Central Locking System Essay Example for Free

Central Locking System Essay Power door locks (also known as electric door locks or central locking) allow the driver or front passenger to simultaneously lock or unlock all the doors of an automobile or truck, by pressing a button or flipping a switch. Power door locks were introduced on the luxury Scripps-Booth in 1914, but were not common on luxury cars until Packard reintroduced them in 1956. Nearly every car model today offers this feature as at least optional equipment. Early systems locked and unlocked only the car doors. Many cars today also feature systems which can unlock such things as the luggage compartment or fuel filler cap door. It is also common on modern cars for the locks to activate automatically when the car is put into gear or reaches a certain speed. Remote and handsfree In 1980, Ford Motor Company introduced an external keypad-type keyless entry system, wherein the driver entered a numeric combination —either pre-programmed at the factory or one programmed by the owner— to unlock the car without the key. Early- to mid-1980s Nissan Maximas could also be installed with a keypad, which would also retract the windows and moonroof once the car was successfully unlocked by pushing a specific button on the keypad. During the 1990s the Subaru Legacy could also be opened by pulling the drivers external door handle a specific number of times to enter a passcode number that would unlock the drivers door only. Today, many cars with power door locks also have a radio frequency remote keyless system, which allows a person to press a button on a remote control key fob, the first being available on the French made Renault Fuego in 1982. [1] Currently, many luxury makers also allow the windows to be opened or closed by pressing and holding a button on the remote control key fob, or by inserting the ignition key and holding it in the lock or unlock osition in the external drivers door lock. The remote locking system confirms successful locking and unlocking through either a light or a horn signal, and usually offers an option to switch easily between these two variants. Both provide almost the same functionality, though light signals are more discreet while horn signals might create a nuisance in residential neighborhoods and other busy parking areas (e. g. short-term parking lots). Some manufacturers offer the ability to adjust the horn signal volume. Other cars have a proximity system that is triggered if a keylike transducer (Advanced Key or handsfree) is within a certain distance of the car. How Stuff Works Between the keypads, keyless entry systems and conventional locks, some cars today have four or five different ways to unlock the doors. How do cars keep track of all those different methods, and what exactly happens when the doors unlock? The mechanism that unlocks your car doors is actually quite interesting. It has to be very reliable because it is going to unlock your doors tens of thousands of times over the life of your car. In this edition of HowStuffWorks, well learn just whats inside your door that makes it unlock. Well take apart the actuator that does the work, and then well learn how the lock can be forced open. But first, lets see how the car keeps all its signals straight. Locking and Unlocking Here are some of the ways that you can unlock cardoors: †¢ With a key †¢ By pressing the unlock button inside the car †¢ By using the combination lock on the outside of the door †¢ By pulling up the knob on the inside of the door †¢ With a keyless-entry remote control †¢ By a signal from a control center In some cars that have power door locks, the lock/unlock switch actually sends power to the actuators that unlock the door. But in more complicated systems that have several ways to lock and unlock the doors, the body controller decides when to do the unlocking. The body controller is a computer in your car. It takes care of a lot of the little things that make your car friendlier for instance, it makes sure the interior lights stay on until you start the car, and it beeps at you if you leave your headlights on or leave the keys in the ignition. In the case of power door locks, the body controller monitors all of the possible sources of an unlock or lock signal. It monitors a door-mounted touchpad and unlocks the doors when the correct code is entered. It monitors a radio frequency and unlocks the doors when it receives the correct digital code from the radio transmitter in your key fob, and also monitors the switches inside the car. When it receives a signal from any of these sources, it provides power to the actuator that unlocks or locks the doors. Now, lets take a look inside an actual car door and see how everything is hooked up. Inside a Car Door In this car, the power-door-lock actuator is positioned below the latch. A rod connects the actuator to the latch, and another rod connects the latch to the knob that sticks up out of the top of the door. When the actuator moves the latch up, it connects the outside door handle to the opening mechanism. When the latch is down, the outside door handle is disconnected from the mechanism so that it cannot be opened. To unlock the door, the body controller supplies power to the door-lock actuator for a timed interval. Lets take a look inside the actuator. Inside the Actuator The power-door-lock actuator is a pretty straightforward device. [pic] Inside the power-door-lock actuator This system is quite simple. A smallelectric motor turns a series of spur gears that serve as a gear reduction. The last gear drives a rack-and-pinion gearset that is connected to the actuator rod. The rack converts therotational motion of the motor into the linear motion needed to move the lock. One interesting thing about this mechanism is that while the motor can turn the gears and move the latch, if you move the latch it will not turn the motor. This is accomplished by a neatcentrifugal clutch that is connected to the gear and engaged by the motor. [pic] Centrifugal clutch on the drive gear When the motor spins the gear, the clutch swings out and locks the small metal gear to the larger plastic gear, allowing the motor to drive the door latch. If you move the door latch yourself, all of the gears will turn except for the plastic gear with the clutch on it. Forcing the Lock If you have ever locked yourself out of your car and called the police or AAA to help you get back in, you know that the tool used is a thin metal strip with a flat hook on it. From this article you can now see how this strip works. A simple vertical motion from either the knob on the door or the power-lock actuator is all thats needed to turn the lock and open the door. What the officer is doing with the metal strip is fishing around until he or she hooks onto the point that the knob and actuator connect to. A quick pull on this point and the door is unlocked! For more information on power door locks and related topics, see the links on the next page.

Hockey is the Greatest Sport :: essays research papers

Hockey and its modern roots date back to the late nineteenth century. Interestingly, one of the considered fathers of hockey, Lord Stanley, came to Canada and showed great interest in the amazing sport. He then donated a steel mug of his to the sport which was to become The Stanley Cup. It is the oldest trophy in all of sports. Hockey is the sport of all sports and there is not a quality of another sport one will not find in hockey. If so, it would be a more boring version of something similar that hockey already has to offer. For example, in Golf there is the putt and in Hockey there is the slap shot. The Canadian interest in Hockey as well as the entertainment it gives to people makes it the worthiest of all sports. Canada has always had an interest in Hockey. Even before it was widely known, Canadians knew they were missing something. Canada is a northern country which has a lot of ice which made it an ideal place for the sport. Over the years Canada has been recognized throughout the world as having the greatest hockey players. This really helps Canadians with the liking of the sport as Canada does not get very much attention in the world. Let us all face it, what other sport is Canada considered the best at? Hockey is a very quick game. Probably the fastest game out there. The speed really helps with entertainment. Watching the players go back and forth, scoring chances everywhere. The watchers blood pumping quick and hardly any stoppages in the game. It is they only sport that actually allows fighting to occur. This entertains and gives pride to the fans when their teams player wins. As said before, any quality of other sports can be found in Hockey, In this case it was Boxing.

Comparing and contrasting three poems that portray the yearning to belong Essay

We all long to be a part of something and to feel accepted, irrespective of age, culture and society. Similarly, Stephen Spender’s poem, â€Å"My Parents kept Me from Children who were Rough†, Moniza Alvi’s â€Å"An Unknown Girl† and Phyllis McCormack’s â€Å"Crabbit Old Woman† talk about how each of the poets long to be a part of a certain society or culture, and this longing outlines the underlying theme across all three poems. My Parents kept Me from Children who were Rough is about childhood bullying and regret. The narrator experiences bullying at a young age and I sense a feeling of regret as the poet wished he could be a part of the group of rough boys. I get the impression that the narrator, now at his adult stage, feels that he did not make the most of his childhood, and this was perhaps due to class differentials. Whereas, Moniza Alvi’s poem reveals how the narrator had left her hometown at a young stage and when she returns, she yearns to be a part of it. I believe she finds it difficult to reconcile her roots with her foreign lifestyle and falls under the dilemma where she is forced to choose one life, despite her strong desire for both. We get a contrasting idea in Crabbit Old Woman, as it is a plea to break free from the stereotypical image of old people. The old woman feels that she is being judged unfairly because her body has crumbled. She expresses how her soul remains intact, and would like the nurses to realize that her â€Å"battered heart swells† with undiscovered vivacity. All the three poems have an underlying theme of belonging. My parents†¦ is about how the narrator â€Å"longed† to fit in with the group of bullies. The world being so brutal, made growing up hard for the narrator. At a young age, the narrator probably needed to feel wanted and important and hence, wanted to be part of a group. There are many other significant themes present, such as a theme of childhood bullying, as the narrator fears the boys who had â€Å"muscles like irons†. A theme of regret, coupled with loneliness is distinguished, as the poet â€Å"longed to forgive† the bullies, but never had the chance. The constant use of â€Å"I† and â€Å"Me† tells the readers how the poet was lonesome. Therefore, I get the impression that the poem is written based on a bitter childhood memory. I feel sorry for the poet as he was made fun of for his â€Å"lisp† and the bullies’ â€Å"salt-coarse pointing†, which seems to have a ffected the poet’s life greatly, even throughout his adult phase. Similarly, in An unknown girl, the poet wants to belong to her native community, which she once left behind. There is a theme of admiration, as her fascination for the â€Å"evening bazaar studded with neon† is clearly depicted. In addition to that, a theme of self-identity is found, as the poet is desperately trying to find herself through her roots. She is â€Å"unknown† to herself. Whereas, the narrator in Crabbit Old Woman wants to belong in a world and society untouched by the evils of stereotype. She would like to feel accepted and gain the same respect as everybody else. She hopes the â€Å"nurses† would include her in their world, and would look beyond her physical inabilities, in order to admire and recognise the beautiful life she has lived and experienced. Alongside that central theme, a great deal of regret is conveyed, as the narrator immensely resents the way she is stereotyped, and hopes to prove that she is still young at heart. There is also a nostalgic sensation in the poem, as the narrator indulges in reminisces about her past experiences and life stages. I believe that the titles of each poem represent the reason for the narrators’ inability to belong. â€Å"My Parents kept Me from Children who were Rough† suggests how the poet blames his parents for not being able to bask in the pleasures the bullies experienced, as they were very protective of him. I get the impression that he envied the other children’s freedom, in contrast to his restricted life enforced upon him. On the other hand, the title â€Å"An Unknown Girl† has a double meaning as it could refer to the actual girl hennaing the poet’s hand or it may refer to the poet itself. The poet finds this culture overwhelming yet admires it, and she strongly craves to be a part of it. Moreover, the title â€Å"Crabbit Old Woman† itself illustrates the way the old woman is perceived by the nurses. This stereotypical image is what prevents the nurses from exploring the real â€Å"old woman† and prevents her from belonging into their worl d. Structure aids a reader to visualise a poem and the free verse structure in An Unknown Girl expresses the narrator’s exploration of thought and conveys her dream-like admiration. The lack of pauses in the poem is successful, as these would break the connection between the narrator and the bazaar. I felt the layout of the poem was particularly striking, and this furthermore made me realize that it could symbolize the pretty henna, which is described as â€Å"icing† to us, enhancing its graceful manner. Similarly, the use of enjambment in Crabbit Old Woman depicts to the reader the constant running of thoughts and memories of the various stages of life of the old woman. This creates a fast pace coupled with a constant rhyme and free flowing rhythm, which contrasts with the impression the nurses have of old people being slow. I believe the poet chose to use a fast pace and rhyme, to further emphasis that point. Moreover, I feel the use of three structured stanzas with four lines each in My parents†¦ made me realize how the narrator was always forced to follow his parents’ rules and hence, control himself from many things. As a child, one is helpless in front of his or her parents’ decisions and therefore, I feel as if the author felt caged. I sometimes feel obligated to my parents’ decisions and this often aggravates me, hence I can understand the underlying tone of anger and blame placed upon the parents in this poem. The use of effective language by the poets helps suggest the ideas of the poems. The constant use of similes in My Parents†¦ show the child’s admiration and interest for the bullies; as â€Å"muscles like iron† suggests strength and power, which are qualities that generally excite young boys. â€Å"Torn Clothes† reveal class differentiation and this helped justify the reason why the parents did not want the narrator to be a part of the bullies. On the contrary, Moniza Alvi uses striking imagery in her poem, as she paints a wonderful metaphoric image in our minds depicting her state of longing to be a part of this culture. The way the narrator will â€Å"lean across a country [India] with my hands outstretched longing for the unknown girl in the neon bazaar† is a very powerful image. I can almost imagine an anxious woman holding out her arms, in hope to receive her roots; it gives me the idea that the narrator is practically begging for this connection with her hometown. â€Å"Colours leave the street float up in balloons† is another influential metaphoric image. This symbolizes how the poet is trying to reach out for something [her roots], but it is not within her grasp. Moreover, the constant repetition of â€Å"an unknown girl is hennaing my hand† gives me the impression that the poet needs to constantly remind herself that she connects with this place; showing her desperation to remain connected to her roots. I chose these poems as I felt I could relate to them very well. I can understand Alvi’s situation, as I myself am away from my country of origin and often I find myself indulging in a more foreign culture, yet many a times I get nostalgic about the place I come from, despite feeling detached and distant from it. In addition, I think I could share my thoughts and feelings very well with My parents†¦ as it is about a young adult, just like me. Fitting in and being part of a group of children is very vital and therefore, I solemnly sympathize with the narrator. Lastly, I think Crabbit Old Woman deals with a great problem of stereotypical images, which are present in all works of life. It was inspiring to see the old woman standing up against these stereotypical images created by society. The poem made me to realize that I need to offer more respect and admiration for the older generation. All the three poems are written in a unique style and each one conveys very deep issues, in accordance with the universal theme of belonging. All the poets were very much successful in conveying their ideas and they were able to create a lasting impact upon the readers.

The Problem Of Teen Pregnancy - 1829 Words

Some things in life are just thrown at you without any warning and you simply may not be ready to tackle the task at hand. Pregnancy is one of those many things that are thrown into your life that can be a major issue for many people, especially teen girls. Finding out that you re pregnant is big news whether you are happy about it or not. The decision of what you re going to do with the baby is what makes it so life changing. Many possibilities arise for one to think about; one could choose to parent that baby, abort it, or put it up for adoption. For most people it s an easy decision because they want to keep that baby and raise it as one of their own, but for some, it can be the most difficult decision of their life. Many of these people are young women who get pregnant without trying to be. For those young women who have this problem arise, they get stuck thinking about their future and they feel that pregnancy may ruin what they previously sought out for themselves. Because of t his many of them abandon the thought of ever keeping the baby and turn to having an abortion. What many may not know is that adoption is a better way to handle this controversy. Adoption should be chosen over abortion so that the young woman will not be harmed during or after the process, the baby can be given a second chance at life, and those who can t have children of their own can experience the life of parenthood. When consulting the mothers-to-be about the decision to abort theirShow MoreRelatedTeen Pregnancy Problems924 Words   |  4 Pagesbabies were born to a woman aged 15-19 years. Most of those teens who got pregnant don’t know how to raise the kid. Theyre not physically or mentally ready to raise a baby. There multiple problems with teen pregnancy it’s a health risk to the childs life. It can break the bond between the parents and end up with them separating. Also its cause the parents to be stressed out and not be able to continue on with their regular life. 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