Mobile phone radiation can be realized examining The expert is too anxious when calling it unnecessary

Mobile phone radiation can be realized examining The expert is too anxious when calling it unnecessary
Mobile phone radiation can be realized examining The expert is too anxious when calling it unnecessary
French Ministry of Public Health published the communique last week, the trade company demanding to sell the electronic product announced radiating the level of the mobile phone sold in all sales outlets from next April. Say in the communique, the trade company must announce mobile phone radiation in the sales outlet than the absorption rate. In addition, French Ministry of Public Health still requires that must indicate radiating competence of the products with all mobile phone advertisements. Besides mobile phone, other radio electronic products should be in accordance with this regulation while selling too. At one time, mobile phone radiation becomes the topic that people discuss warmly again. As to the thing that whether mobile phone radiation influences this question of the health, the dispute exists all the time in scientific circles, but French government hold " would rather the intersection of letter and their have, incredible it does not have " in respect this Attitude. French Ministry of Public Health has said, though there is no danger that scientific basis proves mobile phone radiation at present, but this can not plant possibility quilt " Totally get rid of " ,Still the tower eat Arnold and even suggest forbidding children to use the mobile phone to responsible for the state affairs secretaries of the ecological environment affairs. --Current situation of the market - -The standard is relative loosely the regular mobile phones can all reach the mobile phone to pass and launch the radiowave, through receiving changing trains of ground base station, thus realize pronunciation and data communication. Such electromagnetic wave called energy of radio frequency is absorbed by the human body more or less in transmission, thus cause the injury to the organ tissue. International scientific circles uses " SAR " Value standard to the intersection of mobile phone and radiation, determine mobile phone the intersection of radiation and impact on human body accord with the standard t promptly. This number value has stipulated the mobile phone to the supreme value of one kilogram of radiation quantity allowed to absorb of human per unit. Electric electronic engineering SCTE (IEEE) of U.S.A. of person who makes standard of two great mobile phones of radiation of the world Do not the ionization radiation protect the committee (ICNIRP) with world Also carried on the unity to the radiation standard. Unite States Standard of the radiation SAR value before being dispatched from the factory of the mobile phone is 1.6 watt / kilogram, European standard is 2.0 watt / kilogram. On August 1, 2008, our country releases" the electromagnetic radiation part of the cellular telephone exposes limit " National standard, stipulate and use close to the human head, can launch the public head of electromagnetic radiation of the cellular telephone of the electromagnetic wave and expose limit. The standard stipulates SAR value can't exceed 2.0 watt / kilogram, the same as European standard. In addition, the standard also stipulates that should annotate its electromagnetic radiation value in the cellular telephone catalogue. According to one of the main draftsmans of this standard, China National Measuring Science Research Inst the living beings, energy and Teng JunHeng, chief of Environmental Research Institute, introduce, the requirement for 2.0W/kg is actually looser, the mobile phone that domestic regular enterprises produce can all reach. But mobile phone manufacturer, to showing SA value seem extremely sensitive clearly. In the discussion of the standard, they do one's utmost to object to requiring that indicate SAR value on the products external packing. In addition, world has not the ionization radiation protected the committee to stipulate electromagnetic radiation to the thermal effect endangering value of the human body: The head can't exceed 38 ��, the truck can't exceed 39 ��, four limbs can't exceed 40 ��. But all these stimulate the source as to single radiation. --The newest progress - -It is tested that the new method OTA can reflect the news of telecommunication bureau of engineering letter department of radiation performance of complete machine of the mobile phone more directly, recently, our country begins to enter the network and measure new OTA test to TD portable terminal, it is received for being terminal and enters the test of network and judges the basis formally. This new test way lays particular emphasis on from the transmission power of the complete machine of the mobile phone and receives sensitivity respect to investigate radiating performance of the mobile phone, can reflect radiating performance of the complete machine of the mobile phone directly. On the present market, only pass FTA (FullTypeApproval) Authorize the mobile phone type tested and could go on the market and sell. This test has not stipulated radiation launching and receptivity of the complete machine of the mobile phone clearly, OTA tests that mainly tests terminal radiation performance through the aerial interface way, just remedy FTA and test the deficiency tested in this respect. At present, the trade mainly has two ways in the investigation of the mobile phone radiation performance, one kind judges from the radiation performance of the aerial, it is a comparatively traditional method of testing of aerial at present, called passive test; Another kind tests radiating the power and receiving the sensitivity of the mobile phone in the particular microwave darkroom, called active test. OTA belongs to the latter. It raises users and uses experiencing in the network to carry on the most direct advantage that OTA tests, but put forward higher technical requirement to the radio frequency transmitter / receiver manufacturer at the same time. When the mobile phone converses, because the human brain gets near the mobile phone aerial, will reduce transmission and receptivity of the mobile phone, transmission and receptivity of complete machine radiation of the mobile phone will all be reduced. If while the mobile phone researches and develops, can be quantitative to measure impact on transmission and receptivity of the mobile phone of the human brain, thus carry on optimization design, make, launch with receptivity reducing unable and too loud, namely reduce the electromagnetism of human body and aerial and couple the effect. Through knowledge of mobile phone radiation performance, production firm too can solve pronunciation better conversation quality poor and signal fine easy to fall line in many aspects problem. Because of the function test in the present radio frequency of mobile phone, the radiation of the complete machine has reflected final transmission and receptivity of the mobile phone, OTA becomes the test project that the mobile phone manufacturer pays attention to and approves too. Especially in recent years with the development of communication,OTA measurement method because their ocular and accuracy to measure result, favor by more and more operators and organization, rise to the mandatory rank these test one after another. --Future trend - -Measure software, make, become, perhaps to ordinary user, take mobile phone to measuring station, find obviously not realistic examining. Therefore, the picture of popular test mobile phone radiation has become supplementary means that some net friends measured on the network at present. The picture one vilain, download, get mobile phone begin, test, run speed indicate radiation to be loud soon. In fact, there is not relation between this picture and mobile phone radiation. It is involved in resolution ratio of the mobile phone screen in fact, the higher the resolution ratio is, the faster the vilain runs, this is involved in characteristic of GIF form picture. At present, some companies have set about developing the radiation protection earphone, radiation protection examining the software already, make users become possible examining mobile phone radiation value. According to Reuter's Israeli news, Israeli start-up company Tawkon has developed the first and can be downloaded to that on the mobile phone, software used for measuring mobile phone radiation, aim at helping users to reduce the radiation received on the premise of needn't give up the mobile phone ing. At present, all detection means based on the intersection of mobile phone and external test still. The application program of Tawkon can already be applied to the black strawberry mobile phone of RIM Company, can offer to using valley song Android systematic mobile phone and Nokia later this year The users of Symbian systematic mobile phone. This application program will monitor the cellphone subscriber, if the radiation level reaches " red security area " Critical value,last alarm,at the same time can provide by some reduction the suggestions of the radiations. The persons in charge of this company introduce: "You can do some simple thing, turn vertical into position of mobile phone from competence. " The aerial of a lot of mobile phones is often covered by users' hands, cause the mobile phone to release more radiation on the bottom. Insert the earphone or will reduce radiation to open the loudspeaker. In addition, Tawkon also chains to the global positioning system GPS, this software will tell users where to move and reach a " green district " ,Reduce the radiation that is received by this. --Expert's suggestion - -Needn't worry about the radiation injury excessively at present, still have objection in some mechanism on the biological effect of electromechanical magnetism of academia rival, some scientists say that have no clear evidence to prove that there will be danger to phone with mobile telephone. World Health Organization subordinate international the intersection of cancer and research institution announce before this, one last 10 year, aim at, find out, use mobile phone can strengthen the intersection of cerebroma and ill research of rate, count out because of contradiction of fruiting, the reason is that the research approach and research object exist and offset. The conclusion that the scientist provides is, we neither dare to say the mobile phone is with mattering between cerebroma, also unable to confirm that kind of possible direct radio relation. In life, what we saw for example the mobile phone interference fix the telephone, interfere with computer screen's, mobile phone ornament glimmering etc., thought the radiation of the mobile phone was very strong, in fact, this was only that an electron interfered with the phenomenon. What the GSM cell-phone is transmitted is pulse signal, the pulse signal is apt to interfere with the electronic circuit, after the electronic circuit receives the interference, will send out the noise, not because the radiation power was caused big. But a lot of experts think, the hand machine should realize the communication function must receive and send the strong radiowave, in the course of using the mobile phone, the strongest aerial portion of the signal is closest to brain exactly, so is sure to have negative influence on human brain. The findings of Sweden and a plurality of European countries of 2009, use the mobile phone for more than 10 years, may increase the danger of suffering from brain cancer and oral cavity cancer. Holland latest research reveal the intersection of mobile phone and radiation have close relation with insomnia, senile dementia, the intersection of children and behavior problem, male sterility,etc. still too. The first affiliated hospital nerve head of the department of surgery Li AnMin of PLA general hospital introduces, it is unquestionable that the mobile phone has danger on human body, but we should not be too anxious either. The human body has active immune systems, are bearing immune adjustment, immunity controlling, immunity wounding and such functions as the immunity is repaired. Both ionization radiation and damage that is not horizontal structure of cell molecule that the ionization radiation causes, will all carry on accurate recognition and repair accurately through the sound immune system, keep the fullness of human cell and internal organs function. But because decline, ultra and heavy dose of ionization radiation or long-term low dosage of the immune system is radiated, these have exceeded control of the human immune system, repair ability, irreversible distortion happened at last in human cells, the unordered hyperplasia of cell of distortion, malignant tumour may be turned into. Close electromagnetic radiation large from radioactive source, accept radiation to be long to endanger loud. So often with the human body " A distance " The mobile phone contacted is endangered biggest. He propose while using the mobile phone, had better use earphone, mobile phone from the intersection of head and more than 30 centimetres, in order to reduce the injury to the brain of electromagnetic radiation. The electric consumption of the battery of mobile phone is weaker, the signal is more weakly and just putting through in instant, the radiation that is produced is slightly high. Under these situations, should try hard to avoid phoning with mobile telephone, or avoid getting the mobile phone near the body. At ordinary times, had better put the mobile phone in the bag or from the place beyond one meter of human body. Hanging the mobile phone on the front, placing on the habit of the jacket pocket or trouser pocket had better be given up at once. -Various countries of external experience develop the precautionary measures at present one after another, the scientific research institutions of countries such as Japan, Israel,etc. are exploring actively that reduces the new action of mobile phone radiation, the scientific and technical personnel of Israel developed the new installation that could forbid using the mobile phone in some important public places not long ago, in order to avoid causing by use of the mobile phone and endangering publically in places such as the hospital, plane,etc.. The Japanese scientist utilizes the shell of the shellfish in ocean to be processed too, developing can daub the coating covered outside the mobile phone, in order to reduce or reduce the electromagnetic radiation of the mobile phone. The administrative departments of some countries have established the specialized agency to study the mobile phone to the influence degree of human health, in order to take the corresponding measure. Believe with the development of modern science and technology, people are sure to find safe and convenient new method and new technology of reducing electromagnetic radiation of the mobile phone, thus make the mobile phone serve modern and human life and communication better. (reporter Jiang ChenYi)


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