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Using Offsets to Generate Multiple Orthogonal Channel Sequences in Frequency Hopping Systems

A technology of frequency hopping sequence and safety system, applied in the field of safety system, can solve problems such as safety system interference

Active Publication Date: 2021-08-17
HONEYWELL INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] While conventional security systems work well, they often experience interference from nearby security systems

Method used

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  • Using Offsets to Generate Multiple Orthogonal Channel Sequences in Frequency Hopping Systems
  • Using Offsets to Generate Multiple Orthogonal Channel Sequences in Frequency Hopping Systems

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0011] While the disclosed embodiments may take many different forms, specific embodiments thereof are shown in the drawings and will be described in detail herein, it is to be understood that the disclosure is to be considered as illustrative of the principles thereof and the best mode of practicing the same, and are not intended to limit the application or claims to the specific embodiments illustrated.

[0012] figure 1 is a block diagram of security system 10 shown generally in accordance with the illustrated embodiment. Included within the security system may be a plurality of sensors 12 , 14 that detect threats within the guarded geographic area 16 . A threat sensor may be embodied in any of a number of different forms. For example, at least some of the sensors may be limit switches placed on doors and / or windows that provide entry into or egress from the fenced area. Others of the sensors may be passive infrared (PIR) sensors placed inside the area and intended to de...

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Abstract

A system comprising a control panel of a security system, a memory of the security system having a reference frequency hopping pattern and a reference frequency offset stored therein, using the reference frequency hopping pattern and each a frequency and a fixed frequency offset per hop for a plurality of wireless threat sensors in communication with the control panel, wherein the fixed frequency offset is an integer multiple of the reference frequency offset, detected using the reference frequency hopping sequence any nearby security systems and determine said integer multiple of said reference frequency offset used by each of said nearby security systems, said processor of said security system and configured by said plurality of sensors to not be Any nearby security system using said fixed frequency offset processor at a selected integer multiple of said reference frequency offset.

Description

technical field [0001] This application relates to security systems, and more particularly to wireless security systems. Background technique [0002] Systems are known for protecting people and property in protected areas. Such systems are typically based on the use of one or more sensors that detect threats within the area. [0003] Threats to people and property may originate from any of a number of different sources. For example, fire can kill or injure residents trapped in a fire in their home. Similarly, carbon monoxide from fire can kill people in their sleep. [0004] Alternatively, unauthorized intruders, such as burglars, may present a threat to property within the area. Raiders have also been known to injure or kill people living in the area. [0005] As far as intruders are concerned, sensors may be placed in different areas based on their respective usage in those areas. For example, if people are present during certain parts of the normal day but not othe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/713H04B1/715H04B1/7156H04L25/03H04W12/08H04W12/121
CPCH04B1/713H04B1/715H04B1/7156H04L25/03178H04W12/08H04B2001/7154H04B1/7143G08B25/10G08B25/14
Inventor J.J.奥蒂斯A.G.贝雷佐夫斯基G.夏马
Owner HONEYWELL INT INC