Disadvantages of dead reckoning can be considered the need for correction of accumulated errors of measurement parameters movement as a whole rather large dimensions of the onboard equipment, lack of affordable small-sized components for creating on-board equipment (accelerometers, autonomous schisliteley traveled path, sensors direction), the complexity of processing parameters of motion to calculate the coordinates in the onboard computer. The most promising area of application of such methods can be considered a joint use with radio navigation techniques, which will compensate for the shortcomings of one as much as other methods. Conclusion Even a brief review of methods and equipment positioning allows us to conclude that there is no universal system that can satisfy all the requirements of the end user. The task of creating effective working positioning systems is a much wider choice of a particular method. We can distinguish The following problems system-wide plan that must be considered customers and developers of such systems. Of great importance is the presence on the territory of the proposed deployment of appropriate infrastructure for the creation of a subsystem data.
Thus, the presence of computing and broadcasting correction data for the navigation apparatus in differential mode (similar, For example, the system radiomayakovoy U.S. Coast Guard) will significantly improve the accuracy of positioning using gnss without significant complication of onboard equipment. The presence of mobile connection with the cellular and microcellular structure will reduce the capacity of the onboard transmitter, which reduces the dimensions of equipment, simplifies the issues of energy supply (especially in a secretive mode setup), makes it difficult Detection of airborne equipment by hackers. In turn, the structure of microcellular communication systems can become the basis for the construction of zonal positioning systems, or will address locating 'Radiopelengation' methods. Separately, there are issues of creation of electronic maps that are intended to be used with avl systems, updating them.
Often, geographic information systems used to solve problems positioning than conventional mapping functions should serve as data correction, conversion of data from different coordinate systems, the logical binding trajectories of mobile objects to elements of the transport network based model of the mobile object. From this perspective, the benefits will have those systems in which organized surgical correction of road conditions, up to the accounting information traffic jams in some areas highways. Companies taking responsibility for security of the person or property, using the positioning system should solve the problem of information and legal interaction with power structures that provide physical safety or return of property. Equipment for mobile teams means of access to information databases, tools Automated positioning and targeting can significantly improve their efficiency. The solution to all these problems will create AVL-system, the most satisfying customer needs and able to promptly return the funds spent on development and implementation of the system.
(Function lock all doors, feedback, autostart – it is for your convenience), 2) Reservations glasses. Book glasses – it's actually the same tint, but the film is much thicker and break the glass improvised means (motorcycle helmet, such as usual), it becomes impossible. Protection against 'hijacker layman "with them harder, they are not just stole a car and already know what's what. So how can we resist them? What they are doing or trying to do, to steal car? 1) Breaking Glass. Defense: Book of glass, alarm system with siren, which will attract attention until the thief tries to break the glass, and 2) Open the hood. Defense: mechanical lock on the hood, and 3) start the car.
Defense: immobilizer (with an identification mark, or fingerprint reader), 4) To go by car. Defense: mechanical lock the steering shaft and / or mechanical locking gearbox. Protection from 'professional thief' How sadly, but such does not exist. "Masters" of his case will be within a month to track down the car and pick a convenient time. Typically, such hijackings occur on demand and in the quality of the work is not so good doubt. But they can interfere, thus increasing the chance that your favorite car will be in place, the truth means to do so is not cheap.
What can I do? Any remedies car – this time for professional thief! Means necessary to put that protection, which takes the most time at the intruders: 1) All the above funds, 2) a satellite tracking system for the car, 2) Manual alarm system 'Tehnoblok. What to choose? Adding a bit of concrete, based on our experience we can advise: Alarms Star Line, in particular Star Line Twage A9, Star Line Twage B6, Star Line Twage B9. Alarm 'StarLine "refer to systems of high technological level extensive protection, anti-theft and service capabilities. Well as to the merits of these alarms can be attributed the relatively low prices. Immobilisers: Black Bug Super and Black Bug Biocode. Mechanical anti-complexes: Dragon, Mul-T-Lock, Garant, Tehnoblok (TECNOBLOCK). Gsm-ins: Reef GSM-2000, Reef GSM-3000 satellite tracking systems: Cesar Satellite, CobrConnex All of the above remedies can and should be combined and then choose what you like, but remember that the best protection – complex.
Do the following: Check the date of issue – good tires for a long time not lie. Perform hand on the inner surface of the tire. All buses in the production of talc. If it is on the bus there, then someone has it washed, And why? Tell me, who just wants to wash the bus, especially from the inside? Something is unclean. Typically, bus wash to get rid of the label of marriage. In any case it is better not to risk it and do not buy a bus. Check the quality of condition for this, locate the protruding piece of fin and pull it.
With good tires, this piece should be lengthened by at least twice. Then release the drawn piece, he should quickly take its original size. After this check the stamp of the tci. He was always a light color. Sometimes on the bus can be found a few bright points – is the mark of the intermediate control during production. And, finally, carefully inspect the place bus, which she planted on the rim. The fact that tci with defective tire marks them at this point paint.
But unscrupulous sellers are buying on the cheap this product, wash off the paint and sell. Look closely, there are no remnants of paint, and if anything you'll find three Think twice before buying a rubber. So: red paint rubber having cosmetic defects, in principle, it is not dangerous, but not luxurious. Yellow paint tires in violation of composition of rubber compound. And green paint rubber, having internal defects. Tires, labeled green and yellow paint, you can not fly unless, of course, do not rush to play in the box. First of all you need to determine bus Which category you need. Highways (HIGHWAY) tires designed for driving on wet or dry paved roads. The use of such tires in the winter on the ice or snow is unacceptable, because they do not have the necessary coupling properties. Winter (SNOW or mud + snow – M + S) tires provide maximum traction when driving on snow and ice. Protector has a distinctive pattern, which provides removal of snow from the area of the contact, and is characterized by elevated traction, and the use of special components in rubber compounds contributes to the preservation of their properties even at very low temperatures. However, the improved coupling properties are usually accompanied by a decrease handling on dry surfaces as a result of increased internal friction, as well as higher levels of traffic noise and sufficiently rapid tread wear. All Season (ALL SEASON) tires combine excellent grip on wet or snowy roads with adequate handling, comfort and durability in the motion of the tread. Speed (PERFORMANCE) tires designed for use on high-end cars. These tires are designed to provide increased grip and greater control. Furthermore, owing to special conditions of operation, high-speed tires must withstand considerable temperature loads. Motorists who buy high-speed bus, are usually willing to accept some inconveniences associated with less comfort and a rapid depreciation in exchange for excellent handling and traction with the road.