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AN-000349

 

 

Document Number: AN-000349

 

Page 10 of 23

 

Revision: 1.0 

 

3

 

GUI OVERVIEW 

 

Figure 8. Example GUI display output. 

3.1

 

GUI FIELDS 

 

 

Device

:  This  field  selects  the  COM  port  for  the  board  and  connects/disconnects  the  board  with 

Connect/Disconnect

 button. Device algorithm settings can also be modified by clicking the 

 button. 

See Section 3.2 for a detailed explanation of device settings. 

 

Record

: Input and output data can be saved in 3 separate files using the “Record” checkbox. 

 

o

 

The algorithm input data will be saved in the specified directory in a timestamped text file. A json 
file with the same root name is created and contains information about the sensor configuration. 

o

 

The algorithm 

output data will be saved in the subfolder “

algo/cliff_detection_emd

” in csv format. 

 

o

 

For cliff detect data, the data format is:  

timestamp | algorithm type | tx sensor id | rx sensor id | detection result | cliff_index | cliff depth 
estimate

 

o

 

For floor type data, the data format is: 

timestamp | algorithm type | tx sensor id | rx sensor id | floor type metric | decision threshold | floor 
type result | start mag derivative(for debug)

 

 

Widgets

: Click the “ASCAN” button to open the A

-scan (amplitude scan) widget. Highest amplitudes are 

bright yellow, while lowest amplitudes are dark violet. This color scale is relative to the amplitude ranges 
being currently shown on the A-scan, and does not represent the absolute amplitude values. 

 

Cliff Detection

: Output from the cliff detect algorithm on the current cliff status (“Cliff” or “Floor”) 

 

Содержание CH101

Страница 1: ...mation herein without notice Chirp Microsystems 2560 Ninth Street Ste 200 Berkeley CA 94710 U S A 1 510 640 8155 www chirpmicro com Document Number AN 000349 Revision 1 0 Release Date 02 16 2022 Appli...

Страница 2: ...OF REQUIRED HARDWARE 5 2 2 ACOUSTIC INTERFACE 5 2 3 MECHANICAL AND MODULE SETUP 6 2 4 SMARTSONIC AND DAUGHTERBOARD 7 2 4 1 Smartsonic Connections to Run the Cliff and Floor Detect Demo Software 7 2 5...

Страница 3: ...ument as it is optimized for the default settings in the software algorithms Custom acoustic designs will require experimentation from the user and are outside the scope of this document 1 2 THEORY OF...

Страница 4: ...cliff and floor type detection in your device Overview of the CH101 ultrasonic ToF sensor product o Link invensense tdk com products ch101 o Includes Application Note documentation and product specif...

Страница 5: ...sor cliff detection reference design utilizes a carefully designed Acoustic Interface to achieve optimal performance Dimensions tolerances and assembly requirements for the Acoustic Interface are prov...

Страница 6: ...UP The floor type and cliff detection algorithm are tuned and expect the sensor to be placed and orientated in a specific position for optimal performance The recommended design places the bottom on t...

Страница 7: ...CH101 sensor module Repeat this for the Sensor 1 connector and the second CH101 sensor module The blue LED next to each connector will light up if connected correctly see Figure 6 If an LED does not l...

Страница 8: ...AN 000349 Document Number AN 000349 Page 8 of 23 Revision 1 0 Figure 6 Example of SmartSonic module connection Note cable orientation may differ depending on your particular cable s construction...

Страница 9: ...nt you need to reflash the firmware or flash a different firmware the steps to do this are 1 Power off the board by unplugging the micro USB cable 2 Move the power selection jumper to bridge the EDBG...

Страница 10: ...out the sensor configuration o The algorithm output data will be saved in the subfolder algo cliff_detection_emd in csv format o For cliff detect data the data format is timestamp algorithm type tx se...

Страница 11: ...of the received signal Cliff Depth Estimate Shows the cliff depth estimate over time To obtain the cliff depth the sensor height needs to be subtracted when the sensor is above the floor Floor Type M...

Страница 12: ...directly down at the floor is 0 degrees Default value is 15 degrees Range of permitted values is 0 45 For best algorithm performance all physical input measurements should be accurate to 1 mm or 1 deg...

Страница 13: ...orithm s calculated metric for the amplitude of the floor s return echo over time If the RVC is transitioning between hard and soft floors the metric s displayed value will correspondingly change alon...

Страница 14: ...ble to see the signal with ODR set to 10ms Cliff or floor performance is not good Verify the physical dimensions of the mechanical device settings The parameters need to be accurate by 1mm or 1 degree...

Страница 15: ...AN 000349 Document Number AN 000349 Page 15 of 23 Revision 1 0 5 APPENDIX 5 1...

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Страница 23: ...n the infringement of patents copyrights mask work and or other intellectual property rights Certain intellectual property owned by Chirp Microsystems and described in this document is patent protecte...

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