Anti-interference structure of control component of auxiliary power device
A technology for auxiliary power devices and control components, applied in the direction of electrical components, magnetic field/electric field shielding, etc., can solve problems such as high-frequency signal interference, inability to correctly check and judge faults, loss of system control signals, etc., and achieve control of interference harmonic signals. , Improve the effect of electromagnetic shielding, improve the effect of electromagnetic reflection function
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Embodiment 1
[0034] like figure 1 , figure 2 As shown, the anti-jamming structure of the control part of the auxiliary power unit includes a case 1, and the control part 100 of the auxiliary power device and a filter 200 connected with the control part 100 are arranged in the case 1. A metal isolation box 2 is also provided, and the filter 200 is fixedly arranged in the metal isolation box 2, so that the filter 200 is isolated from other circuits in the chassis 1, so as to ensure that the filter 200 is not interfered by external radiation during the communication process with the outside , the external signal does not interfere with the internal circuit.
[0035] The filter 200 is electrically connected to the peripheral circuit through the electrical connector 105 installed on the metal isolation box 2 . The electrical connector 105 includes a J1 interface for signal input and a J2 interface for signal output. The J1 interface and the J2 interface are set separately to realize the sep...
Embodiment 2
[0045] This embodiment is improved on the basis of Embodiment 1, and its improvements are as follows: image 3 As shown, the metal isolation box 2 includes an aluminum alloy panel 21 and an EMI wire shielding net 22; the aluminum alloy panel 21 and the front panel 12 form the box body of the metal isolation box 2, and the EMI wire shielding net 22 is set The inner surface of the aluminum alloy panel 21 effectively isolates and shields the electromagnetic signals of the outside of the case 1 and other circuits inside the case 1 .
[0046] The EMI wire shielding net 22 is woven by EMI wire, and its thickness is no more than 0.5mm; the EMI wire shielding net 22 is filled with neoprene, and its weather resistance is good; the EMI wire shielding net 22 passes through the ring Oxygen resin glued on the aluminum alloy panel.
[0047] The aluminum alloy panel 21 is prepared from an aluminum alloy material through a conductive oxidation process, so that the aluminum alloy panel 21 has...
Embodiment 3
[0050] This embodiment is improved on the basis of Embodiment 1, and the improvement is that: the connections between the front panel 12 and the rear panel 13 and the housing 11 are sealed by EMI gaskets to eliminate electromagnetic leakage. The EMI gasket is any one of conductive rubber, metal elastic gasket or conductive cloth, preferably conductive rubber, which has a good sealing effect and can better eliminate electromagnetic leakage.
[0051] The other parts of this embodiment are basically the same as those of the foregoing embodiments, so details will not be repeated one by one.
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