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我需要来自输出范围为1-5VDC的传感器的数据记录压力。
这些换能器中的一些是0-250PSI,一些是0-500PSI。 我以为我理解缩放,但我没有得到正确的值。 有人可以用简单明了的术语向我解释(我不是这方面的专家)我需要在Benchlink的Gain和Offset字段输入什么才能获得正确的缩放比例? 提前致谢。 以上来自于谷歌翻译 以下为原文 I need to data log pressures from transducers that have an output range of 1-5VDC. Some of these transducers are 0-250PSI and some are 0-500PSI. I thought I understood scaling, but I'm not getting the correct values. Can someone explain to me in simple, clear terms (I'm not an expert at this stuff) what I need to input on the Gain and Offset fields in Benchlink to get the correct scaling for these? Thanks in advance. |
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8个回答
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要从0-5V传感器获得0-250读数,您的比例因子为250/5或x50。
对于5V传感器的500读数,比例因子为500/5或x100。 在缩放之后添加公式Mx + B中的偏移值(B)。 要减去B值,请输入负值。 您的“单位”可能受到GUI的限制,因此可能需要在记录的值跟踪的名称中提及这些单位。 RL 以上来自于谷歌翻译 以下为原文 To get a 0-250 readout from a 0-5V transducer, your scaling factor is 250/5 or x50. For a 500 readout from a 5V transducer the scaling factor is 500/5 or x100. Offset values (B) in the formula Mx + B are added after scaling. To subtract a B value, enter a negative value. Your 'units' may be restricted by the GUI, so these might need to be mentioned in the name of the recorded track of values. RL |
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elvissoso 发表于 2019-1-24 07:22 这些是我投入的收益,数字甚至都不是很接近。 那么输出是1-5v而不是0-5伏呢? 说实话,我根本不理解你的最后一句话,但感谢你的答复。 编辑 - 我上面所说的是我收到的关于这个主题的第一个回复。编辑:bravenrace于2014年1月14日下午2:32 以上来自于谷歌翻译 以下为原文 Those are the gains I put in and the numbers aren't even close. What about the fact that the output is 1-5v, not 0-5 volts? To be honest, I didn't understand your last sentence at all, but thanks for the reply. Edit - What I said above relates the first reply I received on this subject. Edited by: bravenrace on Jan 14, 2014 2:32 PM |
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对于1to5V换能器,跨度为5-1 = 4V。 乘数(M)变为250psi / 4V,或62.5,如后续海报所述。 偏移是一伏,但是必须进行类似的缩放,因为它在以Mx + B形式缩放后进入等式。 它变为62.5x +( - 62.5)。 以上来自于谷歌翻译 以下为原文 For a 1to5V transducer, the span is 5-1=4V. The multiplier (M) becomes 250psi/4V, or 62.5, as your subsequent poster noted. The offset is one volt, but this has to be similarly scaled, because it enters the equation after scaling in the Mx+B form. It becomes 62.5x + (-62.5). |
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Ypsi = m *电压+ b 0 = m * 1 + b,250 = m * 5-b加上这两个方程得到250 = 6 m >> m = 62.5 psi / V.
将其代入第一个等式给出b = -62.5psi。 检查:0 psi = 62.5 psi / V * 1 - 62.5 psi>检查250 psi = 62.5 psi / V * 5 - 62.5> 312.5 - 62.5 = 250>检查 以上来自于谷歌翻译 以下为原文 Ypsi = m * voltage + b 0 = m * 1 + b, 250 = m * 5 - b Adding these two equations gives 250 = 6 m >> m = 62.5 psi/V. Substituting this into the first equation gives b = - 62.5 psi. Checking: 0 psi = 62.5 psi/V * 1 - 62.5 psi > check 250 psi = 62.5 psi/V * 5 - 62.5 > 312.5 - 62.5 = 250 > check |
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lanziji 发表于 2019-1-24 07:47 汤姆,在你的等式中,Y和V代表什么? 我本可以自己解决这个问题,但在benchlink信息中我找不到“范围”,“增益”和“偏移”的定义。 我想我明白他们的意思,但仍然无法得到好的数字。 我觉得搞砸的是电压输出范围低端的“1”。 我总是使用低端输出“0”的输出。编辑:bravenrace于2014年1月14日下午2:37 以上来自于谷歌翻译 以下为原文 Tom, In your equations, what do the Y and V represent? I could probably figure this out myself, but nowhere can I find a definition of "range", "gain" and "offset" in the benchlink information. I think I understand what they mean, but still cannot get good numbers. I think what's messing me up is the "1" at the low end of the voltage output range. I've always worked with outputs that had a "0" at the low end. Edited by: bravenrace on Jan 14, 2014 2:37 PM |
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好的,我跟着250psi传感器的偏移是62.5x-62.5,但不确定如何将其输入到程序设置字段中?
“x”是测量值,对吗? 如果是这样,那么它可以是1到5伏之间的任何值,那么我应该在偏移场中放入什么? 编辑:bravenrace于2014年1月17日上午8:54编辑:bravenrace于2014年1月17日上午8:56 以上来自于谷歌翻译 以下为原文 Okay, I follow that offset for the 250psi transducer is 62.5x-62.5, but am unsure of how to input that into the program setup field? "x" is the measurement, correct? If so, then it can be anything between 1 and 5 volts, so what should I put in the offset field? Edited by: bravenrace on Jan 17, 2014 8:54 AM Edited by: bravenrace on Jan 17, 2014 8:56 AM |
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我的理解是正确的,对于250psi传感器,我的范围应设置为62.5,对于500psi传感器,它应设置为125?
如果是这样,我唯一的问题是偏移量。 我之前用0-5v组件完成了这个,它只是1-5伏特的比例,我觉得让我感到困惑。 以上来自于谷歌翻译 以下为原文 Is my understanding correct that for the 250psi transducers my Range should be set at 62.5 and for the 500psi transducers it should be set at 125? If so, my only problem is with the offset. I've done this before with 0-5v components, its just the 1-5 volt scale that I think is confusing me. |
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对于250psi传感器,偏移量为-62.5psi,对于500psi传感器,偏移量为-125psi。
benchlink数据记录器GUI接受增益(M)和偏移(B)输入。 增益将分别为62.5和125。 我不确定psi单位是否作为选项RL提供 以上来自于谷歌翻译 以下为原文 For the 250psi transducer, the offset will be -62.5psi, and for the 500psi transducer it will be -125psi. The benchlink data logger GUI accepts a Gain(M) and an Offset(B) input. The Gain will be 62.5 and 125 respectively. I'm not sure whether psi units are offered as an option RL |
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