node-red 进出实现的求助。

dgmax

捣鼓了一个晚上，还是跟yaml 写一样，冲突了。就是想不通，求大神支招。

一个门磁，一个感应开关。

进入：门打开后开灯，门关了，到了感应器关灯。
出去：感应器有人开灯，感应器无人，出门后关灯。

我捣鼓的思路了，门打开后看灯状态后面忽略，门关后因为不知道何时人才能到达感应器，所以启动2分钟每隔0.5秒循环去查看感应器状态，后面忽略。

但是2个都在循环内就冲突了。开门后只需要检测到一次感应器即可跳出循环。请教用什么来实现？


前天弄好了node-red，想把yaml改过来。脑瓜子嗡嗡的！！

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Assistant(dgmax)","legacy":false,"hassio":true,"rejectUnauthorizedCerts":true,"ha_boolean":"http://hassio/homeassistant","connectionDelay":true}]

复制代码

luox

首先我认为你表达的设计不够严谨。（设备可能误触，而意外导致灯保持开启）

其次本人小白，不知道怎么跳出循环，但我觉得应该尽量避免局部循环，可以利用变量实现各种效果。

然后如果让我利用你的设备，套用你的想法去设计，我或许使用以下方法：

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30","rules":[{"t":"set","p":"light_time","pt":"global","to":"30","tot":"num"}],"action":"","property":"","from":"","to":"","reg":false,"x":1680,"y":380,"wires":[[]],"icon":"node-red/hash.png"},{"id":"256a7698.8dad1a","type":"comment","z":"81157761.3a9db8","name":"变量LightTime 为 30(s)","info":"","x":1700,"y":340,"wires":[]},{"id":"a8e8aa96.e5afd8","type":"server","z":"","name":"Home Assistant"}]

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实现的效果：
1.只有指定时间内才能开启灯光。
2.打开门时会开启灯光，保持300秒 或 经过传感器后5秒关灯。
3.执行完第2点后，路过传感器时，灯会保持开启60秒后关灯。
4.手动开启灯光后，将保持30秒后关闭。

可能存在的问题：
1.将有1秒钟的延迟。
2.灯的保持开启的时间可能不尽人意。
3.相对占用更多的运行资源。

最后，各种场景，会有各种方法，希望楼主能找到适合自己的方法。

xieahui

luox 发表于 2019-7-27 13:50
首先我认为你表达的设计不够严谨。（设备可能误触，而意外导致灯保持开启）

其次本人小白，不知道怎么跳出 ...

传文件，现在论坛代码出错的

dgmax

luox 发表于 2019-7-27 13:50
首先我认为你表达的设计不够严谨。（设备可能误触，而意外导致灯保持开启）

其次本人小白，不知道怎么跳出 ...

多谢你，初入node坑不会用变量。求个可以学习的网站，官网打不开

嗯代码无法导入。

neroxps

需求分析

看楼主的意思应该和我的人数判断差不多，也是两个传感器一组，来判断人进去还是离开，我总结了下有以下几点。

开灯条件：

1. 当门打开，立即开灯（楼主可以自己加亮度或者时间条件，我这里没有体现）
2. 当人走进走廊人体传感器触发，立即开灯。

关灯条件：

1. 当人体传感器触发后，一直循环等待门磁ON，如果门磁ON了，就等待门磁OFF，代表人开门进屋里，灯关闭。
2. 当人体传感器触发后，但是循环等待2分钟依然等不到门打开，代表人进来，又折返，灯关闭。
3. 当门磁ON，代表门打开，一直循环等待人体传感器 ON，如果人体传感器 ON，就等待人体传感器 OFF，代表人离开了，灯关闭。

特殊条件：

1. 如果人体传感器或门一直打开，即使2分钟时间到达，也会重新进入循环2分钟，不会应该执行关灯。

实践

条件列明后，就可以很好理解，其实两个传感器，人从门里出去，就是门磁开做触发点（或者传感器ON），他们关闭不应该当作触发条件，两个传感器作为联动条件，A传感器打开，到B传感器打开，然后B传感器OFF，最好能检测 A传感器也OFF，那么就代表人从哪里离开了，详细逻辑可以看看我之前写的人数检测帖子。 《廉价人体存在解决方案，区域人数统计》

未实现的条件

当人打开门，然后走到人体传感器触发区域，然后又折返，一直开着门，超过2分钟。这样当人体传感器OFF后，十秒后会关灯。其实可以加检测条件，在第二次循环流程那边，加给条件，当两个传感器都OFF了，才关灯。当然这其实也有问题，就是人开门关门后，不走，就坐在门口前面也会关灯。例如楼主晚上要在门口干点什么吧哈哈。

写在最后

循环里面使用次数，不要使用时间，否则超时不生效。例如如果楼主要2分钟，每0.5秒触发一次，那么就写 240次，我这因为方便调试设的次数比较短，你自己修改下。

flows.rar (2.54 KB, 下载次数: 43)

2019-7-27 23:00 上传

点击文件名下载附件

jyz_0501

https://detail.tmall.com/item.ht ... amp;id=562389133726

我看着这个不错~~

xieahui

jyz_0501 发表于 2019-7-29 09:19
https://detail.tmall.com/item.htm?spm=a1z0d.6639537.1997196601.670.206c7484mH0lrP&id=562389133726

...

统计客流量应该不错！！  

lxiaoyang

这是放在进出门的吧，房间好像有点不好使

dgmax

neroxps 发表于 2019-7-27 23:00
[md]
# 需求分析

多谢N神指点！  《廉价人体存在解决方案，区域人数统计》这贴子我有读过。

neroxps

dgmax 发表于 2019-8-1 20:50
多谢N神指点！  《廉价人体存在解决方案，区域人数统计》这贴子我有读过。 ...

这flow可以精简下的，因为出和进来的部分流程可以复用。不过最好是自己能理解，写完过了半个月，再回来看，一眼就知道怎么改才是最好的~