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逯荣荣

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[问答]

可以一起菊花链转换的USB-C设备/控制器的最大数量是多少?

你好,
我们正在研究一个应用程序,我们需要将菊花链连接到100个相邻的设备以及UB-C。这是一个协作机器人解决方案。每个机器人都有一个具有上游和下游UB-C端口的UB-C控制器。菊花链用于功率和数据,包括图像。希望/目标是我们可以为一个机器人提供动力,所有其他机器人通过菊花链获取动力/数据。几个问题:
1)什么是最大的UB-C设备/控制器可以是菊花一起改变?
2)假设每个机器人消耗最多30瓦特,会有一个限制的数量,可以菊花链通过一个单一的电源插座?
如果这些问题看起来幼稚,就道歉。我们试图验证UB-C是否是正确的解决方案,或者是否应该使用其他方法。我仍然在USP-C规范上。
如果有专家对如何解决这个问题有建议/想法,我们将不胜感激。
最好的,
兰迪。

以上来自于百度翻译


     以下为原文
  Hi,

We are working on a application where we need to daisy chain up to 100 adjacent devices together with USB-C. This is for a collaborative robotics solution. Each robot will have a USB-C controller with an upstream and downstream USB-C port. The daisy chain is used for power and data, including images. The hope/goal is that we can provide power to one of the robots and all the other robots get their power/data via the daisy chain. Couple of questions:

1) What is the maximum number of USB-C devices/controllers that can be daisy changed together?
2) Assuming each robot consumes at most 30 Watts, will there be a limit on the number of devices that can be daisy chained via a single power outlet?

Apologies if these questions seem naive. We're trying to validate if USB-C is the right solution or whether we should use something else. I'm still ramping up on the USB-C spec.

If any of the experts have suggestions/ideas on how to go about solving this, it would be greatly appreciated.

Best,
Randy.

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李磊

2018-11-29 11:55:17
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逯荣荣

2018-11-29 12:10:15
引用: ***4 发表于 2018-11-29 08:37
嗨,兰迪,
1)什么是最大的UB-C设备/控制器可以是菊花一起改变?
每个机器人都有两个C型控制器,负责电源和数据设备、电源和数据源。

嗨,丽莎,
谢谢你的快速反应。关于α2,我们非常希望从相同的USB总线上为所有机器人提供动力。唉,由于空间/成本的原因,我们不能把电池放在每个机器人上,而且我们不能从墙上的插座上运行100个单独的电源线。
这似乎是一个不可能的问题,但是否有任何技术来“传播”或“放大”在每个设备(机器人)的力量,使菊花链中的每一个机器人都能收到30W?例如,虽然整个100个机器人车队可以绘制3000 0W(100×30W),但3000个W分布在100个机器人中。
我读了更多的规范,有一个提到“USB -C通过充电”。每一个机器人都能把动力传递给下一个机器人吗?
不幸的是,我对电源分配/负载方案一无所知,所以对如何解决我们的机器人车队的电力需求的任何其他建议都将受到极大的赞赏。
简而言之,这里是期望结果的图表,即一个电源馈送所有100个机器人。
01 02 03 03
+----+ [ [ ] ] [ [ ] ] [ [ ] ]
“幂”--- [[^ ] ] -[[y] ] -[y]〔α〕
+---+~(?)
再次感谢你的帮助。
兰迪。

以上来自于百度翻译


     以下为原文
  Hi Lisa,
 
Thanks for the quick response. Regarding #2, we would very much like to power all the robots from the same USB-C bus. Alas, due to space/cost reasons, we can't put a battery in each robot and also, we can't run 100 individual power cords from the wall outlet.
 
This may seem like an impossible question, but are there any techniques to "propagate" or "amplify" the power at each device (robot) so that every robot in the daisy chain can receive 30W? For example, while the entire 100 fleet of robots may draw 3,000W (100 x 30W), the 3,000W is distributed among the 100 robots.
 
I was reading the spec some more and there is a mention of "USB-C pass through charging". Could each robot "pass through" the power to the next robot?
 
Unfortunately, I don't know anything about power distribution/load schemes, so any other suggestions on how to solve the power requirements for our fleet of robots would be greatly appreciated.
 
In a nutshell, here is a diagram of the desired outcome, i.e. one power source feeding all 100 robots.
 
                    01          02           03           100
+------+         ['']           ['']            ['']            ['']
|Power| ---└[__]┘---└[__]┘---└[__]┘ ... └[__]┘
+------+          ||             ||            ||               ||
 
Thanks again for your help.
Randy.
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李磊

2018-11-29 12:17:08
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