Machine using LabView trigger signal

The company I work for has just acquired a new machine which measure the size of the particles and other variables. The machine is supplied with its own program that records and analyzes the data. However, we want to get around that and read the data directly in LabView and so be able to filter, organize, and sort as desired.

Attached are pictures of the configuration of the machine. The red circle indicates the cable that connects the PC to the machine.

While the machine will operate its own, there will be no signals transmitted to the PC without a trigger command. It's my first question: how to provide the appropriate command of LabView machine so he can generate the right signals.

The manufacturer of the machine:

The colloidal Dynamics AcoustoSizer (AZRII) consists of a central processing Signal (EPSC) and unit of different sensors, shown in figure 2.1. They are controlled by the application owner software that is running on a classical computer in MS Windows^TM based (PC).

Under the direction of the application, the EPSC generates pulses of sinusoidal voltage on a sequence of prescribed frequencies between 1 to 20 MHz. These pulses are applied to the sound Amplitude Electrokinetic and mitigation sensor (ESA), where they generate ultrasonic signals in the colloid.

These signals of ultrasounic, which contain information about the size of the particles and the load, is converted to voltage pulses by mitigation ESA probe sensors, and impulses are then directed to the EPSC for the signal processing. The processed signals are transmitted to the computer, as well as data from the pH, temperature and conductivity sensors. At the end of the measurement phase, the data are analyzed in the PC to determine the particle size and zeta potential.

Information on the measurement process:

A typical measurement sequence is as follows:

The PC issues instructions for the EPSC applied pulses of high voltage excitation frequencies prescribed the probe to ESA/mitigation. This is according to two modes, the ESA, and mitigation.

The extent of the ESA, this voltage pulse is applied between two flat and parallel electrodes that are in contact with the suspension. The suspension runs vertically upward between the electrodes with a brace polyphenylenesulphide (PPS), the ESA probe. One of the electrodes is adsorbed on an acoustic delay line, opposite which is mounted a ultrasonic transducer thin. The applied voltage pulse causes the colloidal particles (which are almost always electrically) to shake back and forth. This query generates sound waves, a phenomenon called the Amplitude sound Electrokinetic, or the effect of the ESA. The sound waves of the ESA spending since the suspension along the glass delay line. When they reach the end of the delay line, the soundwaves created tension through the transducer. The voltage pulse then crosses the EPSC signal processing circuit. The Fourier transform of the pulse is determined by the EPSC and then transmitted to the computer. This Fourier transform is a complex number with the two amagnitude and phase (or argument).

At present, we are measuring to thirteen different frequencies, at the end of the sequence of ESA measure we have so thirteen amplitudes of ESA and thirteen phases stored in the PC. This set of quantities is called the spectrum of ESA.

The extent of the sound attenuation of the output pulse EPSC is applied to a piezoelectric transducer. This generates a pulse of sound wave which passes through suspension. This impulse and various reflections that come further in time are all measured, stored and analysed using the Fourier Transforms as in ESA measures.

At the moment, that we measure to 13 different frequencies, at the end of the sequence of mitigation so we have amplitudes of mitigation thirteen and thirteen phases stored in the PC. This set of quantities is called the spectrum of mitigation.

Any help would be greatly appreciated!

Kalyie wrote:

Attached are pictures of the configuration of the machine. The red circle indicates the cable that connects the PC to the machine.

Well, which depends on the Protocol of the machine. Do you have the link susanianak provided that help any? You will need to check the documentation mfg on the appropriate command to send to start the cycle. This can be done easily with LV, but it needs to work with the Protocol set by the seller. Your photo shows what appears to be a serial cable. Use the VISA for this.

I didn't see a second question. Are you asking how to acquire information from the machine? If you can find a driver for this hardware, as suggested SusanianaK, which would be preferable. You can build your own. Since it's RS - 232, it sends the information in a serial data stream. Refer to the doc for the equipment to see what are the parameters of the series. If all goes well, your controller can work as a host and got the info as it comes. But there may be a set of commands supported to extract it.

Tags: NI Software

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