Table of Contents
ADIS16223 EVALUATION ON THE ADISUSB
The ADIS16223 iSensor® is a tri-axial, digital vibration sensor system that combines industry-leading iMEMS® sensing technology with signal processing, data capture, and a convenient serial peripheral interface (SPI). The SPI and data buffer structure provide convenient access to wide bandwidth sensor data. The 22 kHz sensor resonance and 72.9 kSPS sample rate provide a frequency response that is suitable for machine-health applications. The programmable digital filter offers low-pass and band-pass configuration options. The electrical connection typically only requires 5 I/O lines for synchronous data collection, as shown in the following figure:
ADIS16223/PCB BREAKOUT BOARD
For those who are on a tight timeline, connecting the ADIS16223 to an embedded controller will provide the most flexibility in developing application firmware and will more closely reflect the final system design. The ADIS16223/PCBZ is the breakout board for the ADIS16223 and may provide assistance in the process of hooking it up to an existing embedded processor system.
ADISUSB: PC EVALUATION
For those who would prefer to perform PC-based evaluation of the ADIS16223, before developing their own embedded system, the ADISUSB is the appropriate system to use. The remainder of this Wiki site will focus on PC-based evaluation with the ADISUSB system.
Windows XP, Vista, 7 (32-bit systems only)
NOTE: All the required files are contained in the .Cab file and deployed during software package install.
The ADIS16223 is available in a 15 mm × 15 mm × 15 mm module with a threaded hole for stud mounting with a 10-32 UNF screw. The dual-row, 1 mm, 14-pin, flexible connector enables simple user interface and installation. The ADIS16223/PCBZ provides the ADIS16223CMLZ on a small printed circuit board (PCB) that simplifies the connection to an existing processor system. A single 10-32 machine screw secures the ADIS16223CMLZ to the interface board. The first set of mounting holes on the interface boards are in the four corners of the PCB and provide clearance for 4-40 machine screws. The second set of mounting holes provides a pattern that matches the ADISUSB evaluation system, using M2 × 0.4 mm machine screws. These boards are made of IS410 material and are 0.063 inches thick. The J1 connector uses Pin 1 through Pin 12 in this pattern. Pin 13 and Pin 14 are for future expansion, but they also provide convenient probe points for the DIO1 and DIO2 signals. The connector is a dual row, 2 mm (pitch) connector that work with a number of ribbon cable systems, including 3M Part Number 152212-0100-GB (ribbon-crimp connector) and 3M Part Number 3625/12 (ribbon cable). The LEDs (D1 and D2) provide visual indication on the DIO1 and DIO2 signals. The pads accommodate Chicago Miniature Lighting Part No. CMD28-21VRC/TR8/T1, which works well when resistors R1 and R2 are approximately 400 Ω (0603 pad sizes). The schematic is for the ADIS16223/PCBZ board.
Do not plug the ADISUSB into the USB cable at this stage of the setup. Wait until the software installation is complete.
The single 10-32 machine screw from the ADIS16223/PCBZ kit will secure the ADIS16223CMLZ part on the ADIS16223/PCBZ. Once the ADIS16223CMLZ part is secured plug the flexible connector into the U1 connector on the ADIS16223/PCBZ. The following pictures provide a visual reference for correct connection.
Mounting to the system frame is accomplished using 6 M2x.4x6mm machine screws included with the ADIS16223/PCBZ. The mounting location holes are marked as an example in the picture below. Use the 6 holes to secure the ADIS16223/PCBZ to the ADISUSB. The 12 pin cable included with the ADISUSB will plug into the J1 connector on the ADIS16223/PCBZ board.
NOTE: If JP1 is left on +5v the software will look like the following picture. Move JP1 to the+3.3V setting to correct the problem.
Click here to download the ADIS16220 Evaluation Software to a personal computer, which enables PC-based evaluation of the ADIS16223 on an ADISUSB evaluation system. The download file will contain three separate files: The CAB file (ADIS16220_EVAL_Rev_5.cab), the setup file (setup.exe) and the setup list. Copy these files to a convenient folder for running the application from.
Navigate to the folder where the files were saved and double click the setup.exe file. The following pictures are a guide for the ADIS16223 software install. The Welcome screen will appear click OK to continue.
Please choose a directory for the software application or use the default settings (recommended) and click the computer icon button to go to the next step.
Choose a program group or use the default settings (recommended) and click Continue. The last picture confirms completion click OK to finish.
USB Driver Installation
The ADIS16220_EVAL_Rev_5.cab file contains USB drivers that are compatible with both 32-bit and 64-bit Windows systems. The drivers are unpacked the same time the software application is loaded by double clicking the setup.exe file. The first time the ADISUSB board is plugged into the computer (using the included USB mini cable) the hardware is recognized and loaded. The computer Hardware Wizard will find and install the drivers by following the steps below.
The following pictures show the final steps for USB driver install. Click on Next then click on Finish completing the installation.
ADIS16223 Evaluation SOFTWARE
After the USB driver installation is complete, connect the ADISUSB USB connector to the PC, using the USB Mini cable, from the ADISUSB kit. D2 will illuminate as soon as this connection is made. This indicates that the ADISUSB has power and is going through its start-up/initialization process. During the initialization process, several messages may appear on the screen. They are related to updating the ADISUSB firmware and establishing communication between the PC and the ADISUSB. After the updates are finished double click on the ADiS16220_Eval_Rev_5.exe file to launch the software application.
Once the ADIS16220 Software starts-up, the Main Window will appear and look like the following picture. The second picture provides color-coded boxes to support further discussion of each function in this screen.
The orange box identifies the drop-down menus, which provide a number of useful features. The Product option provides a list of products for ADIS16223 Evaluation, click on Product and then select ADIS16223. The green box shows the current device selection, which in this case, identifies the ADIS16223 as the current selection.
The Registers option provides a listing of user-configurable registers in the ADIS16223 and also provides read/write access to each one of these registers.
The Datalog option provides the core data collection function.
The purple box identifies the output registers, which update, after pressing the Read button.
The red box identifies the Trigger button for different capture modes.
The yellow box identifies the waveform recorder window. The window contains the three accelerometer responses. Also, each waveform matches the color of its register.
The purpose of the Register Access window is to provide both read and write access to the user registers in the ADIS16223. The following picture shows the appearance of this window.
The color coded boxes illustrate the different functions that this window provides.
The purple box identifies the register category. In addition to the Control/Status, this drop-down control offers access to Output and Calibration registers.
The red box identifies all of the registers that are in the current category. Click on the register name to select a register for individual read/write access.
The green box identifies the read/write control options for the current register selection. Use the hexadecimal format when writing commands to a particular register.
The yellow box updates all the registers in the current category.
The Update Flash command saves writable user register data.
APPLICATION TIP: The Register Access screen writes to user control registers, inside of the ADIS16223, two bytes at a time. So, when configuring a register, make sure to include the hexadecimal number for all 16-bits, before pressing the Write Register button. When using an embedded processor to write to user control registers, inside of the ADIS16223, each command (16-bits) writes to one byte at a time.
Data Capture Menu
The Data Capture function supports synchronous data acquisition, based on the data-ready signal from the ADIS16223. The following picture represents the Data Capture window, right after opening it from the Main Window and the second picture provides color-coded boxes, in order to support further discussion of each function that is associated with this screen.
The Main screen datalog option should be checked to enable the datalog function.
The green box identifies the configuration box for the name and location of the data storage file.
The yellow box identifies a number of configuration options for the data acquisition process. The Scaled Units option causes the software to convert the decimal, twos complement number into its representative value. For example, when enabling Use Scaled Data, the accelerometer outputs will be in units of g's g-force.
Demonstrating the Averaging/Decimation Function
Screen shots of the 16220_Eval_Rev_5 software running an ADIS16223 device. In each graphic the value of the AVG_CNT increases from 1 to 1024. Notice that the Capture Duration also increases from 0.23 seconds to 16.90 seconds. Plots show that the data noise is reduced as the AVG_CNT is increased. This gives the customer greater flexibility for their specific application.
When the ADIS16223 Capture Mode is set to Periodic then the CAP_PRD must be set by the user to a value greater than the Capture Duration.