Is there any harm to the signal shielding device? Is it harmful to the human body?
Signal Masker IntroductionWhen the mobile phone works, the mobile phone and the base station are connected by radio waves in a certain frequency range, and the data and sound are transmitted at a certain baud rate and modulation mode. For this communication principle, the mobile phone signal shielding device scans from the low-end frequency of the forward channel to the high-end at a certain speed during the working process. The scanning speed can form garbled interference in the message received by the mobile phone, and the mobile phone cannot detect the normal data sent from the base station, so that the mobile phone cannot establish a connection with the base station. Mobile phones are characterized by search networks, no signals, no service systems.
The common mobile phone signal shielding device on the market has a frequency of 869~894MHz, 825~960MHz, 1805~1880MHz and 1900~1990MHz. The frequency bands are CDMA800, GSM900, DCS1800, and PCS1900. It can control the range of about 40 meters in diameter, using DC-DC converter input voltage, 5V output voltage.
1. Select the area where you want to cut off the signal from your phone and place the disconnector on the table or wall in this area.
2. After the installation is complete, turn on the power to the disconnector and turn on the power switch.
3. After the device is connected, press the power switch disconnector to work. At this time, all the mobile phones that are turned on in the field are in the search network state, and the base station signal is lost. The main callee cannot establish a call.
Is the signal shield harmful to the human body?The emergence of mobile phone signal shielding device has a certain inhibitory effect on the increasingly serious "mobile phone noise pollution". However, as a mobile communication interference device, the electromagnetic radiation generated will not cause harm to human health, but also become people. At the same time, in the process of installation and use of mobile phone shielding equipment, due to the large autonomy and randomness in the number of installations, transmission power, coverage, radiation control, etc., some places are demanding effective interference and Maximize the shielding effect, and even blindly introduce high-power mobile phones to interfere with the installation and use of shielding equipment. This has no impact on the human body.
As another product of human beings, the "cell phone signal shielding device" will definitely bring about certain negative effects while shielding mobile phone signals and ensuring information security. However, we should see the main contradiction when we look at the problem. Just as we don't use the kitchen knife because the kitchen knife will cut the hand, we will not reject the "cell phone signal breaker" because the "cell phone information masker" may have bad radiation to the human body. After all, the "mobile phone shield" guarantees information security and contributes to social stability is its main credit. It is most important to provide security for places with high safety factors such as prisons, detention centers, and major conferences.
As far as the quality of the mobile phone signal shielding system is concerned, judging from the current level of scientific understanding, there is no safety problem. The reason for this is mainly based on the following two reasons:
First, from a technical point of view, although the mobile phone signal shielding system is a new technology product, it should be said that the technology has been developed more mature, so it has a higher security. According to the test report of the authoritative testing organization, the qualified mobile phone signal shielding system has low radiation, and since it is usually installed at a high place, it has no adverse effect on human health.
Second, from a practical perspective, many authoritative organizations in China have begun to use mobile phone signal shielding systems. For example, in 2004, Chairman Mao’s Memorial Hall Authority installed the mobile phone signal shielding system produced by Shanghai Jike Electronics Co., Ltd. in order to maintain the solemn atmosphere of the memorial hall and meet its special confidentiality requirements. After actual use and testing, The Memorial Hall Authority believes that the products produced by the company meet the requirements of all aspects including safety and aesthetics. I think this should be a very convincing example. According to the information collected by the author, Shanghai Jike Electronics Co., Ltd., a leader in the mobile phone signal shielding system industry, produces products in the prison and public security departments of the judicial department. Both are used, and the feedback after use is also believed to be an immortal proof.
It is very interesting that the mobile phone signal shielding system "enemy" mobile phone has also caused security controversy at the beginning of the world, but with the gradual understanding of the mobile phone, people finally accepted the mobile phone, and In less than a decade, mobile phones have become an indispensable necessity in our lives, and even because of the popularity of mobile phones, a new generation has emerged: the generation of the thumb, the popularity of mobile phones can be seen. In the history of human cognition, according to the development of one aspect of contradictory things, one can predict another aspect. Such an example is not uncommon. I think the development of mobile phones as the "enemy" of mobile phone signal shielding systems may be Can provide a blueprint for us to predict the industry landscape of mobile signal shielding systems.
Finally, I want to tell a true story: In the 1990s, when China built the Daya Bay nuclear power plant in Guangzhou, because of the safety of nuclear power, the people of Hong Kong had been very resistant to this project. In order to dispel the doubts of the people of Hong Kong, the chief engineer of the project. Jokingly said: The safety of the kitchen knife is also problematic. The kitchen knife will inadvertently cut the finger and even be used as a weapon by the wicked, but this does not prevent us from using the kitchen knife. It does not prevent China from becoming a gourmet country, because we only try our best to do our best. Can prevent these things from happening. This very superb joke greatly eased the resistance of the Hong Kong people to the Daya Bay nuclear power plant and made a small contribution to the smooth start of the nuclear power project.
Undoubtedly, technology is a double-edged sword. We all know that mobile phone signal shielding devices have certain radiation. In the current situation where there is no authority to define how much radiation this radiation is harmful to people, what we should do is to use technology as much as possible from the perspective of people-oriented. Benefit, control and reduce the disadvantages of technology, to ensure the safety and health of people, to decide whether to use it in daily life, not for the uncivilized behavior of a very small number of people, but to ignore or even affect the interests of the majority .
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