System and method for reducing electromagnetic interference of equipment based on pulse modulation circuit

A pulse modulation circuit, electromagnetic interference technology, applied in electrical components, magnetic/electric field shielding, active shielding, etc., can solve problems such as excessive instantaneous drive current, increase electromagnetic leakage, weaken radiation and conduction, etc., to solve internal interference Effect

Active Publication Date: 2019-10-11
CSSC SYST ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional method is to deal with wires and cables, signal cables and shield leakage to weaken radiation and conduction. However, the special equipment has not achieved the expected effect of eliminating internal electromagnetic interference. The...

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  • System and method for reducing electromagnetic interference of equipment based on pulse modulation circuit
  • System and method for reducing electromagnetic interference of equipment based on pulse modulation circuit

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments disclosed in the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0036] Such as figure 1 , in this embodiment, the system for reducing electromagnetic interference of equipment based on pulse modulation circuit includes: strong current equipment 101 , electromagnetic radiation monitoring equipment 102 , pulse modulation circuit 103 and linear motor 104 . in:

[0037] The strong electric device 101 is used to generate electromagnetic radiation.

[0038] In this embodiment, the strong current device includes but not limited to: a display unit and a main control unit. Linear motors are general (weak current) equipment.

[0039] The electromagnetic radiation monitoring device 102 is configured to monitor the electromagnetic radiation generated by the heavy current equipment to obtain a first electrom...

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Abstract

The invention discloses a system and a method for reducing electromagnetic interference of equipment based on a pulse modulation circuit. The system comprises strong current equipment, electromagneticradiation monitoring equipment, a pulse modulation circuit and a linear motor; the strong current equipment generates electromagnetic radiation; the electromagnetic radiation monitoring equipment isused for monitoring the electromagnetic radiation generated by the strong current equipment so as to obtain first electromagnetic radiation quantity; the first electromagnetic radiation quantity is compared with a radiation quantity threshold value; and the pulse modulation circuit is used for controlling the linear motor through the pulse modulation circuit when the first electromagnetic radiation quantity is equal to the radiation quantity threshold value. According to the system, the linear motor is driven by the driving mode of the pulse width modulation circuit, so that the problem of internal interference of strong current to weak current is solved.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic interference, and in particular relates to a system and method for reducing electromagnetic interference of equipment based on a pulse modulation circuit. Background technique [0002] Electromagnetic compatibility refers to the ability of a device or system to operate in accordance with the requirements in its electromagnetic environment without causing unbearable electromagnetic interference to any equipment in its environment. The electromagnetic compatibility of complex systems has always been a difficult problem to be solved in the engineering field. Electromagnetic interference is generally radiated through space and conducted through wires. When electromagnetic interference occurs when multiple electronic devices are mixed, it is more complicated to determine the source of interference. The traditional method It is to deal with the wire and cable, signal cable and the leakage of the...

Claims

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Application Information

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IPC IPC(8): H05K9/00
CPCH05K9/0071
Inventor 李腾飞费玮玮刘海旻杨洪康许亮
Owner CSSC SYST ENG RES INST
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