雅思作文科技类范文

2024-06-11 版权声明 我要投稿

雅思作文科技类范文(精选9篇)

雅思作文科技类范文 篇1

一、英国25年间能源原料状况,折线图。当然是新的干净能源上升,污染的下降啊

二、老人生活在养老院好还是在家好

■Version 2

作文一:三个

PIE CHARTS shows the changes in the consumption of energy from different energies in different time(1928,195?,1998).Energies was composed of OIL, NATURAL GAS, COAL, OTHER and in 1998 NUCLEAR ENERGY was introduced.作文二:

Scientific and technology advances was benefit in our daily life today.However, most of scientists no longer be able to find the solutions of the problems they have created.To what extent do you agree or disagree.Tell reasons.详细大作文题目:

1.new invention(computer phone etc)more and more change people live.2.will it bring some positve or negtive effect ?

3.answer your questions with your relevent example of your experenice

TASK2:作文是写科学创造了现代社会,可有人认为科学家在今后不再可能有什么科技创造了,你认为如何?

■Version 3

第一是英国四种能源的线状图.第二是写现在对老人来说,到老人院里比和家里那些忙着工作的下一代在一起要好,说说你的看法。就这些。

■Version: 4

the one who do not know how to use computer become more and more disadvantage.show the disadvantages and what action should government take?

现在不懂电脑会落后于时代,说说你的看法,有人认为政府有责任解决这个问题,你认为有哪些方法

■Version:5

Creative artists should be given weth freedom to express their ideas(words,pictures,musics and films.however some people think govenment should take some restriction weth them.to what extent do you agree or disagree this opionion.give your reasons with own knowledge and give examples.VERSION 481、五个国家的失业率表格

2、有的家庭不买电视为了孩子有时间去创造发明,disagree or agree ? ■Version 47

小作文是写4个国家在工业,农业和家用用水的状况是个BAR CHART。大作文是写机器人是给人们带来好处还是危险。今后intelligent machines象robots会越来越多的应用,它将能做许多人类能做的事。请讨论这种想法benefits和dagers。第一篇是关于四个国家在家庭用水,农业和工业的人均用水量,很好写,也没有什么困难看懂。第二篇是写机器人的好处和坏处,还可以吧,也不是很难.task 1 is 4 column chart!showing the amount of water use in 4 countries in 3 categories(agriculture,household,industy).in agi.australia leads 1st, in household,industy, america is no.1 the U.K, no wonder a country full of gentleman, always the last one, japan strives for the 3rd place!

task 2 is the wildly using of robots will bring our human beings danger,use ur own view tell sb ur thoughts on it: a blessing or a curse?

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Task 1,关于1970,1990,2010三个时代英国人在transpor(Cars & Pulic transport)和 communications(Postal services & Tele-communication)花销上的变化---柱状图.很直观,很容易组织结构.20分钟搞定200字.Task 2,是说现在有人用live animals进行research.有人觉得cruel and unnecessary;有人认为是可行的for the interests of human.Discuss the two views(注意,这很重要)题目很有代表性,如果比较爱看动物世界和探索类节目加上如果是半个动物保护主义者,肯定两方面都有话说.结构是典型的平衡型:开头,观点1,观点2,最后陈述自己的倾向.37分钟,400字.■Version 45

TASK1,讲一个在KINGSTOWN里1996年到2001年外国学生的人数变化,分两方面UNIVERSITY和SECONDARY SCHOOL。简

单。A bar chart shows the change in the number of international students in universities and secondary school from 1996 to 2001.TASK2,(大

意)It is said that today people’s live are becoming increasingly stressful.What’s the reason of it occur and how to solve the problem?

version 52

task 1 有两个图,一个曲线,一个饼状图,关于英国electricity在summer和winter的使用情况和用在一些电器上的比率。

task 2 的题目绝了。

happiness is considered important to peoplewhy are the definitions of happiness different?(大概是这样,意思就是问为什么幸福的定义如此不同和难下这个定

义)what is the factors in achieving happiness give some examples and relavent evidence.■Version 51

TASK 1是给你一个TABLE和一个CHART,分别说europe usa Canada的妇女受的高等教育的比例,其中欧洲中分丹麦瑞士等,第二个CHART说各个MAJOR 中女学生所占的比例,有

HUMANITIES LAW MEDICINE ENGIEERING AND COMPUTER SCIENCE SOCIAL SCIENCE AND SO ON

task2: Most countries spend a large amount of money in weapons to defend themselves though they are not at war.To the countries it should spend money to help the citizens for whom in the countries are poor and disadvantaged.To what extent do you agree or disagree this statement.■Version 50

task1是三个公司的税后赢利profits的曲线图curve chart.task2是调查表明世界城市在变大,有个单词要注意enomous,当时不知道这个单词意思,还好,蒙对了。要求你find the causes和可能的consequence...,上过深圳环球孙头课的同学可以看孙头课上发的讲义,即causes and solutions类型的文章,背背模板套句。

■Version 49

task1讲英国人口从大城市中迁出和主要原因第一个bar chart 是3D的,是population decrease rate in manchester, birmingham, livepool and somewhere :P 四个城市,百分比中间两个高40%上下吧,另外两个低,第二个是households认为城市中最严重的问题 第一是crime超过60%,第二是rubbish 40%多 还有noise, neighbour等一共5个

bar : waste disposal become increasing problem how do you think it is true and give some suggestion for goverment and individuals how to reduce the rubbish being producing.task2Waste disposal presents increasing problems, especially in urban areas.How true do you think? give some suggestion for the government and individuals how to reduce the amount of rubbish.Version 55

Task one: the pie charts below show the percentage of total music sale shared by different companies in the year 1990,1995 and 2000.Task two: recent statistics show that the crimes by the young people in the major city of the world are on the increase.Give your analysis of the reasons and the solutions.■Version 54

Task1)A bar chart shows the percentage of emploment of women in 3 sections in 4 diferrent countries.Task2)Modern technology has influenced people s entertaiment,makes people less creative.Agree&Disagree?

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第一部分:两个曲线图,有关1980年到1998年美国property crimes和violent crimes的数字变化

第二部分:

Many people believe that we have developed into a “throw-away society” which is filling with plastic bags and rubbish.TASK 1 You took your family had a good meal in a local restaurant.Write a letter to the newsper to tell about it, describ the meal you had, and why you think the restaurant is worth for other people to visit.TASK 2.Choose an invertion, telephone or computer, and tell how it has changed our life.Are the changes all possitive or negative?

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tesk1 一个table给出关于澳洲生活在贫困中的家庭类型的数目与百分比。一开始的时候下笔太快结果写到一半发现会错表格的意思,然后擦掉重写,浪费了很多时间,结果tesk2的conclntion不够时间写!痛苦啊~~~)

雅思写作范文 篇2

1、词(word)

学习英语(English learning)没有捷径(short cut)可走,从最简单的(simplest)单词开始,词汇量(vocabulary)越大越好,特别(especially)是在写作中(writing)要表达同样或相似意思(similar meaning)的时候,如果能够做到多变而不重复,那肯定会给阅卷者留下深刻的印象(impression)。在背和记的过程中,语感会自然而然地增强(increase),其潜移默化的效果(effect)在短期内效果并不明显(obvious),但坚持两三个月你就会感到,原来英语也不是那么爱和自己过不去。之后是多写作多练习(practice),把自己在课堂上的东西要先掌握,然后再尽量在平时的文章中使用出来,这样才是真正的属于自己的东西。

2、句(sentence)

据观察发现,在写作的句型(sentence structure)方面,一直以来都存在一个误区,就是很多考生认为句型越复杂越长越能体现自己的水平(level)。其实不然,抛开写又长又复杂的(complicated)句子容易出错不说,单是从语言的流畅性(fluency)和阅卷者思路的延续性

(extension)来看,这样的表达(expression)很可能不但不能给文章加分,反而会弄巧成拙,由于逻辑(logic)关系过多而被扣分。其实,句子的多样性取决于句子类型的丰富性,一篇文章能够熟练使用不同的(different)句型。换句话说,它考察的是考生能否像当地居民(residents)一样写出地道的句子。既考察考生简单句和复杂句的综合运用能力(ability),还考察考生对不同的句型的掌握情况(situation)。

除去以上两点之外,还需要注意的就是细节(detail)问题:

3、标点

要合理的(reasonable)利用标点符号,严格按照英文书写格式进行答卷。

大小写(capitalized)

句首单词字母(letter)大小写问题,虽然说起来很简单(simple),但也是很多学生容易忽视的(ignored)问题。在句号、叹号、问号后面的单词需要大些(capitalized),这谁都清楚,但也要注意冒号、破折号、括号后面,并不是一个独立的新句子(new sentence),所以首字母仍然要小写的。

分段(paragraph)

当你拿着一篇只有一段的很长的文章时,是不是会有很晕的(faint)感觉?或者说,当你看的文章分成很多的段落,而你的论证能力有限(limited),费了半天劲也写不出几个句子,会不会每段都给人以流水账的感觉呢?所以,对于写作,想用写作形式来掩盖内容的不足,又能给阅卷者留下好的印象(impression),那么请把Task1段落划分控制在3-5段,Task2控制在4-6段。这样既能让段落分配清晰(clear),又可避免论证过多太分散中心思想。

4、合理分配考试时间(time)

五大技巧提高雅思词汇量 篇3

提高雅思词汇量的五大技巧:异构法、对比法、拆字法、同构法、谐音法。

提高雅思词汇量技巧之异构法

异构是相对于同构而言的.异构词是指在拼写上只相差一两字母的两个或几个单词,若异构词里有一个是我们所熟悉的,就可以拿来记忆其他不熟悉的异构词.异构法最适合记忆中等长度的单词。

提高雅思词汇量技巧之对比法

对比法是把同是生词的同构词或异构词放在一起进行记忆的方法,在对生词有了初步的印象之后,通过对比和互相印证可以实现加强雅思词汇记忆的目的。

提高雅思词汇量技巧之拆字法

拆字法就是把一个雅思词汇拆成两个或两个以上的部分进行记忆的方法.被拆出来的部分可以是完整的有内在联系几个单词;也可以是具有联想功能的几个字母组合.拆字拆得巧可以做到“望文生义”。提高雅思词汇量技巧之同构法

每个雅思词汇都由一个或数个英文字母构造而成,由于字母在单词里排列顺序的变化,相同的几个字母便可以构造出不同的单词,这些单词互相称作同构词.如果同构词里有一个是我们非常熟悉的单词,那就可以拿来作为记忆其他同构单词的桥梁。

提高雅思词汇量技巧之谐音法

谐音法就是利用英语单词的发音的谐音进行记忆的方法.由于英语是拼音文字,看到一个单词可以很容易地猜到它的发音;听到一个雅思词汇的发音也可以很容易地想到它的拼写.所以,如果谐音法使用得当,是最有效的记忆方法,可以真正做到过目不忘。

雅思作文科技类范文 篇4

听力

Section 1

新旧情况:

场景:咨询——皮划艇课程

题型:10笔记

参考答案:

1-10)笔记完成题

1.swim 50 metres

2.rules to follow

3.a vest and a helmetprovided

4.shower afterwards

5.spare cloth

6.fee: adult 17 pounds

7.with assurance included

8.课程结束后的活动——sea

9.课程结束后的活动——take part in race

10.开课日期——Tuesday, 5th, June Section 2

新旧情况:

场景:介绍——植物中心介绍

题型:4多选+6配对

11-14)Multiple choices

11-12.without change

garden glove

rose bush trimming course

13-14 need more volunteer

café

office

15-20)Matching

15-20: 展台看点

15.local plants-easy to grow

16.desert plants

17.edible plants

18.lawn

19.soil nutrient

20.design colour

Section 3

新旧情况::待补充

场景:学术讨论——网络对心理学的影响

题型:6单选+4配对

参考答案:

21-26)multiple-choice question

21.Why interesting——many lectures from different departments

C.principles

22.introduction?

B.data, bar chart

23.negative impact according to personal experience:

B.less creative

24.other negative impact:

B.consult tutor

25.further information?

A.website

26.surprising finding?

A.kinder, understand others

27-30)matching

27.Bad noises-difficult to find information on the website

28.the Stracker test-lots of participants

29.personality plus-useful

30.Face up-recommended by professional

解析:多选题和配对题组合的一套题目,整体来说因为需要识别多选题中的干扰信息和识别配对题中的定位词识别,重点考查考生的同义替换识别能力。

参考练习:C11T3S3

Section 4

版本号:待补充

场景:学术讲座——鸟类研究

题型:10笔记

参考答案:

31.which is rare

32.estimate

33.method: mapping

34.especial rare: identify

35.pollution

36.survival rate

37.frequency of calling during the flight

38.method: recording the tracks to listening

39.monitor from distance

40.wind farm

阅读

Passage 1:

题目:Why good ideas fail

题型:判断题4+填空题6

新旧程度:新题

文章大意:主要讲一个公司之前销售产品成功,但后来不太好了,然后两个专家对这个公司的营销模式发表观点

参考文章:

暂无

参考答案:

判断题:

1.TRUE

2.NOT GIVEN

3.NOT GIVEN

4.FALSE

填空题:

5.暂无

6.name

7.container

8.behaviors

9.暂无

10.straight instinct

11.race

12.暂无

Passage 2:

题目: The Flood Control

题型:段落细节配对6+多选题 2+填空题5

新旧程度:新题

文章大意:主要讲了洪水以前和现在的情况对比,以及治理洪水的新方法

参考文章:

暂无

参考答案:

段落细节配对:

13.D

14.C

15.D

16.E

17.G

多选题:

18.A

19.C

填空题:

20.central Europe

21.Mississippi

22.Dutch

23.Berlin

24.暂无

25.暂无

Passage 3:

题目:Australia Megafauna

题型:判断题4+选词填空题4+单选题 7

新旧程度:新题

文章大意:对澳大利亚大型动物(megafauna)的研究,分析几千年前人是否和大型动物一起生活

参考文章:

暂无

参考答案:

判断题:

26.TRUE

27.TRUE

28.NOT GIVEN

29.FALSE

选词填空题:

30.F

31.D

32.H

33.C

单选题:

34.A

35.B

36.C

37.D

38.C

39.D

40.B

口语

一、考试概述:

以下为6月份本场考试话题,请考生们扎实准备。

1.Describe a popular comic actor/actress

2.Describe a city or country that you would like to live or work

3.Describe a magazine you enjoy reading

4.Describe some useful skills you learned in a math class you’re your primary/high school

5.Describe something interesting that your friend has done but you haven’ t done

二、具体题目分析:

Describe some useful skills you learned in a math class you’re your primary/high school(New)

You should say:

What the skill was

How you learned it

Who taught you

And why it was useful to you

I learned a pretty awesome skill from my math teacher in high school.He taught us how to create an artwork based on mathematical principles.Our math teacher is really one of a kind, I mean, normally you might be bored out of your mind in math grades, but in his class, he could always find a way to spice things up and make everything about math intriguing.It’s like making hand shadow puppets, but instead of using hands, we used small cubes.We carved three different shapes into the three faces that are next to each other, you know, the three faces that share one corner, and when you rotate this Cube, you would see the shadows of the three different shapes in turn on the wall.I still remember how thrilled we were when our teacher showed us how it worked.At fist, the small sculpture looks so abstract, I mean, we didn’t know what it was, but when the light was on, we saw a shadow in The shape of the letter ‘A’ on the wall, and then our teacher rotated the sculpture to a certain angle, and magically, the letter ‘D’ showed up on the wall.We were like ‘wow’, but there’s more, when Our teacher rotated the sculpture again, we saw the letter C.That was quite a jaw-dropping performance for a bunch of high school students, you know.写作

小作文: 柱状图 percentage of overweighting in males and females of Australia from 1980 to 2010

雅思作文科技类范文 篇5

考研英语作文范文:科技对学生学习的帮助

Do you agree or disagree with the following statement? With the help of technology, student nowadays can learn more information and learn it more quickly.Use specific reasons and examples to support your answer.Technology has greatly improved the way we get information.Students can now get more information, get it more quickly, and get it more conveniently.The Internet and the World Wide Web has opened every major library and database to students around the world.Information comes not only in print form, but also in multimedia.You can get audio and video data.You can get information about event in the past as well as events that unfold as you watch your computer monitor.Information comes at the speed of the Internet, which is to say in nanoseconds.You can type in a few key words in your search engine, and the engine will search the entire puter.Your computer is open 24 hours a day, unlike a library or office, which has limited hours and limited resources.You can do research in your pajamas while you eat breakfast.What could be more convenient?

Technology, especially the Internet, has certainly changed the quantity and quality of the information we get.The speed and convenience of a computer helps students learn more, more quickly.

雅思作文科技类范文 篇6

In the first place, we cannot afford to lose them, which are important in the flow of our culture through time. An old architecture helps people connect with the past and hence form their culture identity. For example, the old castles and churches in Britain tell local people what kind of lives their ancestors lived; the Forbidden City in Beijing, China, makes all Chinese people proud of their country. If the government fails to preserve those buildings, we will lose them forever. Even if we may rebuild them someday in the future, we cannot reproduce the history. As a result, our children can only learn history and culture through pictures.

In the second place, the historical and traditional buildings will promote development of local tourism and hence local economy. In modern society, travel has become an important part of people’s entertainment activities. The historical sites will attract numerous visitors, which not only ensures tickets revenue, but also means more business opportunities to local people. The coming visitors will take transportations, live in hotels, hire tour guides, buy souvenirs, and have dinner in restaurants. As a result, a series of job opportunities will be generated, so as to cater the needs of tourists. If the investment in the historical and traditional buildings achieves success, it will benefit people in the long term by a prosperous economy.

To sum up, it is highly necessary for governments to preserve old buildings which are important for the protection of history and economic development.

20171202雅思大作文题目:

People think that old buildings should be knocked down and give way to the new buildings. Do you agree or disagree? How important are old buildings to us?

大自然高于科技 篇7

如今,环境问题与科技发展的矛盾日益凸显,这促使人们反思人和自然的关系。但事实上,自从地球形成之初后十亿年,大自然已经形成,而人类的历史总不过几万年,在时间上与自然界相比只不过是沧海一粟,而在起源上来看,人类只是自然界的产物,是自然的儿女,更没有理由用科技去伤害自然。

在科技和社会发展的每个时期,人们大都认为他们所做的事是正确的,然而在后世看来,其中有许多事是不符合科学规律的,如同民国时期,决定拆除圆明园,完全毁灭孔教礼法,甚至在贫水的北京城种植水稻,在当时看来是为了中华民族进步,为了百姓生活,但实际上经历历史考验最后证明其大部分做法是错误的,不符合历史发展规律,完全破坏礼法使人们无根可寻,而在北京种水稻更是无稽之谈。而科技的发展是无止境的,现在以至将来都不可能实现科技的顶峰。人类的知识与其祖先相比诚然有了极大的进步,似乎有嘲笑古人的资本;可是,殊不知对于后人而言我们也是古人,一万年以后的人们也同样会嘲笑今天的我们,也许在他们看来,我们的科学观念完全错了,我们的航天器在他们眼中不过是个非常简单的儿童玩具。人类的认识史仿佛是纠错的历史,一代一代地纠正着前人的错误,于是当我们打开科学史的时候,就会发现科学史只是犯错误的历史。那么,我们有什么理由和资格嘲笑古人、在大自然面前卖弄小聪明呢?既然这样,我们必须从长远角度观察问题,用后人的视角审视今天所做的事。人们很难评判现在所的事的正确与否,只有历史才能检验。

科技不断发展,带给人们越来越强大的自信心,使人们可以放开胆子去做一些以前根本不敢做的事,因而会犯更多的错。像是圆明园此次的贴膜事件,为了节水和旅游,人们敢于提出贴膜这样异想天开的事,敢于对大自然动手动脚,而这在以前几乎是不可能的,若不是许多生态学家出面极力制止,恐怕这早已成真,倘若成真,那难以想象以此为生的清华园和燕园如何维持下去。

无论科技发展到什么地步,人们都应该保持对自然的敬畏之心,而不是用那种自以为是的小小的科学去撼动自然的根基。我认为科技的发展应该是用来服务于自然,让其更好地适合人类居住,倘若一味的为了个人的利益去破坏他的话,恐怕人类难以生存。我们的祖先对自然便总有一种敬畏之心,例如商朝人,敬天法祖,敬畏自然,祭祀祖先。我们国家的宗教原始就是自然崇拜开始的,尚武崇尚狰狞之美的商王朝,传说中的夏铸九鼎,大概是打开青铜时代第一页的标记,也是人们对自然崇拜与敬畏之心的体现;古人讲的祭祀,最开始也是对自然和野性的赞颂与信仰。而当今的人类却妄想把人与自然对立起来,宣称要征服自然。殊不知在大自然面前,人类永远只是一个天真幼稚的孩童,除非再经历无限时间,是人类历史和自然历史大致等同,否则人类永远不会具备和大自然抗争的实力。当初的北京政府为了旅游和节水提出了贴膜,这边是不顾自然的强大而冒险抗争自然的表现。我认为,人类做事应先考虑自然的问题,若有害于自然,则坚决不能做,否则,便会受到惩罚。那最近频发的地震海啸,那连年上涨的气温,那越来越大的臭氧层空洞,那因白色污染而死去动物的漫山遍野的尸骸,都是一次次的警钟,提醒人们人类的微小,人们的力量的薄弱。

圆明园始建于1709年,一直是历代皇帝游玩时的去处。1860年至今,先后经历了火烧、出卖、偷盗、腐败和环境破坏五劫,前四劫是人类内部的问题,是人们心里的弱点,都可以通过教化是人改正,可以修复重来,而那环境破坏却难以重新来过。也可以说使人们内心的欲望造成了人与自然环境的紧张。鸦片战争时,为了偷窃园中财宝,英法联军进入园中大肆破坏,为了能分一点残羹冷炙,附近的百姓见火不救反而趁火打劫,偷盗珍稀文物;民国时期为了破除旧文化,将圆明园又添上新的伤痕,建国后,多少人为了发财打着正当的旗号去搞破坏,那无极剧组甚至把园中树木都染

成黄色,使圆明园惨不忍睹。圆明是体圆光明的意思,在话剧中,圆明女神是大自然的化身,而在剧中,他流落四方,没人接纳,甚至被人侮辱抛弃。反观当今的自然,处境正是如此,人们忙于生计,为了自己过好,少有人会去在意与自己少有关系的自然,但事实上,自然时刻在准备报复我们,若不未雨绸缪终会使自己遭灾。

雅思考试:1216雅思大作文 篇8

Social networking sites have a huge impact on both individual and society, to what extent do you agree or disagree

范文:

Today, most people are closely connected through various kinds of social networks, such as Facebook and Twitter, as long as they have access to Internet. The large user base has entitled those social networks huge power to influence people and society both positively and negatively. While enjoying the benefits, we cannot overlook the potential threats and dangers.

Admittedly, social networks help us enlarge social circles and expand outlooks. For friends living in different places, social networks provide an ideal platform for them to keep in contact, share information and communicate ideas. By updating status and uploading pictures, friends get to know each other’s life; also by giving comments and likes, friends strengthen bonds. Another valuable function of social networks is for people to make friends with strangers. It is convenient for people to follow users with similar hobbies and opinions. In a word, social networks help people break geographic boundary.

However, it is also worth noticing the harmful impacts brought by social networks. What occurs to people’s mind first must be the leakage of privacy. While registering an account, people fill in personal information which may become the prey of hijackers. In addition, people and medias with large number of followers also take advantages of social networks’ strong power to lead public opinions. When their opinions are too radical, the public may be easily misled. Even worse, social networks have also become a major tool for terrorists to recruit members globally. By posting brainwashing slogans and pictures, they attract immature young people to join them.

To sum up, social networks are a double-edged-sword. It provides an easy solution for people to be connected, but poses potential threats to both individuals and society. It is necessary for people to be alert and vigilant while using them.

电力科技企业实习报告 篇9

时间:2010年7月14日-----9月16日

一,电力科技企业实习报告。概述

为期2个月的实习结束了,我在这两个月的实习中学到很多,都是学校和课堂所根本学不到的知识,受益非浅。Xx集团中国领先的电力能源计量和系统供应商,学到的不只是知识更是职业精神和文化。感谢Xx给我的这次机会。

二。学习过程,1.刚开始的一段时间,熟悉了一下公司的大概情况。知道一只表的所要走的过程,先要做样表,接着要到中试去接受各种检查,所有检测都合格后才能批量生产。样表是表计部的工程师们完成的,硬件工程师画好电路板,然后做好样表,软件工程师把所需程序烧到表中,拿到中试,去做各种测试,里面的测试有静电,群脉冲,浪涌,高压,还有模仿极限环境的雨淋,沙尘,辐射,高温,低温等……向EMC室大概了解了交流电测量设备的通用要试验和试验条件求。不同精度级别的表有不同的国家标准。生产车间都很自动化和流水线话,一般的芯片,电阻,电容都是贴片都由机器来完成焊接,了解一个电表产生的过程。

2.学习了焊接技术,了解并使用焊接等工具,还使用了锡枪,烘枪,等以前没用过的设备。能基本焊接一些简单的芯片。

3.学习了多功能电表通讯协议,简称645规约,07规约,实习报告《电力科技企业实习报告》。了解一帧数据的格式,了解如何解析分析数据帧。并用485线连接表和pC串口。根据协议上附录表,对电表进行读取和写入操作数据,进一步了解了规约。会使用485通讯软件读取表的信息。

4.开始接触最简单的电表。电路图不是很难,没有MCU控制,芯片只要一片计量芯片ATT7021,该芯片是整只表的核心,其CF引脚连接脉冲灯和脉冲输出用于校表,F1和F2的低频脉冲输出用于驱动步进电机。掌握这种没有MCU电表的工作原理。

5.学习真正意义上的智能电表。农网表就是用在农村的电表所以功能算是比较的少。其MCU是瑞萨R8C/2B系列的。通过编程了解了R8C的中断,定时,uart,知道怎么配置这些寄存器达到程序中想要的结果。表中MCU与LCD驱动,E2pROM通讯是通过I2C总线。通过期间不断的调试,已基本掌握I2C总线这类芯片的读写操作,能正确编写此类接口函数。

通过程序更是从底层深刻的理解了07规约,一帧数据的组成方式,和数据的返回形式。通过自己编写添加ID,掌握规约中基本ID解析函数的编写。通过自己写程序,调试,熟悉了瑞萨调试软件,仿真器和示波器的使用。

6.国网单相表的初步了解。国网单相表的功能可是比农网表复杂了很多。功能也更多,可以远程购电,pLC载波通信,IC卡购电。显示屏幕更大,内容不在是单纯的数字,而是能显示各种信息如尖峰平谷电量,剩余金额,时间等。芯片和农网相比,MCU换成了R8C/2B外围的功能和管脚更加丰富。编程配置方法农网表相似。增加了时钟芯片8025T,其通讯也是通过I2C,因为对I2C还算熟,很快就使MCU能读写时钟芯片。计量芯片换成了CS5464,使其不仅能测电量,电流和电压,能通过修改里面寄存器的值使其更精确。MCU与CS5464是通过SpI总线通讯,了解了SpI硬件接法,并通过对计量芯片的配置,熟悉SpI总线的时序,并能根据SpI总线协议编写SpI总线函数。通过对以上2个表的编程练习和端口操作。已基本能编写像农网表这类,功能简单的电能表程序的编写。

7.与工程师们的交流。听了有经验工程们讲解往往是收益匪浅,感受很多。期间听了2次外国芯片公司的报道,一个是MAXIM,一个是ROHM公司,都是全球有名的公司,能听他们的产品介绍,虽然因为语言和水平原因大部分都会听不懂,但让我开阔了视野,接触了当前最前沿的信息。

总结:

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