频率计数问题Problems with frequency counting

问题描述

你好

Hi

我正在建立一个系统来测量闭环系统上的水压，也可以测量排放到排水管的水和空气。水压系统工作正常（我使用的是压力传感器）。在排水管线上，我显然无法使用压力传感器，所以我使用了一个根据霍尔效应原理工作的旋转面板开关。这导致了我的问题，因为在测试模式下，我无法在阈值触发器上测量高于40hz的频率。输入I5保持高，但一旦超过40hz，触发器就不计数，因此输入降低（我还有一个单独的仪表连接测量频率……）。

Iam building a system to measure water pressure on a closed loop system and also to measure water and air blown down to drain. The water pressure system works fine (i am using a pressure transducers) On the drain line i obviuosly cannot usea pressure transducer so i am using a rotary padel switch which works on the hall effect principle..Thiis iscausing me problems as i cannot seem to measure higher than 40hz on the threshold trigger in test mode. Input I5 stays high but once i go above 40hz the trigger does not count and therefore the input drops low (I have a seperate meter attached measuring frequency... as well).

谢谢

Thanks

肖恩

Sean

推荐答案2

你好

Hi,

你的节目在哪里？

where is your program?

推荐答案3

你好，赫尔穆特，

Hi Helmut,

请参阅随附的一个测试程序，我正在运行中，但存在所述问题

Please find attached a test program i am running with stated problem

谢谢你的帮助

Thanks for your help

肖恩

Sean

推荐答案4

您必须使用输入I3、I4、I5或I6。

You have to use input I3, I4, I5 or I6.

即快速输入，最大5 kHz，其他输入最大4 Hz

That are quick inputs, they are max 5 kHz, the other inputs max 4 Hz

所有LOGO上都没有！”s

Not on al the LOGO! 's

你用什么样的LOGO？

What kind of LOGO you use?

推荐答案5

我在一个类似的应用程序中也遇到了同样的问题。我通过使用12/24RCo徽标（这些徽标的输入速度肯定很快）和光耦解决了这个问题。

I had the same problem in a similiar application. I solved it by using a 12/24RCo Logo (these have fast inputs for sure) and by using a optocoupler.

您使用的是哪种流量传感器？我现在使用的是GF签名P51530-p0。

What kind of flow sensor are you using? I'm using at this moment a GF signet P51530-p0 .

但我也有其他类型的传感器，我还看到了一个Burkert流量传感器，可以随时使用P

But I also have other types of them, and i've seen also a Burkert flowsensor laying around, ready to be used. :P

我不得不说，我必须在系统上测试它，但我的程序看起来很有前途。

I have to say i have to test it still in action on the system it self, but my program looks promising.

我看过你的程序，你使用了一个与我完全不同的解决方案（更简单）。

I've looked at your program, and you using quite a different solution (simpler) then me.

我稍后会发布我的解决方案。（我的解决方案必须能够为客户显示当前流量（m3/H）。）

I'll post mine solution later. (My solution had to be able to show the current flow in m3/H for the customer.)

推荐答案6

你好，schapie，

Hi schapie,

我使用的是AC/DC24V标志！24钢筋混凝土。该传感器为burkert流量传感器8030。

I am using a AC/DC24V LOGO!24RC. The sensor is a burkert flow sensor 8030.

我提供的程序是一个测试程序，因为我想在上传到主程序之前对电路进行台架测试。

The program i upploaded is a testprogram as i wanted to bench test the circuit before i uploaded to the main program.

您提到您使用了光耦……您是否使用了相同的电源装置将光耦的隔离侧馈入徽标上的输入？如果是这样，您是否注意到峰间电压有任何差异？

You mentioned that you used an optocoupler...did you use the same power supply unit to feedthe isolated side of the optocoupler into the input on the logo? If so, did you notice any difference in the peak to peak voltage?

我开始怀疑我是否有一个错误的标志，因为我真的不明白为什么它不起作用。输入电压保持不变，唯一似乎变化的是频率。

I am starting to question whether i have a faulty logo as i really cannot see why it is not working. The input voltage stays the same, the only thing that seems to change is the frequency.

很高兴看到你的解决方案。

It would be good to see your solution.

推荐答案7

Sean你好，

Hi Sean,

您的LOGO-类型没有快速频率输入-最大频率为5 Hz！！！

your LOGO!-type has NO fast frequency inputs - the maximum frequency is 5 Hz !!!

-

使用其他LOGO-基本模块。。。。

Use a other LOGO!-basic module....

或者看看我的答案

OR look under my answer at

水流传感器-计数脉冲有帮助！

Water Flow sensor - Counting Pulses HELP!

顺致敬意，

Best regards

槟榔

Betel

推荐答案8

你好，Betel，

Hi Betel,

谢谢你的帖子。上周当我开始调查我的问题时，我意识到了自己的错误。我已经订购了LOGO！12/24vdc，输入可配置为模拟。对不起，浪费了大家的时间！Doh！！！！！

Thanks for your post. I realisedthe error of my ways last week when i started looking into my problem. I have ordered a LOGO! 12/24vdc with inputs configurable as analogue. Sorry for wasting everyones time! Doh!!!!!

我会让你知道我的进展。

I will let you know how i get on.

谢谢

Thanks

肖恩

Sean

推荐答案9

关于光耦，是的，我提到了电压的不同峰值。

About the opto-coupler, yes I mentioned different peaks in the voltage.

我认为这与徽标的输入阻抗有更多关系。

I think this has more to do with the input impedance of the logo.

因为首先，徽标的输入保持打开，而不是闪烁。（12/24上高速输入的输入阻抗与24AC/DC版本上的正常输入截然不同）

Because first the input of the logo kept on, instead of blinking. (The input impedance of the highspeed inputs on the 12/24 are quite different than the normal inputs on the 24AC/DC version)

在这种情况下，我使用相同的电源（固态继电器或晶体管也可以做到这一点，但这一款很容易上市；）

I use the same powersupply in this case (A solidstate relais or a transistor could also do the trick, but had this one easily on stock ;)

我检查了一下8030，如果你使用的是3线版本，我想你的问题会少一些。然后我用我的2线GF传感器。

I checked for a moment on the 8030, if youre using the 3 wire version, I suppose you'll have less problems. Then me with my 2 wire GF sensor.