulation boxes

1. Bubble Insulation box

The foam box is generally made of polyvinyl chloride plastic, which is mainly used for low -temperature refrigerated transportation. It is seriously affecting the food with it to affect our health. When the temperature reaches 65 C, the harmful substances in the foam plastic will penetrate into the food into the foodAmong them, it will cause damage to human liver, kidney, and central nervous system.

2. waterproof cloth Insulation box

There are many thermal insulation boxes made of Oxford cloth or nylon cloth, strong and wear -resistant, waterproof rubber base, bottom non -slip, and so on.Independent insulation food compartment, configured with pressure -resistant system, food storage is not squeezed.The food cabin is made of aluminum foil, which has the insulation function of insulation and heat insulation through PE cotton insulation.Environmental safety and safety can directly contact food.

3. Plastic Insulation box

Plastic has been widely used in various areas of daily life. Products made of plastic such as plastic Bags, plastic cups, plastic bottles, etc. can be seen everywhere.However, some plastic products sold in the market may release toxic and harmful substances under different temperature, humidity and other conditions, which is not safe.

4. Metal material Insulation box

Metal boxes are one of the multi -functional equipment for cargo units, commodity storage and commodity circulation.Its disadvantage is that it is too bulky, non -demolished, and the edges and corners are easy to scratch the Skin.

5. Wooden Insulation box

Its shortcomings have poor insulation performance.The advantage is that the cost is low, and it seems bulky. It is not convenient for carrying meals, non -demolition, and prone to scratches on the Skin.

What are the characteristics of food insulation boxes

1. Heat resistance and cold resistance: The cold and cold boxes have high requirements for heat resistance and resistance. They will not deform in high temperature water, and can even be disinfected with boiling water.

2, durability: have superior impact resistance, no cracking during heavy pressure or impact, no scratches will not be left, and can be used for life.

3. Seal: This is the first consideration of choosing takeaway boxes.Although different brands of product sealing methods are different, excellent sealing is a necessary condition for long -lasting fresh food food.

4. Fresh preservation: The international sealing measurement standard is evaluated by transmitting humidity testing. The high -quality fresh -keeping box is 200 times lower than the transparency of similar products, which can maintain the freshness of things for longer.

5. Multi-functional and diversity: For designed different sizes for life needs, with reused technology ice packs, ice packs can be kept cold and can be kept heat (the lowest ice pack can be frozen to -190 C, up to 200 C, can be heated to 200 C.Any cut size).

6. Environmental protection: Food -grade environmentally friendly LLDPE materials, non -toxic and tasteless, anti -ultraviolet rays, and not easy to change color.

What is the insulation effect of takeaway insulation boxes?

The insulation effect of the take -out box mainly depends on the following 4 aspects:

1. Qi -density: The impermeable box is more insulated, reducing the heat distribution in the process of air circulation.

2. insulation material: Different thermal insulation performances are different.

3. Infrared radiation: Materials that can reflect infrared radiation with environmentally friendly LLDPE materials, which can delay the distribution of thermal energy.

4. Auxiliary system: It is necessary to be equipped with auxiliary measures such as ice packs, which can be more conducive to insulation.

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. How is the GPS positioning system positioning

The 24 GPS satellites run around the earth at a high altitude of 12,000 kilometers from the ground, so that at any moment at any time, any at all at the ground can be observed at the same time.

Because the position of the satellite is accurate, in the GPS observation, we can get the distance from the satellite to the receiver. Using the distance formula in the three -dimensional coordinates, the three satellites can be used to form three equations to solve the position of the observation point (x X, y, z).Considering the error between the clock of the satellite and the receiver clock, there are actually 4 unknown, X, Y, Z, and clock difference, so the 4th satellite needs to be introduced to form 4 squares to solve, so as to obtain the observation point of the observation pointLavels and heights.

In fact, the receiver can often lock more than 4 satellites. At this time, the receiver can be distributed into several groups according to the satellite constellation, and each group is 4, and then the group with the smallest error is selected by the algorithm for positioning, thereby positioning, so asImprove accuracy.

Due to the errors of satellite Running tracks and satellite clocks, the impact of atmosphere on the signal of the flow layer, the ionization layer on the signal, and the artificial SA protection policy, the positioning accuracy of the civil GPS is only 100 meters.In order to improve the positioning accuracy, the differential GPS (DGPS) technology is generally adopted to establish a reference station (differential table) for GPS observation. The accurate coordinates of the known benchmark station are used to compare the observation values to obtain a correction number and release it outside the outside world.EssenceAfter receiving the correction number, the receiver compares it with its own observation value, eliminates most of the errors, and obtains a more accurate position.Experiments show that the positioning accuracy can be increased to 5 meters by using differential GPS.

vehicle navigation system is mainly composed of navigation hosts and navigation display terminals.The built -in GPS antenna will receive at least 3 data information transmitted from 24 GPS satellites surrounding the earth, thereby determining the current location of the car.The navigation host is matched with the electronic map data determined by the GPS satellite signal to determine the accurate location of the car in the electronic map.

On this basis, various functions such as driving navigation, route recommendation, information query, and playback AV/TV will be realized.Drivers only need to watch the screens on the display and listen to voice prompts, and manipulate the remote control in the hand to achieve the above functions, so as to drive easily and freely.

Global Positioning System is the second -generation satellite navigation system in the United States.It was developed on the basis of the Ziwuyi satellite navigation system, and it adopted the successful experience of the Wuwuyi system.Like the Ziwuyi system, the global positioning system consists of three parts: space part, ground monitoring, and user receiving machines.

According to the current plan, the space part of the global positioning system uses 24 satellites with a height of about 20,200 kilometers to form a satellite constellation.21 3 satellites are near -circular orbit, and the operating cycle is about 11 hours and 58 minutes. It is distributed on the six orbit planes (four on the surface of the orbit), and the orbital inclination angle is 55 degrees.The distribution of satellites allows more than four satellites at any time around the world at any time, and can maintain a good positioning and solving geometric graphics (DOP).This provides continuous global navigation capabilities in time.

The ground monitoring section includes four monitoring stations, one upward injection station and a main control station.The monitoring station has a GPS user receiver, atomic clock, a sensor collected by local weather data, and a computer that processes preliminary data.The main task of the monitoring station is to obtain satellite observation data and send these data to the main control station.The main control station is located at the Vanden Fort Air Force Base.It implements comprehensive control of the ground monitoring department.The main task of the main control station is to collect all observation data of the GPS satellites in each monitoring station, and use these data to calculate the orbit and satellite clock of each GPS satellite.The upward injection station is also located at the Vanden Fort Air Force Base.Its task is mainly to inject such navigation data and the instructions of the main control station into the satellite when each satellite runs to the sky.This injection is performed once a day for each GPS satellite and the final injection before the satellite leaves.

The global positioning system has the characteristics of good performance, high accuracy, and wide application. It is by far the best navigation positioning system.With the continuous improvement of the global positioning system and the continuous improvement of software and software, the application fields are continuously developing. At present, the various departments of the national economy have begun to gradually penetrate people's daily life.

2. Positioning principle of GPS navigation

d1 = [(x1-x2)^2 (y1-y2)^2 (Z1-Z2)^2]^1/2 c (vt1-vt0)

d2 = [(x2-x)^2 (y2-y)^2 (Z2-Z)^2]^1/2 c (vt2-vt0)

d3 = [(x3-x)^2 (y3-y)^2 (Z3-Z)^2]^1/2 c (vt3-vt0)

d4 = [(x4-x)^2 (y4-y)^2 (Z4-Z)^2]^1/2 c (vt4-vt0)

In the above four equations, the coordinates of the measuring point X, Y, Z, and VTO are unknown parameters, where DI = C TI (i = 1, 2, 3, 4).

DI (i = 1, 2, 3, 4) is satellite 1. Satellite 2, satellite 3. Satellite 3. Satellite 3, satellite 4 to receiver.

TI (i = 1, 2, 3, 4) is satellite 1. Satellite 1. Satellite 2. Satellite 2, satellite 3, and satellite 4 signals to reach the time of the receiving machine.

C is the speed of transmission of GPS signal (ie, the speed of light).

The meaning of each parameter in the four equations is as follows:

X, Y, and Z is the spatial right -angle coordinates of the coordinates to be tested.

XI, Yi, Zi (i = 1, 2, 3, 4) are satellite 1. Satellite 1. Satellite 2. Satellite 2, Satellite 3, Satellite 4's spatial right -angle coordinates at the time of T, can be obtained by satellite navigation.

VT I (i = 1, 2, 3, 4) is satellite 1, satellite 2, satellite 3. Satellite 3, and satellite 4 satellite clocks, which are provided by the satellite star calendar.

VTO is the bell of the receiver.

From the above four equations, the clock vTO of the coordinates of X, Y, Z and the receiver at the above four equations.

The basic positioning principle of GPS is: satellite sends its own star parameters and time information uninterrupted. After receiving this information, the user receives the three -dimensional position, three -dimensional direction, and time information of the receiver.

Disclaimer: The above content is derived from the provision of the program system index or the sharing of netizens. It is for your reference only and does not represent the research perspective of this website. 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;

What are the categories of GPS navigator

Classification by the purpose of the receiver

1.navigation receiver

This type of receiver is mainly used for navigation of the motion carrier, which can give the position and speed of the carrier in real time.This type of receiver generally uses C/A code pseudo -distance measurement. The real -time positioning accuracy of the single point is low, generally 10m, and the SA affects 100m.This type of receiver is cheap and widely used.Depending on the application field, such receivers can be further divided into:

car type -for vehicle navigation positioning;

navigation type -for Ship navigation positioning;

Aviation type -for aircraft navigation positioning.

Due to the fast Running speed of the aircraft, the receiver used on aviation requires to adapt to high -speed exercise.

Starry type -for navigation positioning for satellites.Because the speed of satellites is as high as 7km/s, the requirements for receiving machines are higher.

2.Ground -type receiver

The ground -type receiver is mainly used for precision land measurement and precision engineering measurement.This type of instrument mainly uses carrier phase observation values for relative positioning, with high positioning accuracy.The structure of the instrument is complicated and the price is more expensive.

3.Time -type receiver

This type of receiver mainly uses the high -precision time standard provided by the GPS satellite to be awarded, and it is often used in the time of time in the observatory and radio communication.

Classified by the carrier frequency of the receiver

Single -frequency receiver

Single -frequency receiver can only receive the L1 carrier signal, and the carrier phase observation value can be determined.Because the effect of the ionization layer delay cannot be effectively eliminated, a single -frequency receiver is only applicable to the precision positioning of the short -based line (& lt; 15km).

Dual -frequency receiver

The dual -frequency receiver can receive L1 and L2 carrier signals at the same time.The use of dual -frequency delay on the ionization layer can eliminate the effects of ionizing layers on the delay of electromagnetic wave signals. Therefore, dual -frequency receiver can be used for precision positioning of thousands of kilometers long.

Classified by the number of channel channels

The GPS receiving function also receives the signals of multiple GPS satellites at the same time. In order to separate the signal of different satellites received to achieve the tracking, processing and measurement of satellite signals, devices with such functions are called antenna signal channels.The types of channels that the receiver can be divided into: multi -channel receiver; sequential channel receiver; multi -channel multi -purpose channel receiver.

Classified by the working principle of the receiver

Code -related receiver

Code -related receiver uses code -related technologies to obtain pseudo -distance observation values.

Square receiver

The Square receiver uses the Square technology of the carrier signal to remove the adjustment signal to restore the complete carrier signal. The phase difference between the carrier signal generated in the receiving machine through the phase meter is determined by the phase difference between the carrier signal generated in the receiverEssence

Hybrid receiver

This instrument is a comprehensive advantage of the above two receiving machines. It can obtain the code phase pseudo distance or the carrier phase observation value.

Interference receiver

This receiver uses the GPS satellite as a radio power source. The interference measurement method is used to determine the distance between the two measuring stations.

GPS navigator is classified according to use

1As well asnavigation receiver

This type of receiver is mainly used for navigation of the motion carrier, which can give the position and speed of the carrier in real time.This type of receiver is generally adoptedC/ACode pseudo -distance measurement, a single point of real -time positioning accuracy is low, generally10M,haveSAThe influence is100MEssenceThis type of receiver is cheap and widely used.Depending on the application field, such receivers can be further divided into:

car type -for vehicle navigation positioning;

navigation type -for Ship navigation positioning;

Aviation type -for aircraft navigation positioning.Due to the fast Running speed of the aircraft, the receiver used on aviation requires to adapt to high -speed exercise.

Starry type -for navigation positioning for satellites.Due to the high speed of satellites7km/sThe above, so the requirements for receiving machines are higher.

2. Destiny receiver machine

The ground -type receiver is mainly used for precision land measurement and precision engineering measurement.This type of instrument mainly uses carrier phase observation values for relative positioning, with high positioning accuracy.The structure of the instrument is complicated and the price is more expensive.

3. Time -type receiver

This type of receiver is mainly usedGPSThe high -precision time standard provided by satellites is often used in the time of time in the Observatory and radio communication.

Classified by the carrier frequency of the receiver

1. Single -frequency receiver

Single -frequency receiver can only receiveL1Carrier signal, determine the observation value of the carrier phase.Because the effect of the ionization layer cannot be effectively eliminated, the single -frequency receiver is only applicable to the short -based line (& lt; 15km) Precision positioning.

1. Dual -frequency receiver

Dual -frequency receiver can be received at the same timeL1,,L2Carrier signal.The use of dual -frequency delay on the ionization layer can eliminate the effects of ionizing layers on the delay of electromagnetic wave signals. Therefore, dual -frequency receiver can be used for precision positioning of thousands of kilometers long.

Classified by the number of channel channels

GPSReceive functions at the same timeGPSSatellite signals, in order to separate the signals of different satellites received to achieve the tracking, processing and measurement of satellite signals. Meters with such functions are called antenna signal channels.The types of channels that are received according to the receiver can be divided into:

Multi -channel receiver

Order channel receiver

Multi -way multi -use channel receiver

Classified by the working principle of the receiver

Code -related receiver

Code -related receiver uses code -related technologies to obtain pseudo -distance observation values.

Square receiver

The Square receiver uses the Square technology of the carrier signal to remove the adjustment signal,,To restore the complete carrier signal, the phase difference between the carrier signal generated in the receiving machine through the phase meter is determined to determine the pseudo -distance observation value.

Hybrid receiver

This instrument is a comprehensive advantage of the above two receiving machines. It can obtain the code phase pseudo distance or the carrier phase observation value.

Interference receiver

This kind of receiver isGPSAs a radio source, the satellite uses the interference measurement method to determine the distance between the two stations.

go through20The practice of the rest of the year proves,GPSThe system is a high -precision, all -weather and global radio navigation, positioning and timing multi -functional system.GPSTechnology has developed into an international high -tech industry with multi -field, multi -mode, multi -purpose, and multi -model.

MeasuringGPS

The ground -type receiver is mainly used for precision land measurement and precision engineering measurement.This type of instrument mainly uses carrier phase observation values for relative positioning, with high positioning accuracy.The structure of the instrument is complicated and the price is more expensive.According to the use of use and accuracy, it is also divided into static (single -frequency) receiver and dynamic (dual -frequency) receiver.RTKEssence

carGPS

When it is made through hardware and softwareGPSWhen the positioning terminal is used for vehicle positioning, it is called a carGPS,However, the positioning alone is not good, and this positioning information must be passed to the alarm center or on the carGPSWith the holder, we call it a third party.soGPSThe positioning system also containsGSMNetwork Communication (mobile phone communication), passGSMThe network sends satellite positioning information to a third party by SMS.Interpret SMS with a microcomputer and display the location of the vehicle on the electronic map.This realizes the carGPSposition.At the same time, install the corresponding detection sensor on the car, and use the carGPSPositioningGSMThe network communication function can also send the anti -theft alarm information to a third party, or send this alarm phone and SMS directly to the owner's mobile phone, complete the car to complete the carGPSanti -theft alarm.It can be seen here that the carGPSPositioningGSMThe network part is actually a smartphone that can communicate with third parties. You can also seize the vehicle by the driver, and the driver is sent to the third party.So the carGPSPositioning is positioning, anti -theft, and anti -robbery.

Similar carGPS

Similar carGPSTerminals include positioning mobile phones, personal positioners, etc.GPSSatellite positioning is due to the third -party positioning service, so it is necessary/ /Annual service fee.

All currentGPSThere is no navigation function for positioning the terminal.Because the hardware and software need to be increased, the cost is increased.

GPSEarly warning device

GPSThe early warning device is passedGPSSatelliteGPSSet the coordinates in the early warning device to complete, such as encountering an electronic eye, and then set up a coordinate directly below the electronic eye through the relevant device.Before300Early warning will start around Mi, telling the owner that there is an electronic eye test in front of the owner, and it cannot be drove over speed, which plays a warning role.Such accuracy is related to the amount of data points, mainly to achieve the use of satellite positioning.