Ignition circuit for solid micro-propeller and manufacturing method of ignition circuit

Abstract

The invention discloses an ignition circuit for a solid micro-propeller and a manufacturing method of the ignition circuit. The ignition circuit is arranged on a substrate and is an array composed of a*b ignition units in a lines and b columns. Each ignition unit comprises an ignition resistor and a diode. The ignition resistors are thin film resistors and are arranged on the front face of the substrate, the diodes are arranged on the back face of the substrate, and the ignition resistors and the diodes are connected in series through metalized via holes formed in the substrate. The manufacturing method includes the steps that a, the substrate is punched and the via holes are metalized; b, the ignition resistors, leads and electrode regions are manufactured on the front face of the substrate; and c, leads and electrode regions are manufactured on the back face of the substrate and the diodes are attached to the back face of the substrate. By the adoption of the ignition circuit and the manufacturing method of the ignition circuit, ignition can be performed reliably at the low ignition voltage, power consumption is low, the logic addressing function is achieved, and the requirement for independent ignition or combined ignition can be met.

Description

technical field [0001] The invention belongs to the technical field of pyrotechnics, and relates to an ignition circuit for a solid micro-thruster based on micromachining technology and a preparation method thereof, in particular to a metal film bridge ignition circuit, which is a core component of a MEMS solid micro-thruster and can Satisfied with low ignition voltage, reliable ignition under small ignition power. Background technique [0002] The micro solid thruster is a solid propellant micro propulsion system based on MEMS technology, which is suitable for precise orientation and height control of micro satellites with limited space. The structure of a typical MEMS micro solid thruster adopts a sandwich structure, the bottom is the ignition circuit layer, the middle part is the combustion chamber layer, and the top is the nozzle layer. The working principle of the micro thruster is that the ignition circuit addresses and ignites the propellant in the combustion chamber...

AI Technical Summary

Problems solved by technology

[0007] The existing technology mainly has the following disadvantages: a) high ignition voltage; b) high ignition power

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