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Electromagnetic radiation hazard
Electromagnetic radiation hazard
Summarize
Long-term exposure to radiation with high power density (high power density is generally greater than 10 mW/cm2) has obvious thermal effects, which can cause body damage and even death. Receiving high power density radiation for a short time can cause eye damage and prone to cataract. Long-term low power density (low power density less than 1mW/cm2) radiation, the animal's nervous system, hematopoietic system and cellular immune power will be damaged.
Product Advantages
In addition, in the dense environment of various systems, RF burns caused by electromagnetic radiation are another hazard to personnel, and the high-frequency energy emitted near the RF burns is the result of natural coupling into the metal components of the superstructure. Such as metal structural pillars, pillars, ship railings, lifting hooks, tie rods, rigging, pipes and cables and other high-frequency, the current component is large enough, when the inductive reactance of inductance and capacitive reactance equal resonance, so the maximum voltage is generated, the human body due to chance and RF excitation of the metal body collision, then emit sparks or burns.
Application Scenario
The field strength test limit of electromagnetic radiation harm to human body shall meet the requirements of GJB5313A-2017 "Electromagnetic Radiation exposure limit and Measurement Method". For continuous waves, electric field sensors and field intensity testers or antennas and measuring receivers, spectrum analyzers or peak power meters can be used; For pulse wave, the peak field intensity is measured by antenna and measuring receiver, spectrum analyzer or peak power meter. The peak power of the measuring pulse signal is generally large, and an attenuator should be added when measuring with the measuring receiver to avoid damage to the instrument.
The test arrangement of CW electromagnetic radiation harm to human body is shown in Figure 1.
The test arrangement of the harm of pulse wave electromagnetic radiation to human body is shown in Figure 2.
Main technical parameters
System configuration：
|
order number |
name |
model |
Specification description |
vender |
quantity |
|
1 |
EMI receiver |
/ |
Meet the customer-specified test requirements |
Keysight |
1 |
|
2 |
Receive antenna group |
/ |
Meet the customer-specified test requirements |
Rflight |
1 |
|
3 |
Electric field probe |
/ |
Meet the customer-specified test requirements |
Rflight |
1 |
|
4 |
Field strength measurement software for electromagnetic radiation to harm to human body |
/ |
Meet the customer-specified test requirements |
Rflight |
1 |
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Record number: Su Gongwang Security 32011502021381