原标题：TI TIDA-01519消防和一氧化碳(CO)检测参考设计

　　TI公司的TIDA-01519是消防和一氧化碳(CO)检测参考设计,能识别典型告警源和无线地向用户报警,3kHz和520Hz告警频率,底BOM成本设计,根据告警远近可变麦克风增益,〈1GHz无线通信可使传感器进行云配置,主要用于告警检测,智能传感器生态系统,消防安全和建筑物自动化.本文介绍了参考设计TIDA-01519主要特性和系统指标,框图,电路图,材料清单和PCB设计图.

　　This reference design is a carbon monoxide (CO) and fire alarm detector reference design which can identify typical alarm sounds, and has the wireless capabilities to alert the user if one is detected. This design is intended for home automation and "smart" environmental sensing. Once a 3kHz or 520Hz signal frequency is identified based on FFT power spectral density analysis, this system determines whether an alarm is occurring which can then be used with sensor to cloud to alert the homeowner in the case of an alarm outside of their detectible hearing range.

　　Many residential and commercial building are required to have fire and carbon monoxide (CO) detectorslocated in specific places around the structure as regulations permit. These alarm systems can be cut offfrom other sections of the building or home, making an isolated fire more likely to spread to other sectionsof the building if the alarm is outside of the inhabitants’hearing range. To address this problem, devicesdeveloped today can detect and relay this alarm to a person—in some cases, anywhere in the world. Mostof these systems run on battery or wall power only, potentially increasing the likelihood of an undetectedfire or CO situation should the batteries die or the power go out for a period of time.

　　enabled by Texas Instruments’ low-power amplifiers, comparators, load switches, and the SimpleLink™ultra-low-power wireless MCU platform, the Fire and Carbon Monoxide Alarm Detector Reference DesignWith Low BOM Cost and Integrated Battery Backup demonstrates a fire and CO detector while optimizingboth cost and power sourcing.

　　At a high level, this design consists of a 120-V AC wall-powered rectification subsystem, composed ofboth discrete components as well as the UCC28881. The signal chain consists of a two-channel TLV313low-power, precision op amp used for both amplification as well as an antialiasing filter. The microphoneinput to this signal chain is an InvenSense ICS-40300 MEMs microphone with a wide dynamic range. Thepower ORing consists of an LM2903 comparator and two TPS27081 load switches. This ORing circuitry isdesigned to seamlessly switch between the 3.9-V output rail of the UC28881 and a 3.7-V Li-Ion battery,providing the TPS78033022 with the voltage needed for the 3.3-V regulated output. These peripheralsalong with the integrated CC1310 device and detection firmware make up this reference design.

　　This design guide addresses the component selection, design theory, and the testing results of thisreference design system. The scope of this design guide gives system designers a head-start inintegrating TI’s low-power, cost-optimized analog components, and the SimpleLink ultra-low-powerwireless MCU platform.

　　图.参考设计TIDA-01519外形图

　　参考设计TIDA-01519主要特性:

　　3kHz and 520Hz alarm target frequencies

　　CO and fire alarm detection

　　Low BOM cost design

　　Variable microphone gain based on proximity to alarm

　　Sub-1GHz wireless communication enabled for sensor to cloud configuration

　　参考设计TIDA-01519应用:

　　• Alarm Detection

　　• "Smart" Sensor Ecosystem

　　• Fire Safety

　　• Building Automation

　　参考设计TIDA-01519主要系统指标:

　　图.参考设计TIDA-01519和SmartRF06连接图

　　参考设计TIDA-01519材料清单:

　　详情请见:

tidrt51.pdf

tidrt50.pdf

tidrt53.pdf

tidudd1.pdf