PHARPS32200000电源模块,F8-G2B9B3B6使用进展
供电需求：系统主要的变化在于增加了协议转换的功能，因此新增的供电电源的需求主要是给各类通讯口、主控系统供电① 主控系统供电需求：
12V需求：上行通信模块+下行通信模块，合计约需3.3W。
5V需求：USB供电需求供电电流100mA。
3.3V需求：主系统按照3.3V/200mA计算。
PHARPS32200000电源模块,F8-G2B9B3B6使用进展② 通信接口供电需求：
主M-BUS：共2路，每一路带128块表计，功率约需20W。
从M-BUS：从MBUS芯片供电从MBUS总线上汲取，隔离光耦供电可以从MBUS芯片上取，因此从MBUS电路无需额外电源。
2路485供电：功率约需0.5W。
对外供电12V：带载能力不小于1A，此路电源与主M-BUS电源共地且不同时工作。供电方案介绍：如上图3所示左侧为主控系统供电。其中MCU及USB口的供电均采用自搭降压方案降压后提供；上下行通讯模块的供电则直接由AC-DC电源LO26-22D3612-04的12V输出电压提供。框图右侧为通信接口供电。MBUS总线的供电直接由AC-DC电源LO26-22D3612-04的36V输出提供；12V对外输出供电则通过自搭降压方案降压后对外输出；485通讯的供电也通过36V自搭降压后提供。
供电方案的优势：从方案图上可以看到，虽然供电的电压需求种类繁多，但是需要隔离的主要是主控系统与通讯接口之间。因此设计中我们选用的电源是12V与36V间隔离输出的方案，其他的地方都采用自搭降压的方式提供。输出2路之间的隔离电压高达4000VAC，同时220VAC交流输入端口对两路直流输出端口的隔离电压高达4500VAC。这样的方案大大的降低了电源模块的体积，同时提升了整个设计的性价比。路输出之间的高绝缘耐压要求，苛刻的成本要求，完善的保护特性要求。
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
