Solid ignition module with input control anti-interference design and operation method

Abstract

The invention discloses a solid ignition module with an input control anti-interference design and an operation method. The input terminals of the 4-way solid ignition circuit are controlled by positive terminals or negative terminals; the output terminals use independent output to realize individual control of ignition and normal serial and parallel output. Realize redundant control ignition, or reverse series-parallel output to realize two-way output ignition; when the control input terminal of the input threshold control circuit does not input the control signal or the input control signal is lower than the signal of the pulse width designed by the anti-interference control circuit, the solid state The output terminal of the ignition module is disconnected; when the control signal input by the control input terminal of the input threshold control circuit exceeds the signal of the pulse width designed by the anti-interference control circuit, the output terminal of the solid ignition module is connected. The invention has good functions of suppressing millisecond-level pulse interference and redundant control.

Description

Technical field [0001] The invention relates to the technical field of solid state relays, in particular to a solid state ignition module with an input control anti-interference design and an operation method. Background technique [0002] The ignition control method adopted by the current system is mechanical contact output, and electromagnetic relays are used for combined redundant design to form a mechanical contact output ignition module. The ignition current is generally the overload current of the relay contacts. The use of this ignition control mode has the following disadvantages: [0003] ① There is contact ablation when the electromagnetic relay contacts switch the load. The overload assessment index is generally 100 times, and the number of lifespans is less. Although the use of 4 sets of series and parallel redundancy can increase the number of lifespans, it is reliable in terms of reliability. Relatively low sexual indicators; [0004] ②Higher requirements for the con...

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Problems solved by technology

[0003] ① There is contact ablation when the electromagnetic relay contacts switch loads. The overload assessment index is generally 100 times, and the life times are relatively small. Although the use of 4 sets of series-parallel redundancy can increase the life times, it is reliable in terms of reliability prediction. Sex indicators are relatively low;

[0004] ② Mechanical relays have higher requirements for internal excess control;

[0005] ③ It is difficult to improve the mechanical environment tolerance;

[0006] ④The power consumption of the control is relatively large, and the drive of the signal control circuit needs to be driven by an additional amplifier circuit

However, the turn-on time of the current solid-state relay is microseconds, and when it is applied to ignition control, a microsecond-level interference pulse at the control end will cause misfire

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