blocks|key|1429386|text|测试VI逻辑的最快方法是制作一个包含示例数据的CSV文件，并将从传感器读取数据的部分临时替换为以相同速率从CSV文件读取数据值的部分。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1429387|在较低的层次上模拟串口输入可能是不值得的，因为Labview通常非常可靠地将数据从硬件获取到VI中-这取决于您如何处理它！|1429388|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

The quickest way to test your VI's logic would be to make a CSV file of example data, and temporarily replace the section that reads from the sensor with a section that reads data values from the CSV file at the same rate.

It's probably not worth trying to emulate the serial port input at a lower level as Labview is generally very reliable at getting data from hardware into your VI - it's up to you then what you do with it!

blocks|key|753622|text|您可以让另一个程序模拟传感器，并将其写入不同的COM端口。然后，您可以使用零调制解调器电缆连接这些COM端口。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|753623|为了做到这一点，你必须弄清楚你的传感器是如何工作的，并将na适当格式的数据输入到第二个COM端口。这些数据最终将被第一个COM端口接收，并最终被您要开发的应用程序接收。|753624|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

You could have another program simulate the sensor and write to a different COM port. Then you could connect these COM ports with a null modem cable.

In order to do so, you'll have to work out how your sensor works and feed data in na appropriate format into that 2nd COM port. These data will end up being received by the 1st COM port and eventually by your application-to-be-developed.

blocks|key|2392245|text|如果您将所有通信代码封装在一个或一组子in中，与执行转换和显示部分的代码分开，则可以轻松地用测试代码和测试数据替换实际的传感器数据。您可以编写生成测试数据的subVI，并在以后将其替换为真实的传感器通信subVI，或者您可以使用subVI中的case结构，在与真实传感器通信和仅输出测试数据之间进行选择(正如Moray建议的那样，您可以从文件中读取测试数据，以便轻松地进行更改)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2392246|我建议您编写单独的子VISA，用于打开与传感器的通信，从传感器获取数据点，并在完成后关闭通信端口(尽管您可能只需使用串行或VISA关闭函数)。使用通信端口(又称VISA会话)和错误线将这些VIs链接在一起。开放的VI可以接受指定是否要使用真实/模拟数据的输入，并将该选择存储在全局变量(或函数全局VI)中，每次调用该全局变量(或函数全局VI+)时，获取数据VI都会对其进行检查。|2392247|glglgl提出的从另一个串行端口发送模拟数据的建议也很好；在这里，您需要做的就是在某种循环中使用串行发送和接收函数，在接收命令和发回输出方面，执行与实际传感器相同的操作。这样做的好处是，您不需要对主程序进行任何更改，无论是连接到真实的传感器还是模拟程序，主程序的工作方式都应该完全相同。然而，现实世界中串行通信的问题通常是由于仪器或设备没有完全按照其规范所声称的那样工作，因此，仅仅因为您的程序与您的模拟完美地工作并不能保证它将与真实的传感器完美地工作，如果真实的传感器做了您没有预料到的事情:-)|2392248|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

If you encapsulate all of your communications code in a subVI or set of subVI's, separate from the code that does the transformation and display part, you can easily substitute test code and test data for the real sensor data. You could write a subVI that generates the test data and replace it with the real sensor comms subVI later, or you could use a case structure in the subVI to choose between communicating with the real sensor and just outputting test data (which, as Moray suggests, you could read in from a file so that you can easily change it).

I would suggest that you write separate subVIs for opening communications to the sensor, getting a data point from it, and closing the comms port when you are finished (though you can probably just use the serial or VISA close function for that). Chain these VIs together using the comms port (aka VISA session) and error wires. The 'open' VI could take an input that specifies whether real/simulated data is to be used and store that choice in a global variable (or a functional global VI) which the 'get data' VI checks each time it is called.

glglgl's suggestion of sending the simulated data from another serial port is also good; all you need to do here is use the serial send and receive functions in some sort of loop to do the same thing as the real sensor would, in terms of receiving commands and sending an output back. This has the advantage that you don't need to make any changes to your main program which should work exactly the same whether it's connected to the real sensor or the simulation program. However, problems with serial comms in the real world often result from instruments or devices that don't do exactly what their specifications claim they do, so just because your program works perfectly with your simulation doesn't guarantee it'll work perfectly with the real sensor if the real sensor does something you didn't expect :-)

blocks|key|2475921|text|虽然其他答案提供了一些非常好的想法，但我已经找到了一种更简单的方法来模拟传感器输入，这对初学者来说是方便的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2475922|2475923|使用虚拟端口模拟器在计算机上创建虚拟串行端口。http://www.eltima.com/products/vspdxp/|ordered-list-item|offset|length|2475924|Get一个Modbus模拟器。http://www.plcsimulator.org/|2475925|Download+Labview+Modbus库。http://zone.ni.com/devzone/cda/epd/p/id/4756|2475926|2475927|打开Labview+Modbus库并运行'MB+Serial+Master+Example.vi‘|2475928|现在应该可以使用示例程序将值读/写到模拟器中。|2475929|可以分析示例程序的框图，以了解数据在Modbus协议幕后是如何传输的。|2475930|entityMap|0|LINK|mutability|MUTABLE|url|http://www.eltima.com/products/vspdxp/|1|http://www.plcsimulator.org/|2|http://zone.ni.com/devzone/cda/epd/p/id/4756^0|0|0|N|12|0|0|F|S|1|0|P|18|2|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|15|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|16|8|@]|9|@$F|17|G|18|1|19]]|A|$]]|$1|H|3|I|5|E|7|1A|8|@]|9|@$F|1B|G|1C|1|1D]]|A|$]]|$1|J|3|K|5|E|7|1E|8|@]|9|@$F|1F|G|1G|1|1H]]|A|$]]|$1|L|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|1J|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|1K|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1L|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|1M|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|Z]]|10|$5|V|W|X|A|$Y|11]]|12|$5|V|W|X|A|$Y|13]]]]

Though the other answers offered some really great ideas, I've found an easier way to simulate sensor input that would be convenient for beginners.

<ol>
<li>Create virtual serial ports on your computer by using a Virtual port simulator. <a href="http://www.eltima.com/products/vspdxp/" rel="nofollow">http://www.eltima.com/products/vspdxp/</a></li>
<li>Get a Modbus simulator. <a href="http://www.plcsimulator.org/" rel="nofollow">http://www.plcsimulator.org/</a></li>
<li>Download Labview Modbus Library. <a href="http://zone.ni.com/devzone/cda/epd/p/id/4756" rel="nofollow">http://zone.ni.com/devzone/cda/epd/p/id/4756</a></li>
</ol>

Open the Labview Modbus library and run 'MB Serial Master Example.vi'

Now it should be possible to read/write values into the simulator using the example program.

The Block Diagram of example program can be analyzed to find out how data is being transferred behind the scenes on Modbus protocol.

I am trying to write a Labview program that takes input from a thermal sensor on serial port RS - 232, applies some basic transformation to it, and displays it on a screen.

I'm wondering if it is possible to somehow simulate the sensor in labview, or by using some external simulator application so I can test my program before I'm given access to the actual hardware.

Is this possible?

I have Labview 2011.

Simulating input in Labview

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在尝试编写一个Labview程序，该程序从串行端口RS - 232上的热传感器获取输入，对其进行一些基本转换，并将其显示在屏幕上。我想知道是否有可能以某种方式在labview中模拟传感器，或者使用一些外部模拟器应用程序，以便我可以在获得访问实际硬件的权限之前测试我的程序。这个是可能的吗？我有Labview 2011...

问在Labview中模拟输入
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