This system provides a simple way to demonstrate the concept of a remote vibration monitoring system, using the ADIS16000 and ADIS16229. All of the necessary components fasten to a fluorescent yellow plate and the system requires two USB ports on a PC to support full operation. One of the USB cables manages communication with the Gateway node (ADIS16000) and the other supplies power to the vibration source. The vibration source is a simple, off-balance motor that comes in a black plastic case. The potentiometer provides a gross tuning method for controlling the amount of vibration on the platform.
The ADIS16229AMLZ runs off of a +3.6Vdc, 1/2 AA, Lithium Ion battery. The one shown in this picture is manufactured by Saft (P/N: LS14250) and is available through many different online sources. Just Google-search “Saft LS-14250” to produce a list of sellers. The other parts for the battery assembly are: The battery holder 1/2AA cell Memory Protection Devices (P/N: BH1/2AA-3), Connector housing TE Connectivity (P/N: 1375820-2) and Connector Pins TE Connectivity (P/N: 1445336-3). The wire should be 22 AWG to 28 AWG and soldered to the battery holder posts.
This kit supports a very simple setup process.
Start by installing the longer antenna on the ADIS16000AMLZ's SMA connector. This particular antenna has an elbow joint, which is flexible but tightens with the SMA connection. Make sure that its final orientation support supports full upright antenna positioning, once the antenna is secure. The following illustration provides the start, interim and final views of this installation process.
Install the shorter antenna onto the ADIS16229AMLZ's SMA connector. See the following pictures for the start, interim and complete states of this process.
Find the two holes on the side of the plate, located next to the black plastic motor case. Use (2) M2x0.4×12 machines screws (at least 8mm long) to secure this assembly to the plate. NOTE: The threads can strip, only tighten to “finger-snug.”
Install the battery, with the positive terminal on the side that has the red wire, as shown in the following pictures:
Verify that JP1 on the EVAL-ADIS is set to +3.3V, then connect it to the PC, using one of the Mini USB cables in the kit. LED2 will illuminate immediately and LED1 will take up to 10 seconds to illuminate. *LED2 indicates that the EVAL-ADIS now has power and LED1 indicates that the EVAL-ADIS is communicating with the PC.
Before connecting the motor to the PC, turn the potentiometer all of the way, counter-clockwise, to set the vibration to its lowest possible setting. Then, connect the motor to a PC, using one of the Mini USB cables for power. After connecting this to the PC, turn the potentiometer in the clockwise direction, until the vibration level is sufficient for the demonstration.
When ready to start testing, connect the ADIS16229AMLZ to the battery. Use the following pictures to guide the installation process.
This section will offer software tips for using this demonstration system. For a complete guide to the Vibration Evaluation Program, click on the following link: Vibration Evaluation Program Wiki Guide
After starting the software by double-clicking on the software's executable file, a number of things will take place. These items may appear to happen in alternate orders, but first, the USB connection window will appear and another Window will appear, with a message of updating the EVAL-ADIS firmware.
This will be followed by an attempt to connect with the sensor, which will take approximately 5 seconds, then a “success” message, if the connection was completed and verified:
Click on OK and the Main Menu will appear.
Typical Error Messages and Solutions:
The application would fail to start in the event of no USB connection to the Evaluation board. When the user sees the following error message, Ensure that ADIS16000 is connected to the Eval Board.
When the user sees the following error message, Ensure that ADIS16000 is selected in Devices drop-down menu.
User is notified of an unsuccessful addition of a sensor node to the network as shown below.
Unsuccessful addition of the sensor node can occur under the following circumstances..
Case 1: A new sensor node had not been powered on during the initial start of the application. If this is the case, User can turn on the sensor and follow connecting nodes section for adding the new sensor.
Case 2: ADIS16000 had been reset and the sensor node is already part of the network with a sensor identifier flashed in it. As a result, the sensor node does not respond to the command for adding a new sensor to Gateway. In order to check this case, follow the instructions for scanning the network in the Network Control section to update the ADIS16000 (Gateway) with already existing nodes.
Case 3: ADIS16000 or ADIS16229 is in an unknown state. Power cycle both the parts and restart the application.
A user can add more sensors to the network by clicking on Network menu to invoke the Network control window followed by a 3 step process. The new sensors that need to be added to the network needs to be powered on one at a time during this process.
Step 1: Turn on one new sensor node that needs to be added to the network. Sensors already in the network can remain powered on.
Step 2: Click on the desired new sensor # in the network control window which is not active (not already assigned).
Step 3: Click on Add Sensor button to add the new sensor.
After a wait time of 5 seconds, the sensor should be successfully added to the network. Now the user could move on to the addition of the next new node if needed.
When the sensor nodes are already connected to the network and Gateway Node is reset using Software reset or a Power cycle, the sensor nodes can be retrieved by using the following steps.
Step 1: Click on the Network menu to invoke the Network control Window Step 2: Click on Scan Network button.
The Gateway node checks for every node in the network ( Node 1 through 6) and updates its sensor map at the end of it.
Click on the Demo option in the Menu bar to reveal two different options: Network Manual FFT and Network Periodic FFT.
The Network Manual FFT option causes the ADIS16229 to run a continuous loop of data capture, analysis, and communication of the FFT results to the FFT Display Window in the Vibration Analysis Software. This is the simplest mode to run a demonstration in but it will only support ~14-16 hours of battery life. The following screen shows the FFT, with a relatively low noise floor.
Once this mode is in operation, you can hit the Stop button to stop it or you can hit the Esc key. This function is still being tested and improved. At the present time, using the Esc seems to be more robust.
After starting this mode, start turning the potentiometer on the motor, until it starts to respond. After it starts vibrating, turn it down as low as possible, without completing stopping the vibration. When the motor is on, it typically generates enough sound to hear.
While tweaking the motor up, notice the change in the FFT result, on the y-axis in particular.
To change the scale on the plot, hover the mouse pointer over the results area and Right Click to reveal the scale adjustment window.
Click on the > button in this window to increase the range on the scale.
Click on Close to close the scale adjustment box.
If the motor vibration is high enough, the plate could start moving around on its surface. Notice the change in the FFT profile: the magnitude increases, but at the lower frequencies.
Going back to the Main Window and the Demo option, the Network Periodic FFT mode will cause the ADIS16229 to wake-up every 10 seconds, collect data, analyze the data, transmit the results to the PC (through the ADIS16000, ADIS16COM1/PCBZ and the EVAL-ADIS) and then go back to sleep again. When using this mode, the LED on the ADIS16229 will blink when it is on (approximately one time every 10 seconds). Also, note that the System Development Platform Wait window will appear during the “Sleep time” for the ADIDS16229.
When using this mode, use the Esc key to break this process.
Let's start with a simple example, where we will set a single alarm band to monitor in this demo system. The following figure establishes the start frequency, stop frequency on one of the levels (Alarm 1), which serves as the “warning” level.
After establishing the start frequency, stop frequency and alarm threshold levels, click on the Alarm menu option and then, select the Alarm Settings option. The following graphic highlights the entries that will realize the settings from the first step in this process.
Start by updating the boxes with the entries in the graphic below. Note that the “262” simply sets Alarm 2 at a level that is 2x greater than Alarm 1. After the entries are complete, click on Write to DUT and wait for the Yellow update box to disappear (this will happen quickly). After this, close window and return to the Main Menu.
Go into the Register Access Menu and scroll down to the ALM_CTRL, located at addess 0x30, as shown in the screen. Select the register.
Enter “2” into the User Entry Box, as shown below.
Click on Write as shown in the graphic below.
Scroll up to find the GLOB_CMD_G register, located at address 0x12, as shown in the graphic below.
Select this register with the mouse and then enter 2 into the User Entry box.
Click on Write, as shown in the graphic below.
Go back to the Main Menu and click on the Alarm option, then click on the Alarm Status Form. This will reveal a blank status form.
Click on Start and notice the FFT results. Reveal the Alarm Status Form and determine if the vibration exceeds an alarm level.
Experiment with increasing the vibration and try again.
Click on Update Registers in Category. The following graphic shows the results that come from the ALM_Y_STAT, ALM_Y_PEAK and ALM_Y_FREQ registers.