电热毯的电磁场强度和人体感应电流

Intensity of Electromagnetic Field and Electric Current on Human Bodies Induced by Electric Blanket

目的探讨不同载体、接地与否和开关状态等多种因素对电热毯电磁场场强的影响。方法对国内最常见的二极管半波整流调温型电热毯进行了电场、磁场和人体感应电流的测定。结果由于调温控制由开关中串接１只二极管的短路与否来实现，而当电热毯接通电源工作于低温档时，如二极管串接在电源的零线端，则电热毯的电场强度和人体感应电流比工作于高温档时还要大。

Objective To study the effects of various factors, such as different carriers, with or without ground connection to a blanket and status of its switch, on electromagnetic field induced. Methods To determine electric field, magnetic field and electric current on human bodies induced by electric blanket with a temperature -adjustable semiwave rectifier diode, which was domestically popular. Results Temperature was adjusted and controlled by a diode serially connected to its switch is put on and the blanket, with or without short circuit. When the switch is put on and the blanket is running in low temperature, if the diode is serially connected to the ground end of the power source, the intensities of electromagnetic field and current on the human bodies induced by the blanket was higher than those running in high temperature. Conclusion The most important factor influencing field intensities of the electric blanket is in its switch.