Design of alarm terminal for wild workers in distress based on dual mode positioning system
Author:
Affiliation:
Fund Project:
摘要
|
圖/表
|
訪(fǎng)問(wèn)統計
|
參考文獻
|
相似文獻
|
引證文獻
|
資源附件
|
文章評論
摘要:
為了解決沒(méi)有移動(dòng)網(wǎng)絡(luò )信號覆蓋地區的荒野工作人員遇險救援不便的問(wèn)題,設計了一種基于GPS(Global Position System)/北斗衛星導航系統的野外遇險人員報警定位終端。該報警定位終端以ARM(Acorn RSIC Machine)Cortex-M4為控制核心,搭配兩種不同顏色的LED報警閃爍燈和液晶顯示屏幕,并在報警終端上設計了功率放大器電路,工作時(shí)報警終端上的GPS/北斗雙模芯片精確定位人員位置信息,采用LoRa(Long Range)無(wú)線(xiàn)傳輸模塊將荒野工作人員的安全信息發(fā)送至附近的固定基站或者基站車(chē)上,其一旦接收到報警信息,便可迅速作出響應,及時(shí)對遇險人員進(jìn)行救援。同時(shí),在基站上使用不同增益的接收天線(xiàn),或者改變LoRa無(wú)線(xiàn)傳輸模塊的空中速率,可以使荒野工作人員的報警信息傳輸距離變的更遠。實(shí)驗結果表明,該報警終端具有實(shí)用性強、定位精度高、便于攜帶、工作穩定可靠,傳輸距離長(cháng)等優(yōu)點(diǎn)。
Abstract:
To solve the problem that the rescue of wild workers without mobile network signal which in the coverage areas,an alarm positioning terminal for wild workers in distress is developed based on the GPS/BeiDou satellite navigation system.The alarm positioning terminal is presented which is used the ARM Cortex-M4 as the core.On the one hand,it has LCD screen and LED flashing light with two different colors,on the other hand,the power amplifier circuit is designed on the alarm positioning terminal.The terminal uses the GPS/BeiDou positioning module to position the information of wild workers precisely,the information of security for the wild workers is sent to the nearby fixed base station or mobile base station by the LoRa wireless transmission model.Once received the alarm information,the response is decided quickly,and the rescuing is implemented timely.At the same time,the base station uses the different receiving antennas,or changes the airborne rate of the wireless transmission module,the transmission distance with the alarm information of the wild workers can be longer.Experimented results prove that the alarm positioning terminal has many advantages,such as the high practicability,high positioning accuracy,can be carried easily,stable and reliable working property,longer transmission distance and so on.