PHARPS32200000電源模塊,F8-G2B9B3B6使用進(jìn)展
供電需求：系統(tǒng)主要的變化在于增加了協(xié)議轉(zhuǎn)換的功能，因此新增的供電電源的需求主要是給各類通訊口、主控系統(tǒng)供電① 主控系統(tǒng)供電需求：
12V需求：上行通信模塊+下行通信模塊，合計(jì)約需3.3W。
5V需求：USB供電需求供電電流100mA。
3.3V需求：主系統(tǒng)按照3.3V/200mA計(jì)算。
PHARPS32200000電源模塊,F8-G2B9B3B6使用進(jìn)展② 通信接口供電需求：
主M-BUS：共2路，每一路帶128塊表計(jì)，功率約需20W。
從M-BUS：從MBUS芯片供電從MBUS總線上汲取，隔離光耦供電可以從MBUS芯片上取，因此從MBUS電路無需額外電源。
2路485供電：功率約需0.5W。
對(duì)外供電12V：帶載能力不小于1A，此路電源與主M-BUS電源共地且不同時(shí)工作。供電方案介紹：如上圖3所示左側(cè)為主控系統(tǒng)供電。其中MCU及USB口的供電均采用自搭降壓方案降壓后提供；上下行通訊模塊的供電則直接由AC-DC電源LO26-22D3612-04的12V輸出電壓提供。框圖右側(cè)為通信接口供電。MBUS總線的供電直接由AC-DC電源LO26-22D3612-04的36V輸出提供；12V對(duì)外輸出供電則通過自搭降壓方案降壓后對(duì)外輸出；485通訊的供電也通過36V自搭降壓后提供。
供電方案的優(yōu)勢(shì)：從方案圖上可以看到，雖然供電的電壓需求種類繁多，但是需要隔離的主要是主控系統(tǒng)與通訊接口之間。因此設(shè)計(jì)中我們選用的電源是12V與36V間隔離輸出的方案，其他的地方都采用自搭降壓的方式提供。輸出2路之間的隔離電壓高達(dá)4000VAC，同時(shí)220VAC交流輸入端口對(duì)兩路直流輸出端口的隔離電壓高達(dá)4500VAC。這樣的方案大大的降低了電源模塊的體積，同時(shí)提升了整個(gè)設(shè)計(jì)的性價(jià)比。路輸出之間的高絕緣耐壓要求，苛刻的成本要求，完善的保護(hù)特性要求。
The video monitoring system generally adopts optical fiber transmission to monitor the car barrier of the sports car protection device. This paper mainly introduces a control system of the sports car protection device based on RS485 twisted pair transmission network, which can judge the running position of the mine car, open and close the car barrier in time, and ensure the transportation safety; At the same time, upload and display the operation status information of the barrier to the winch driver.
The centralized control mode of one-to-one transmission of the status information of the barrier from the kilometer underground to the winch room (control room) is obviously not suitable, and the networked distributed control mode has become an inevitable choice.
The process requires that when the transport tramcar runs up or down to the closed barrier, it must lift up and open the barrier to make the tramcar pass smoothly. After the tramcar passes through the barrier completely, the barrier must fall and close, and be prepared for safety protection. As safety protection
