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Author Topic: DATA Acquisition Units  (Read 9800 times)

m.alizadeh91

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DATA Acquisition Units
« on: July 22, 2011, 09:15:42 am »
Hello Mr.Jan
Are the all of DATA Acquisition Units, HID devices?
Is Hid.dll and kernel32.dll enough to connect and communicate with this device?

thanks
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Jan Axelson

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Re: DATA Acquisition Units
« Reply #1 on: July 22, 2011, 10:53:35 am »
No, a data acquisition might use HID, Test and Measurement, mass storage, or a vendor-defined driver to name a few. For existing devices, look in Windows Device Manager to find the driver.

Jan
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m.alizadeh91

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Re: DATA Acquisition Units
« Reply #2 on: July 22, 2011, 12:16:10 pm »
Actually we haven't close access to device!!! we want to buy a device but before that we need to know what driver it uses!! device is a Data Acquisition system which works with  PIC microprocessor and send data via usb with a 500ms interval. consist of 40 sensors.
Do you think it's could be anything except HID?

Any Suggestions????
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Jan Axelson

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Re: DATA Acquisition Units
« Reply #3 on: July 22, 2011, 02:25:37 pm »
The HID class gives you guaranteed max latency with interrupt transfers, which is good.

Many of the commercial USB data acq boards use vendor-provided drivers and thus would be harder to program, assuming you're using the PIC as a USB host. But the development boards listed here include some that use HID:

http://www.lvr.com/usb_device_hardware.htm

Jan
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Guido Koerber

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Re: DATA Acquisition Units
« Reply #4 on: July 22, 2011, 06:43:05 pm »
alizadeh: Not sure what you are talking about. Do you refer to a specific device? Do you ask a generic question about data acquisition? Or do you seek advice about what device to buy for a certain application?
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m.alizadeh91

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Re: DATA Acquisition Units
« Reply #5 on: July 23, 2011, 01:17:18 am »
Mr Koerber: Yes... i'm refer to specific device. the device is "Mud Logging unit". consists of a Data acquisition unit with a PC which receive data. DRALAM company produce it's PICs. We want to buy the device and before that we need to know what kinda driver it uses. The company is in another country (France) and I've mailed to them but they didn't answer me yet.
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Guido Koerber

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Re: DATA Acquisition Units
« Reply #6 on: July 23, 2011, 07:09:48 pm »
This seems to be a very special unit, so it is very unlikely that anyone here is familiar with this device. The information which controller chip is used is worthless since it can be programmed to do anything within its physical limits. Your only source for this information will be the manufacturer.

If you have anyone around who speaks French, have him/her send the question, that usually helps.
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