Components and Features of Central Locking System

Components and Features of Central Locking System Central locking The main function of the central locking system is controlling access authorization at all times but it also must cover the following areas: actuation of opening handles or lifting, braking and locking the doors during closing operation. The central locking system includes following components: -locking bars on the body pillars, -doors, door lock mechanism and dedicated mechanical and electrical parts, -electrical components required to access authorization facility and radio remote control. Depending on their location further dividing being made: -side door assembly, -trunk assembly, -hood assembly, Illustration 1: Central locking system schematic Door assembly consists of catch, pawl and latch. The door lock striker is attached to the body pillar. Under closing operation the door lock striker gets caught by the latch and hold in the closed position and centres the door. The pawl positively locks the catch in position. This lock condition is automatically aborted when opening procedures begin. For this process the forces acting on inner or outer door handle are transferred to the pawl and cause the catch release to open the door. The door lock striker stays in the position while the catch swivels go into an open position. In a case of operation methods central locking system consists of two types of actuators: electromagnetic and pneumatic. Electromagnetic actuators rely on solenoids which lock or unlock doors using current going in both directions (open/closed) through an electric module. On this kind of system two types of arrangements are in use. First one uses separate relays for each of action taking by the system. One dedicated to open and another one to close the door. Both of them are controlled by a transistor switching the circuit operated by the capacitor (storage for energy necessary to operate system) which is releasing current necessary to activate the locks. Another type uses two capacitors and two relays working as a tandem. One pair is responsible for locking and another for unlocking. When the circuit is closed a current is discharged from the capacitor and the lock is either opened or closed. IMAGE Pneumatic actuators are driven by a pneumatic central unit which controls vacuum/pressure pump. When vacuum is applied actuators acting on mechanism lock or unlock the door. The vacuum pump is driven by electric motor which is working in both directions. Forward rotation creates a compressor action (doors open), while backwards rotation creates vacuum (doors close). Polarity on the electric motor is changed by a change-over control switch. IMAGE In most modern cars electrical locking system replaced mechanical unit due to a demand for quality and reliability. The main advantages of electrical locking system are: -symmetrical design, -smaller and lighter in comparison to a mechanical unit -only one lock version per vehicle -individually encoding at the end of the production line -door handles no longer move Other supplementary functions, like an interior light or status indicator, can be easily introduced in electrical locking system because the lock is equipped with electronics, which can carry out these functions. Communications with the locks, power supply and security system take place via data can bus system. Engine immobilisers An immobiliser is an electronic anti-theft security device which prevents engine start by an unauthorised person unless the correct key or fob is placed in the ignition barrel. If the correct key is used, transponder inside the key sends a signal to the reader which transfer signal to the receiver (ECU). If the signal is recognised by the ECU, the system allows user to start engine. If not the immobiliser disables few car systems necessary to start the engine: usually it is fuel injection, fuel pump and ignition components. The immobiliser is strongly connected to the car security system, so any unauthorised access to the car that is detected by the security system (movement detectors, infra-red sensor, sonic sensor and many others, depending on the security system) automatically trigger the immobiliser and any other alarm aims such a horn and flashing headlights. Car alarm can be activated by infra-red signal generated by the fob or a key ring and received by optical sensing unit placed somewhere in the car. Another type is a radio control system. Radio wave is created by the fob or the key and received by car antenna quite often a car heated rear window.   In both examples the signal is unique for each car and only this one signal is recognised by the ECU. Alarm system uses few different types of sensors to protect the car: -shock sensor: detecting any vehicle moment -ultrasonic: car interior is covered by an ultrasonic signal; any change in the strength on the signal pattern activates the alarm -voltage drop or current drain: any drop of voltage (disconnecting the battery) or current drain (by switching on interior light) -infra-red: detecting any disruption of the beam transmitted between two points inside of the car -direct earth contact: detected by the bonnet, boot and door switches when an earth contact happens Diagnosis and repair defect. Make: Vauxhall Model: Vectra B Year: 1999 After connecting central locking rig to the battery I noticed that the locking system does not work properly. Firstly, I checked voltage on the battery, unfortunately it was too low: -12v. To rectify this I connected the battery to the charger. Since then the central locking system starts to perform quickly and properly. After a short while the system stopped working completely. It didnt react to the car key fob. First, I checked the battery voltage inside the key. Multimeter showed the voltage of 3v (battery type-CR2032), which is absolutely perfect. I was looking closely into the key fob for any damage on the electronic circuit or battery holders, but everything was in a proper working order. After that I measured the resistance of each door and readings on multimeter were as follow: Nsf-1 ohm, Osf-1 ohm, Nsr-1 ohm, Osr-1 ohm, According to the Autodata all readings matched the factory range. To be sure about my findings I checked continuity on each of the door and this confirmed my thought that wiring between the doors and the central unit is in a good working order. Last part of my diagnostics was checking the condition of the central unit itself. Firstly, I connected the multimeter to the port No2 and No8 to check voltage transferred from the battery to the central locking unit. Unfortunately the voltage was 0v. Then I checked continuity on the wiring between the central locking unit and the battery. There was no continuity at all. My diagnosis: The wiring between the battery and the central locking unit is faulty.   To rectify this the faulty wiring needs to be replaced. Electrical circuit diagram

House Bunny Movie Review Essay

In the film House Bunny, a 27-year-old girl, Shelley Darlingson, played by Anna Farris, finds herself tricked out of the Playboy Mansion by another bunny for being too old. Shelley winds up at the University of Southern California and becomes the house mother in a very poorly kept sorority house, Zeta Tau Alpha, consisting of six socially awkward girls. After gaining the girls’ trust by showing them she is nice and can attract boys, she does her best to turn the ZTA girls around to be popular beautiful young ladies who are ‘better’ than the other sorority girls. However, the changing of personalities goes too far and the girls realize they’ve changed for the wrong reasons and begin to judge everyone. During the time Shelley is being blamed, she receives a call about how ‘being too old’ was a lie to get rid of her. When expecting Shelley to immediately drop everything and return to the Mansion, she decides to stay the hose mother of the Zetas. U sing this movie I plan on analyzing the movie through different scenes of the typical activities of the sorority girls on campus and comparing them to how college life is today and what could be done differently. Throughout House Bunny, a constant rival goes on between Phi Iota Mu and Zeta Tau Alpha. When Zeta, a now popular sorority, throws a mixer party the same night as popular PIM, all of the girls going through rush and all of the fraternity boys enjoy their evening at Zeta instead of PIM. Girls are initiated at the party through ‘sacrificial rights’ because they still have their virginity, music is played for everyone to dance to, and everyone enjoys their nights. These girls are focused on looking good now and being popular. Girls are very similar but a little different today. In today’s society in the typical college experience, girls are not initiated in this way and girls do not throw the parties. The girls, instead of throwing their own parties, get all dressed up and head out to other fraternities to listen to music, drink and get together with different guys. Several girls nowadays waste their time and throw away their good morals every weekend, when they coul d be choosing better alternatives such as a staying in for the weekend or at least one night and study or relax with some friends. Time management and studying are two of the hardest strategies to master as a college student. Unfortunately when we have free time we cling to more fun activities at all times and then get caught up later when it is the last possible second to do homework and we realize we should have been working on homework rather than partying. Studying is not the most fun activity nor does it sound better than going out with friends to drink or participate in crazy college activities; however, everyone has to do it eventually and it would just be easier if you studied a little every free moment and then you would have more free time later. You would be more successful if you thought about every possible outcome of each choice clearly before doing anything. In the movie, after the Zeta girls become popular and look prettier, thanks to Shelley, they set up a tent at the involvement fair. All of the students rush towards their tent because they have food, games, and calendars of the girls looking t heir best. The Zetas are getting more involved around the campus, as students should, but through popularity not service. From this popularity the Zetas go downhill from there and turn into the popular rude crowd to those who do not ‘belong.’ The Zeta’s stopped being who they were before Shelley became the house mother, the smart, nerdy, different crowd, and became the jerks who judged people off appearances. When trying to decide on bids for their house, they talked about how they had seen one of the girls before and thought they were weird and shouldn’t be allowed in their house. The Zeta’s stopped focusing on academics and their true personalities and tried to change for the ‘better’ when it was clearly for the worse. Involvement is a key to surviving in college. You should get involved to make new friends, find others like yourself, develop study groups, and stress-reliever outlet clubs. However, when you try to be involved with the rest of the campus through primarily popularity and parties, you are getting ‘involved’ in all of the wrong ways. Instead of changing to be the popular crowd by looking hot and becoming a preppy jerk to ‘fit in,’ just express yourself more and get out in the real world to try and make more meaningful friendships that could last a lifetime. If people could be more accepting and friendly instead of being quick to judge, everyone would have more friends and the world would be a better place. Acceptance is one of the biggest problems especially at a college where if you aren’t accepted you just hide from everyone and get discouraged. Everyone as a whole should work to be more accepting of others for who they are. I am not saying everyone has to like everyone else, but I am saying at least give everyone else a chance to shine and join the group. When a smart nerdy group of socially unaccepted girls get a new playhouse bunny house mother they turn into a stereotypical group of rude sorority girls who just want everyone to be in their house so they can be more popular as long as they are ‘normal.’ If people took the time to accept everyone and give everyone a chance, people would have more friends and not be as nervous to try to make new friends. Getting involved on campus is smart as long as you are getting involved in the right ways with the right group of people so you can make a difference in your community. Getting involved also has advantages, because it can help manage time and studying habits or even study groups. Involvement in the college community is smart so good grades can be attained, meaning better opportunities later. Managing your time and taking the time to study receives full benefits later, as well. College is not easy, especially when coming in as a freshman new to the whole idea of college. However, college can be enjoyed and mastered if you try to get involved, study more, accepts more people for who they are, and manage your time to the best of your ability. Works Cited The House Bunny. Dir. Fred Wolf. By Karen M. Lutz and Kirsten Smith. Perf. Anna Faris, Colin Hanks, Emma Stone, Kat Dennings, Hugh Hefner, and Tyson Ritter. Columbia Pictures, 2008. DVD.

Human Impact on Environment Essay

From the moment we wake up to the time we sleep, most of the products used are hazardous to the environment directly or indirectly. A person voluntarily and non-voluntarily spends his day on the expense of atmosphere. Being aware of the dangerous effects of many products that we use, we continue using these products. From pencil that we use in school from the paper used in office and different furniture decorating our house are all made on the expense of surroundings. Most of the luxurious items like fridge, air condition and car all affect our ozone layer. Book Book is something that everyone uses regardless of age. Be it reading, writing, coloring or for references. No one grows up without being around a book. Before the advent of internet books were only available on papers. There was no concept of electronic books. There are a lot of verities available in books. People make their own customized books for any event or refer to them on any subject. Children use it for reading purpose, drawing, coloring and writing. Components of a Book: Any basic book has the following components: †¢ Laminate sheet. †¢ Binder boards †¢ Paper †¢ Ink †¢ Dye (For colored papers) †¢ Thread †¢ Adhesive Paper Paper like we all are aware of is made from trees. These trees are cut in log form and sent to paper production factories. A machine then removes impurities and cut them into small equal sizes of wood chips through a chipper. These chips are then transformed into pulp through chemical pulping (wood chips are cooked in sodium hydroxide and sodium sulfide) or mechanical pulping (logs are beforehand chemically treated and then passed through a metal disk). This process tree oil and eradicate splits cellulose and hemi cellulose from the lignin. The remaining fiber is used to produce paper. Read more:  Effects of Festivals on Environment The cooked pulp is the washed to and processed through a bleaching tower to add brightness. Pulp is the modified and further refined. This pulp is then pressed against a wide screen drains out all the water cut in equal sizes. Fibers are shaped into mats and pressed through heavy rollers and then moved through hot dryers to evaporate excess water. In the end starch is added to fill gaps in the sheet surface. These sheets are then pressed between a roller and cut into smaller sizes for further usage (Essortment, n. d. ). At times clay and dye are mixed with these papers to add shine and color to them. Ink Without printing inks there would be no books, papers or magazines. Knowledge would have had no proper way to being materialized and stored. Ink has four basic components. Pigments are used to color the ink, make it glossy and resistance from being affected by heat and light. It makes t he ink opaque. Some of the pigments used to make ink are extenders, opacifiers, inorganic black, organic yellow, organic orange etc. Resins is another ingredient that combines the ink together into a film and attaches it to the printed surface. It adds to the characteristics of ink being glossy and resistance to heat, chemical and water. They are mainly produced at New Zealand. Few of the commonly resins used ate acrylics, alkyds, rubber resins, phenolics, hydrocarbons, polyamides, shellac etc. Solvent is the third most important element that which keeps ink in a fluid form where it is stored till its being shifted to the background where its being printed. Solvent has to disconnect from its storage body containing ink to be embossed on the surface being allowed to dry and form into proper image. Additives are used to modify the physical attribute of the ink to go with different conditions. Varnish production is the first step in formation of ink. This is obtained through assimilation of resins, solvents and additives to structure a consistent fusion. The longer these components are allowed to react into a bigger molecule, varnish turns out to be more glutinous. Pigments are later added to the varnish which results into cluster of pigment particles. Different machines are used to break these clumps and spread them equally through the ink (Sengenuity, n. d. ). Adhesives Many different types of adhesives are used in bookbinding. Starch, animal glue, emulsion and hot-melt are its few examples. All have chemicals involved in them. Water based emulsion adhesive for instance is made from emulsification and polymerization of acetic vinyl, ethylene vinyl acetate (EVA) and acrylic resin in water. Due to the absence of organic solvent this adhesive is inflammable and not toxic. After compiling papers in a proper sequence, adhesive is spread on the spine or binder board (could either be of a thick paper sheet or cloth) that serves as a support for bookbinding It then permanently joints papers and the thick sheet carrying adhesive together. Adverse Effects on Environment Paper Paper that we use for almost everything is manufactured on the expense of trees. Trees absorb carbon dioxide through their pores existing in leaves and accumulate it in there soil, wood, bark and leaves. They turn carbon dioxide into oxygen that we breathe. It controls erosion and cleans underground water system. It stabilizes dust entrapping air polluting gases and cools the air turning water into vapors. Thus cutting trees are one of the major causes of global warming. Paper companies should spread the message of growing plants and tree in the environment. They should have public service messages on television, radio and behind all the printed books. Tress cut for the process of pulp production should also be replaced with new ones. Paper production consumes a lot of water and energy. Ink should be washed off from the paper before decomposing it. Wasting papers should be discouraged everywhere. They should be recycled. Usage of recycled paper should be encouraged. Many tree free papers are also being used in different parts of the world. They are made from sugarcane fiber, cereal straw, banana stalk etc. Ink Chemicals used in making ink like petroleum hydrocarbon. They discharge volatile organic compounds (VOC) while drying that creates waste, air pollution and is a source of many health diseases. Pigment has perilous metals like cadmium, mercury, chromium. Minerals oil used to clean printing machine also releases VOC in air. In many countries news papers and pages from books are used to wrap food items. Ink is transferred into human bodies when they eat from that paper. Also at the time of paper recycling, ink does not wash off entirely. A sensible alternative of this dangerous ink would be switching to vegetable based ink made from soy or linseed oil. They have many advantages. They decrease the amount of VOC released in the atmosphere. It does not contain hazardous heavy metal. They contain non-toxic soybean oil used in cooking, dressing and beverage. They are easily recycled and emanate less amount of toxic residue. It also increases American agriculture economy by providing them with a market. Ink made by soy ink is more rick and bright and creates less waste on press (Proia, Jennifer, n. d. ). Adhesives Adhesive has its own inauspicious impact on environment. Ethylene vinyl acetate emulsion is known for explosive gas that pollutes air and water. At the time of production it may cause skin and eye irritation. Adhesives should be washed off before decomposing paper. Adhesive should have less amount of inflammable chlorinated hydrocarbon. Solvents should be put back in the production cycle without damaging the environment. Many companies use white emulsion which is pollution free, nonflammable, non-toxic and harmless. It has been certified from China Environmental Labeling Products and ISO 14001 International Management System for bein ‘Double Green’ environmental friendly product. Conclusion More or less every thing that we use has unpleasant effect on the environment. Consumption of these products and their consequences are inevitable. In such case it is highly imperative to use alternative techniques that diminish precarious results. They may include growing more trees and plants, recycling, using more recycled products, spreading information about products that are harmful to the environment and their less dodgy alternatives. Negligence to these important facts has already stared to destroy our nature. As individuals, one should make a habit to study about the products and its components that we use regularly in our lives and educate others about its side-effects too. References Essortment. How is paper made from trees? Accessed on April 2, 2009. http://www. essortment. com/all/paperhowismad_rrfn. htm Proia, Jennifer. Going green with your marketing materials. Accessed on April 3, 2009. http://www. graphic-design. com/DTG/Business/greenprint. html Sengenuity. Printing ink technology and manufacture. Accessed on April 2, 2009. http://www. sengenuity. com/tech_ref/Process%20Control%20for%20Printing%20Ink%20Applications. pdf

The Educated Imagination Chapter 5 Essay - 850 Words

The Spectrums Purpose The fifth chapter of The Educated Imagination, â€Å"The Verticals of Adam† by Northrop Frye, explains his feelings about the necessity for children to be exposed to some fundamental texts in the literary spectrum in a certain order to best enable them to understand twentieth century society. The understanding of the Christian Bible, and Greek/Roman mythology are said by Frye to be key factors in how a child will interpret future literature. It is noted by Frye that the bible should be taught first, followed by the mythologies of the Greeks/Romans. I agree with his ideas about the order of exposure, as being the foundation of western society as it is best suited to being the foundation for learning of a child from said†¦show more content†¦Knowledge of the major stories present in the bible will continue to benefit any student for the foreseeable future, as the Christian mythology will remain a powerful force in our culture for years to come. For instance, the story of Cain and Abel contains a strong moral lesson about jealousy and family. Understanding a biblical story like this is the reason why the Bible should be taught first in the spectrum, as much of it provides a solid moral lens through which much literature can be successfully interpreted. More clearly than the Bible, Greek/Roman mythology helps outline the life cycle that almost always applies to the traditional archetypal hero. With basic knowledge of the Bible we can determine right from wrong and its influence in real life when reading mythology. As the reader we experience this when seeing the actions the hero takes, as explained by Frye when he states, ... the central myth of the hero whose mysterious birth, triumph and marriage, death and betrayal and eventual rebirth... (Frye, 67), explaining the archetypical story outline of the tragic hero. 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