多层无缝的防破坏防盗防火报警系统的设计

发布时间：2018-04-11 17:30

本文选题：防盗报警系统 + 防火报警系统　；参考：《东华理工大学》2017年硕士论文

【摘要】：本文主要研究一种防破坏报警系统,包括防盗报警系统、防火报警系统。系统由多个报警器构成,各个报警器之间定时地相互发送数据,如果在规定的很短时间T内,任何一个报警器没有接收到其它任何一个报警器发送的数据,它就会自动触发报警。例如:在防盗报警系统中有多个报警器,如果入侵者破坏一个或者多个报警器,将自动触发系统中剩下的报警器,在很短一段时间之后发出报警。本文还研究一种防破坏的防火报警系统。在化工厂、矿井、加油站、办公楼、商场、影剧院、住宅小区等场所,对防火报警系统的要求是十分高的。当出现火灾险情时,报警器可能被烈火摧毁;有些火灾还可能引起爆炸,从而损坏报警器。如果对报警器加装防火外壳,不仅在硬件成本上会增加,而且烟雾传感器和温度传感器等薄弱之处仍然容易烧毁或炸毁。本文的报警系统采用zigbee为核心器件。所制作的样品有10个zigbee节点,每个节点就是一个防盗报警器或防火报警器。每个防盗报警器都配备有人体红外传感器。各节点以广播地形式相互发送数据,从而构建了一种网状拓扑结构的报警系统。当报警系统中一个或者多个报警器被破坏,其他报警器能立即发出报警,并且可以通过上位机监测到哪些报警器受到破坏。当报警系统中任何一个报警器检测到入侵者时,所有报警器都会发出报警。本课题还通过实验来验证这种报警系统的效果。本文的防破坏报警系统还可以组成多层网络,本文研究了多层防盗报警网络的自组织方法,推导了这种自组织方法的数学式并用matlab软件对其作了仿真。当防盗报警节点被不规则放置时,各防盗报警器的保护区域自动连接成一个没有漏缝的封闭圈,使入侵者无缝可钻。当放置的防盗节点足够多,将形成多个没有漏缝的封闭圈,从而实现多层防御。于是,入侵者在破坏其中一层防盗报警网络后,还要面对下一层防盗报警网,从而增加入侵难度。为了能够让防盗报警系统更加精确地确定入侵者的位置,本文研究了一种改进型的测电波到达时间(TOA)算法。其特点就是当多个防盗报警节点同时检测到入侵者时,首先筛选出三个最合适的报警器,然后利用三边相交法来计算出入侵者的具体坐标。本文的研究成果维护社会治安有意义,对防灾安全有意义。
[Abstract]:This paper mainly studies a kind of anti-damage alarm system, including anti-theft alarm system and anti-fire alarm system.The system consists of a plurality of alarms, each of which periodically transmits data to each other, if, within a specified short period of time T, any one alarm does not receive the data sent by any of the other alarms,It automatically triggers the alarm.For example, there are multiple alarms in the anti-theft alarm system. If the intruder breaks one or more alarms, the remaining alarms in the system will be automatically triggered, and the alarm will be issued after a very short period of time.This paper also studies a fire alarm system for anti-damage.In chemical plants, mines, gas stations, office buildings, shopping malls, theatres, residential areas and other places, fire alarm system requirements are very high.In the event of a fire hazard, the alarm may be destroyed by a fire; some fires may also cause an explosion, which may damage the alarm.If an anti-fire shell is added to the alarm, not only will the cost of hardware increase, but also weak spots such as smoke sensors and temperature sensors will still easily burn down or blow up.The alarm system in this paper adopts zigbee as the core device.The sample has 10 zigbee nodes, each node is a burglar alarm or fire alarm.Each burglar alarm is equipped with a human infrared sensor.Each node transmits data to each other in the form of broadcast ground, thus a network topology alarm system is constructed.When one or more alarms in the alarm system are damaged, other alarms can immediately send out an alarm, and which alarms can be detected by the upper computer.When an intruder is detected by any alarm in the alarm system, all alarms give an alarm.This subject also verifies the effect of this alarm system through experiments.In this paper, the anti-damage alarm system can also form a multi-layer network. In this paper, the self-organizing method of the multi-layer anti-theft alarm network is studied, and the mathematical formula of the self-organizing method is deduced and simulated by matlab software.When the anti-theft alarm node is placed irregularly, the protection area of the anti-theft alarm is automatically connected into a closed ring without leakage, which makes the intruders can be drilled seamlessly.When sufficient number of anti-theft nodes are placed, a number of closed rings without cracks will be formed, thus achieving multiple layers of defense.Therefore, after the intruders break one of the anti-theft alarm network, they have to face the next layer of anti-theft alarm network, thus increasing the difficulty of intrusion.In order to make the anti-theft alarm system more accurate to determine the location of intruders, this paper presents an improved algorithm for measuring the arrival time of radio waves (TOAs).Its characteristic is that when multiple anti-theft alarm nodes detect intruders at the same time, three most suitable alarms are first screened, and then the specific coordinates of intruders are calculated by using the triangulation method.The research results of this paper are meaningful to maintain public order and to prevent disaster.
【学位授予单位】：东华理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP277

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