jeffrey815(Smartiecat)
That thing use a lot more frequently (it needs to be active all the time to detect + transmit) than the water meter transmitter.
So I'm not surprised if the water meter transmitter can last a long long time.
(#9038593@0)
Last Updated: 2014-10-11
This post has been archived. It cannot be replied.
Replies, comments and Discussions:
-
枫下家园 / 生活杂事 / 一直没搞懂一个问题，水表装在自家地下室，自来水公司是如何抄表的？
-grainsw(两只小猪之神勇小白鼠);
2014-10-11
(#9038387@0)
-
那天小那谁说是无线了？
-meisuowei(/);
2014-10-11
(#9038390@0)
-
应该不是吧。水表没接电源，怎么无线呢？
-isup(isup);
2014-10-11
(#9038473@0)
-
刚到地下室看了看，水表上有接电线，应该是直接连到外面总表的。外面应该可以读表
-isup(isup);
2014-10-11
(#9038484@0)
-
North York的是远程读表的，水表上装了个转换器。
-vicky2007(vicky);
2014-10-11
(#9038485@0)
-
远程还可以理解，连一根线就行了。无线，需要自带电源。不过水表数据不用realtime，估计太阳能见光就发一点信号出去，平均每天发对一次信号就行了。万一地下室装修的太黑，就不知道怎么办了
-isup(isup);
2014-10-11
(#9038496@0)
-
装的时候，安装的人说是自带电源的。
-vicky2007(vicky);
2014-10-11
(#9038506@0)
-
It has a wireless transmitter which runs on battery. I was told that battery lasts 100 years. It just admit a (few) signals once a quarter.
-jeffrey815(Smartiecat);
2014-10-11
(#9038487@0)
-
不可能有这样的电池吧？就算买新的电池放在那里不用，也有过期日期的
-isup(isup);
2014-10-11
(#9038500@0)
-
What kind of power source does my new wireless transmitter require?
-jeffrey815(Smartiecat);
2014-10-11
{187}
(#9038539@0)
All wireless transmitters come equipped with a factory installed battery. The battery is designed to last for the lifespan of the wireless transmitter, and will never need to be replaced.
-
我认为至少十年电池应该没问题。但我很怀疑这个电池能用100年。lifespan这个词很tricky
-isup(isup);
2014-10-11
(#9038559@0)
-
It has to be longer than that. Lutron has a battery powered occupancy sensor, which controls a light switch via wireless technology, the battery it claims to last 10 years.
-jeffrey815(Smartiecat);
2014-10-11
{212}
(#9038593@0)
That thing use a lot more frequently (it needs to be active all the time to detect + transmit) than the water meter transmitter.
So I'm not surprised if the water meter transmitter can last a long long time.
-
至少这几年,或wireless transmitter,高性能电池应用以前,抄表人员也不需要进屋的.所以wireless不是最初方案,水表上应该有根导线通往室外,但那是无源的,不须电池,可能连着表内的一个线圈/电阻/电容什么的,抄表人员在屋外用电/磁探头之类的就可以读取表数
-bentley(小兔);
2014-10-12
(#9038647@0)
-
这个才是正解，多伦多用的啥新技术不知道，我们这就是从电表拉根线到室外，抄表的就从室外的接口读取数据。。。
-ding_ding(丁_丁);
2014-10-12
(#9038663@0)