What equipment is needed for near-field radiation electromagnetic interference diagnosis

Overview Electromagnetic pollution refers to natural and man-made interference of various electromagnetic waves and harmful electromagnetic radiation. Due to the development of radio, television, microwave technology, radio frequency equipment power has increased exponentially, the ground electromagnetic radiation has increased substantially, has reached the level of direct threat to human health. Interactive changes in electric and magnetic fields produce electromagnetic waves. Electromagnetic waves to the air emission or flood phenomenon, called electromagnetic radiation. Excessive electromagnetic radiation has caused electromagnetic pollution.　　The harm caused by electromagnetic pollution can not be underestimated. The former Soviet Union had a shocked the world of computer homicide, chess masters Nicu bit, Gudkov and a super computer against the game, at that time, Gudkov with a high degree of skill out of the gods won three games in a row, was ready to start into the fourth game of the battle, suddenly was the computer release of a strong current killed, died in full view of the public. After a series of investigations, it was confirmed that the culprit who killed Gudkov was the external electromagnetic wave, which interfered with the program already programmed in the computer, thus causing the supercomputer to make a mistake in its action and suddenly release a strong electric current, resulting in an appalling tragedy. The potential harm caused by electromagnetic pollution to the human body has attracted people's attention. In the modern family, electromagnetic waves in the benefits for people at the same time, but also with the role of "electronic smoke", directly or indirectly jeopardize human health. According to the U.S. authority of the Washington Technology Assessment Office report, household appliances and various wiring electromagnetic waves generated by human tissue cells are harmful. For example, women who use electric blankets to sleep for a long time can make their menstrual cycle change significantly; pregnant women who frequently use electric stoves can increase the incidence of pediatric cancer after birth. In the past 10 years, about electromagnetic wave damage to human body report after report. According to the U.S. University of Colorado researchers survey, electromagnetic pollution is more serious in the Denver area children died of leukemia is more than twice the other areas. Swedish scholars Tomenio in the study found that children living in areas with serious electromagnetic pollution, the number of people suffering from neurological tumors increased substantially. Edit the classification of electromagnetic pollution The interactive changes of electric and magnetic fields produce electromagnetic waves. The phenomenon of electromagnetic waves emitting or converging into the air is called electromagnetic radiation. Excessive electromagnetic radiation creates electromagnetic pollution. Electromagnetic pollution refers to the natural man-made interference of various electromagnetic waves and harmful electromagnetic radiation. Due to the development of radio, television and microwave technology, the power of radio frequency equipment has increased exponentially, and the electromagnetic radiation on the ground has increased substantially, and has reached the level of direct threat to human health.　　Electromagnetic pollution includes both natural and man-made sources.　　Electromagnetic pollution affecting the human living environment can be divided into two categories of natural electromagnetic pollution and man-made electromagnetic pollution. Natural electromagnetic pollution natural electromagnetic pollution is caused by certain natural phenomena. The most common is lightning, lightning may cause direct harm to electrical equipment, airplanes, buildings, etc., but also in a wide range of areas from a few thousand Hz to a few hundred MHz within a very wide frequency range of serious electromagnetic interference. Volcanic eruptions, earthquakes, and magnetic explosions caused by sunspot activity all produce electromagnetic interference. Natural electromagnetic pollution interferes extremely severely with shortwave communications. Man-made electromagnetic pollution Man-made electromagnetic pollution includes: ① pulse discharge. For example, cut off the high-current circuit to produce electromagnetic pollution spark discharge, its transient current is very large, will produce a very strong electromagnetic. It is the same as lightning in nature, only the area of influence is smaller. ② Industrial frequency alternating electromagnetic field. For example, in the vicinity of high-power motors, transformers, and transmission lines and other electromagnetic fields, it does not radiate outward in the form of electromagnetic waves, but in the near-field area will produce serious electromagnetic interference. ③ radio frequency electromagnetic radiation. For example, radio broadcasting, television, microwave communications and other kinds of radio frequency equipment radiation, frequency range is wide, the impact of the region is also larger, can jeopardize the near-field area of the staff. Radiofrequency electromagnetic radiation has become the main factor of electromagnetic pollution of the environment [1]. Editorial electromagnetic radiation pollution sources 1), high frequency induction heating equipment such as high frequency quenching, high frequency welding and high frequency melting equipment.　　(2), high-frequency medium heating equipment such as plastic thermal laminating machine, high-frequency drying and processing machine and medium heating coupling machine.　　(3), short-wave ultrashort wave physical therapy equipment.　　(4), radio broadcasting communications.　　(5), microwave heating and transmitting equipment [1]. Edit this section of the electromagnetic radiation easily exceeded the standards of the place (1) computer 0.6 - 1.5 meters away (2) living room in the television, stereo and other home appliances are more concentrated place (3) industry, science, medicine, electrical equipment and VDT around (4) broadcasting and television transmission towers around (5) a variety of microwave towers around (6) radar around (7) high-voltage transformer lines and equipment around. Edit this section of the hazards of electromagnetic pollution, the hazards are mainly the following aspects.　　1, electromagnetic radiation on explosive substances and devices hazardous high-level electromagnetic induction and radiation hazards can be caused by the source of explosive substances and electro-explosive weapons control failure, accidental explosion.　　2, electromagnetic radiation on volatile substances of the hazards of high-level electromagnetic induction and radiation can cause volatile liquid or gas accidental combustion.　　3, the formation of space radio noise from high-power microwave and radio frequency equipment leakage of radio waves, will radiate into space, the formation of space radio noise. Space wave noise can interfere with the normal work of various electronic equipment located within the scope of this region.　　4, electromagnetic radiation affects human health microwave health hazards on the human body, the smallest in the long wave. Its biological effects, mainly the body to the absorbed radiofrequency energy is converted to heat, the formation of damage caused by overheating [1].　　5, electromagnetic radiation is the main cause of cardiovascular disease, diabetes, cancer mutation.　　6, electromagnetic radiation on the human reproductive system, nervous system and immune system caused direct harm.　　7, Electromagnetic radiation is a predisposing factor for miscarriage, infertility, teratology and other pathologies.　　8, excessive electromagnetic radiation directly affects the brain tissue development, bone marrow development, vision loss; liver disease, hematopoietic function decline, severe punishment can lead to retinal detachment.　　9, electromagnetic radiation can make male sexual function decline, female endocrine disorders, menstrual disorders. Hazard analysis of one of the hazards It is very likely to be one of the causes of leukemia in children. Medical research has proved that long-term in the electromagnetic pollution high electromagnetic radiation environment, will make the blood, lymph fluid and cell protoplasm changes. Italian experts believe that more than 400 children in the country suffer from leukemia every year, the main reason is that the distance is too close to the high-voltage power lines, and thus subjected to serious electromagnetic pollution. Harmful two can induce cancer and accelerate the proliferation of cancer cells in the human body. Electromagnetic radiation pollution affects the circulatory system, immunity, reproduction and metabolic functions of the human body, and in serious cases can induce cancer and accelerate the proliferation of cancer cells in the human body. Swiss research data pointed out that there are high-voltage lines around the household residents, the probability of suffering from breast cancer is 7.4 times higher than ordinary people. Cancer Medical Foundation of Texas, the United States, for some patients who suffered electromagnetic radiation damage to do the sampling laboratory results show that in the high-voltage lines near the work of the workers, the growth rate of cancer cells than the general population to be 24 times faster. Hazard No. 3 affects the human reproductive system, mainly manifested in the lowering of sperm quality in men and the occurrence of spontaneous abortion and fetal malformation in pregnant women. Harmful fourth can lead to children's intellectual disability. According to the latest survey, China's annual birth of 20 million children, there are 350,000 for defective children, of which 250,000 for intellectual disability, some experts believe that electromagnetic radiation is also one of the factors affecting. The World Health Organization believes that computers, televisions, cell phones, electromagnetic radiation has an adverse effect on the fetus. Harmful five affect people's cardiovascular system, manifested as palpitations, insomnia, some women's menstrual disorders, bradycardia, decreased blood flow, sinus irregularities, leukocyte reduction, decreased immune function and so on. If patients with pacemakers are in a high electromagnetic radiation environment, it will affect the normal use of pacemakers. Hazard No. 6 Adverse effects on people's visual system. As the eyes belong to the human body to electromagnetic radiation computer harm sensitive organs, excessive electromagnetic radiation pollution will cause vision loss, cataracts and so on. High doses of electromagnetic radiation will also affect and destroy the body's original bioelectricity and bio-magnetic field, so that the original electromagnetic field in the body abnormal. It is worth noting that different people or the same person at different ages on the ability to withstand electromagnetic radiation is not the same, the elderly, children, pregnant women belong to the sensitive population of electromagnetic radiation. Edit this section of the protection of electromagnetic pollution 1, the elderly, children and pregnant women belong to the sensitive population of electromagnetic radiation, in the electromagnetic radiation environment activities, should be based on the radiation frequency or field strength characteristics, choose the appropriate protective clothing to protect. It is recommended that pregnant women during pregnancy, especially in early pregnancy, should be all-round protection, for the harm of electromagnetic radiation can not take a chance.　　2, usually pay attention to understand the knowledge of electromagnetic radiation, enhance the sense of prevention, understand the relevant national laws and regulations, to protect their own health and safety from being infringed upon Daily life encountered in the radio, television effect suddenly deteriorated, almost always caused by electromagnetic interference.　　3, do not place household appliances too centralized, so as not to expose themselves to the danger of excessive radiation. In particular, some easy to generate electromagnetic waves of household appliances, such as radio, television, computer, refrigerator, etc. should not be placed centrally. Reasonable use of electrical equipment, maintain a safe distance to reduce the radiation hazard.　　4, pay attention to the human body and public and household appliances distance, the use of a variety of electrical appliances, should maintain a certain safety distance, such as the distance between the television set and people should be 4 ~ 5m, and fluorescent tubes should be 2 ~ 3m, microwave ovens should be left after the opening of at least 1m, pregnant women and children should be kept away from microwave ovens as far as possible.　　5, a variety of household appliances, public equipment, cell phones, etc. should try to avoid prolonged operation, while trying to avoid a variety of public and household appliances enabled at the same time. Cell phone connected to the moment of the release of electromagnetic radiation is the largest, in the use of the head and cell phone antenna should try to make the distance farther, it is best to use the separation of the headset and microphone to answer the phone.　　6, dietary attention to more food rich in vitamin A, vitamin C and protein, strengthen the body's ability to resist electromagnetic radiation. Usually pay attention to understand the knowledge of electromagnetic radiation, enhance the sense of prevention, understand the relevant national laws and regulations, to protect their own health and safety from infringement.　　7, the installation of electromagnetic shielding device in the electromagnetic field transmission pathway, the installation of shielding devices, so that the harmful electromagnetic intensity is reduced to the permissible range. This device is a closed shell of metal material. When the alternating electromagnetic field to the metal shell, the amplitude attenuation. Electromagnetic shielding can be divided into two categories: active field shielding and passive field shielding.　　8, other comprehensive prevention and control countermeasures, such as reasonable layout of the entire work, so that the source of electromagnetic pollution away from residential areas; improve electrical equipment; in the near-field area using electromagnetic radiation-absorbing materials or devices; the implementation of remote control and telemetry, to improve the degree of automation and so on. Precautionary measures There are five kinds of people should pay special attention to electromagnetic radiation pollution: living and working in the high-voltage lines, substations, radio stations, television stations, radar stations, electromagnetic wave transmission towers near the personnel; often use computers, television electronic equipment, medical equipment, public automation equipment; living in the modern electrical automation environment of the staff; wearing a pacemaker patients; living in the above environment of pregnant women, children, the elderly and the sick. The elderly and the sick, etc. If the electromagnetic radiation pollution in the living environment is relatively high, the public must take appropriate protective measures. Do not place household appliances too centrally, so as not to expose themselves to the danger of overdose radiation. In particular, some household appliances that are prone to electromagnetic waves, such as radios, televisions, computers, refrigerators, etc. should not be centrally placed in the bedroom.　　All kinds of household appliances, public equipment, cell phones, etc. should try to avoid prolonged operation, while trying to avoid a variety of public and household appliances enabled at the same time. Cell phone connected to the moment of the release of electromagnetic radiation is the largest, in the use of the head and cell phone antenna should try to make the distance farther, the best use of separate headset and microphone to answer the phone.　　Pay attention to the human body and public and household appliances distance, the use of various electrical appliances, should maintain a certain safety distance, the farther away from the appliances, the smaller the infringement of electromagnetic waves. Such as color TV and human distance should be 4 to 5 meters, and fluorescent tubes distance should be 2 to 3 meters, microwave ovens should be left at least 1 meter away after opening, pregnant women and children should try to stay away from microwave ovens. Diet and health care in the family, to prevent electromagnetic pollution, in addition to the correct and moderate application of a variety of electrical appliances and electronic equipment, but also from the nutritional health care diet to start the prevention and treatment. Vegetables oilseed rape, bok choy, mustard greens, potherb mustard, cabbage, radish and other cruciferous vegetables have anti-pollution green tea damage function. Our scientists from these cruciferous plants have successfully extracted a natural pollution protection agent SP88, and through a series of experiments from the molecular level to the whole animal, plant, the role of SP88 mechanism and biological functions have been confirmed. Carrots, bean sprouts, tomatoes and other rich in vitamin A, vitamin C and protein, often eat these vegetables are conducive to anti-electromagnetic pollution. It is worth noting that a recent study by Dr. Luo Qiong of Wuhan University's School of Public **** Health found that kelp polysaccharide, an extract of kelp, has anti-pollution effects due to its ability to inhibit apoptosis of immune cells and restore cellular immunity, humoral immunity, and non-specific immune functions in immunosuppressed mice. Numerous experimental studies have shown that fungal foods such as enoki mushrooms, shiitake mushrooms, monkey head mushrooms, and black fungus can also play an anti-electromagnetic pollution role by enhancing the body's immunity. To summarize, in order to effectively prevent indoor electromagnetic pollution in modern homes, when ensuring adequate intake of vegetables, we should ensure that the intake of cruciferous vegetables, carrots, bean sprouts, tomatoes, kelp, and fungi vegetables, in order to enhance the body's ability to resist radiation. Fruits The vast majority of fruits have anti-pollution function, eating is beneficial and harmless. Why can fruit anti-pollution? Because the fruit is not only rich in vitamins, crude fiber and trace elements, more importantly, the fruit contains a lot of active ingredients, it is these active ingredients in the process of anti-electromagnetic pollution plays an important role, for example, orange fruits in the terpenes and berries in the tannins can activate the protein molecules in the cell, the electromagnetic pollution after the mutation of the cancer cells wrapped up, and the use of cell membranes of the inverse phagocytosis, the carcinogens out of the body. carcinogens out of the body, preventing the damage of carcinogens to the cell nucleus and ensuring the integrity of genes. Beverages Among many tea beverages, green tea has a very good anti-pollution effect. Green tea is a good anti-pollution drink because it contains the potent antioxidants catechol and vitamin C, which not only scavenges free radicals in the body, but also causes the paranephric cortex to secrete hormones that combat stress. Of course, the small amount of caffeine contained in green tea can also stimulate the central nervous system, boosting the spirit. Wolfberry tea is rich in beta-carotene, vitamin B1, vitamin C, calcium, iron, has a liver, kidney, the role of vision, chrysanthemum tea or honey chrysanthemum tea have eyesight, clear the liver liver and liver function, these three kinds of tea to fight against electromagnetic pollution, especially for the "computer people" prevention of radiation and relieve eye fatigue role is significant. Previous studies have also confirmed the protective effect of grape seed extract against pollution damage. Soviet cosmonauts took a plant-based drink rich in proanthocyanidins to prevent pollution damage during their space flights. People living in the Chernobyl nuclear power plant in the Soviet Union, where an explosion caused severe nuclear contamination and many local people suffered nuclear contamination damage, were advised to drink a red wine called Crimean. Therefore, modern urban families are advised to drink red wine regularly.