Fire extinguishing bomb based on three-axis acceleration sensor and control method

Abstract

The invention discloses a control method of a fire extinguishing bomb based on a three-axis acceleration sensor. The control method comprises the following steps that S1, a control circuit board of the fire extinguishing bomb is firstly set to be delayed by 100 milliseconds after power supply; S2, after peripheral equipment works stably, the control circuit board firstly detects the states of a control circuit, and if all the states of the control circuit are normal, the control circuit board is delayed by 1,000 milliseconds after power supply to serve as safety time; and S3, then, the control circuit board starts to detect the overload value of the three-axis acceleration sensor in real time, and when the overload value of the three-axis acceleration sensor exceeds a set threshold value, the control circuit board outputs ignition initiation energy to ignite the central explosive to complete dry powder throwing. The three-axis acceleration sensor is adopted as a sensitive device, overload signals generated when a bomb body falls to the ground are monitored in real time and serve as the basis of a collision and explosion strategy, the explosion point precision is high, the central explosive can be ignited to complete dry powder throwing before the bomb body is disassembled, and reliability of the effect of the fire extinguishing bomb is improved.

Description

technical field [0001] The invention relates to the technical field of forest fire extinguishing, in particular to a fire extinguishing bomb based on a triaxial acceleration sensor and a control method. Background technique [0002] Forest fire is one of the main natural disasters due to its suddenness, destructiveness, and difficulty in handling. Once it occurs, it will be unstoppable. For this reason, it is an important measure for forest fire prevention to extinguish the fire in time from the source of the forest fire. Commonly used fire extinguishing appliances include airborne water mist forest fire extinguishing bombs, aviation aircraft equipment fire extinguishers, water mist cloud fire extinguishing bombs, etc. When a fire occurs, it is necessary to use the above-mentioned fire extinguishing device to extinguish the fire. [0003] The paper "Delay Control Method for Remote Forest Fire Extinguishing Bomb Based on Microcontroller" proposes a fire extinguishing bomb, ...

AI Technical Summary

Problems solved by technology

[0005] 1. When the projectile is launched, the control circuit of the fire extinguishing projectile will start to fix the delay. Due to the difference in projectile speed, the flight distance of the projectile will also vary within the same time period, resulting in low explosion point accuracy;

[0006] 2. Due to the adoption of the fixed delay detonation control strategy, the projectile must be air-exploded above the fire field. If the shooting angle deviates and the projectile falls into the fire field before the delay time arrives, the projectile will disintegrate and cause detonation failure.

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