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IWR1642BOOST: Can this evaluation board using mmWave Sensor technology be used for accurately detecting occupancy states of multiple parking spots

sritam paltasingh
Intellectual 265 points
Part Number: IWR1642BOOST
Other Parts Discussed in Thread: IWR1843BOOST, IWR1843

Dear Sir,

I am working on enhancing an existing smart city project in which LoRaWAN sensors are used to detect occupancy state of parking slots as shown in the below figure. But the problem is that each sensor can only detect the occupancy state of a single parking spot. As you can see in the below figure there are around 20 sensors installed within a small area to send the occupancy status of 20 parking spots. And each sensor is around 200 euros. So, this is very expensive solution and is not scalable city wide in terms of price and manpower for installation. There are also traffic light posts in the area as seen in the figure.

My question is can I use the IWR1642BOOST evaluation board(EVM) to detect occupancy state of multiple parking spots (in this case all the 20 parking spots) by attaching the IWR1642BOOST EVM on top of the traffic light post and facing it downwards. If a single IWR1642BOOST  EVM can serve the purpose of what the presently installed 20 LoRaWAN sensors are doing then it will be a huge cost saving and can be scaled city wide. Also will IWR1642BOOST EVM work in the night with minimal lighting conditions with good accuracy?

Thanks and Regards,

Sritam Paltasingh.

  • 0
    TI__Mastermind 23570 points

    Hello Sritam,

    IWR16xx/IWR18xx devices can be used for Traffic Monitoring applications. This offering can be used to perform Parkingspot detection.

    Please check our application page and video on it to see the results of demo available for IWR18xx/IWR68xx demos. Our suggestion would be use one of these to try out demos.

    Traffic monitoring  - Application Page

    Demo Offering on TIrex

    Hardware Buy link : Preferred: IWR1843BOOST EVM 

    If you have to stick with IWR1642BOOSTEVM for some reason please let us know.

    Thank you,

    Vaibhav

  • 0 in reply to Vaibhav Mahimkar
    Intellectual 265 points

    Hi Vaibhav,

    I am reading the materials present in the links given by you.

    What is the difference between IWR16xx and IWR18xx  mmWave sensors?

    Why is  IWR1843BOOST EVM preferred than IWR1642BOOST EVM for parking spot detection ?

    Thanks and Regards,

    Sritam Paltasingh

  • Former Member
    0 Former Member in reply to sritam paltasingh

    Hello,

    Please refer to the table in the datasheet for comparison of the devices. At a high level, IWR18xx is a superset device with an additional transmitter enabling 3D detection. The 16xx device only has two transmitters and will only be able to locate points in 2D. 3D detection should give you more robust detection and the option for wider FoV with localization in 3D space depending on your antenna design.

    Furthermore, the 1642 labs have been deprecated and no new development or updates for the device platform will be coming.

    Amanda

  • 0 in reply to Former Member
    Intellectual 265 points

    Hi Amanda,

    Thank you for the valuable information. I am reading more about the functionality of IWR1843BOOST EVM. I will purchase the IWR1843BOOST EVM for prototyping purpose.

    Can the IWR1843BOOST EVM be also used for indoor parking spot occupancy detection as shown below in addition to outdoor parking spot detection? The IWR1843BOOST EVM will be mounted on the roof ceiling facing downwards.

    Thanks and Regards,

    Sritam Paltasingh.

  • 0 in reply to Former Member
    Intellectual 265 points

    Hi Amanda,

    There were some pilot projects carried out in Berlin by Siemens using Radar sensors. The issue that they faced was that when low density objects such as leaves or awning were swept across the parking spot by wind, a false detection of occupancy was made by the radar sensor. 

    My question is that will  IWR1843BOOST EVM be immune to such disturbances in order to prevent false detection of occupancy of parking spots?

    As explained in this video by TI: https://www.youtube.com/watch?v=B3R-3rzmzXU&t=51s

    The sensor is placed at a height of 14 feet above the ground and the view seen by the sensor is shown below:

    As can be seen from the right hand side of the image, the sensor is able to detect more than 60 parking spots. I counted it from the while lines. Is it possible for a single IWR1843 mmWave radar sensor to detect occupancy status of around 60 parking spots when placed at a height of 14 feet above the ground? 

    Thanks and Regards,

    Sritam Paltasingh.