Looking for advice for a 'crowd density' project' - Page 1
Forum section: electronics / beginners

author: ardenrice
author_rank: Newbie
timestamp: July 09, 2025, 02:39:21 pm
content: I'm working on a project to detect density of crowds at long range for an app I've been building as well as research purposes.The idea is meshing ESP32-S3's as nodes with TOF sensors, thermal cameras, PIR. and Lora.as well as radar for longer range detection outside above sensors detection range, maybe IWR6843ISK,This project is a pretty big leap in terms of complexity to what I have done before and is being done at home.I plan on putting the data on a map overlay of the region I am building the app as a 'heat map' to display the density of the crowds.What I'm looking for in the post is possible assistance with hardware decisions as well as general advice for the implementation and programming for a more a project of this kind.Thank you,

author: Terry Bites
author_rank: Super Contributor
timestamp: July 09, 2025, 04:43:54 pm
content: I assume this is to aid the national guard in violating the right to legitimate protest.Count the number off cell phone transmissions?That will only detect n.zombies though that may be enough to get an idea.Google: "In GSM networks, the uplink frequency range is typically 890 to 915 MHz, while the downlink range is 935 to 960 MHz."Check your region.egwww.mobilephonetechnology.co.uk/v2/view/index.php?id=22

author: ardenrice
author_rank: Newbie
timestamp: July 09, 2025, 04:56:09 pm
content: I assume this is to aid the national guard in violating the right to legitimate protest.-Im not sure what you mean by this?I've been working on an app for food trucks, ice cream trucks, etc, It would also be fun to experiment with smart city applications and I have some other ideas with it. for example, the food truck / ice cream truck person can see which areas have the most people. Another example would be potential help for emergency systems or coordination in critical situations for people as well as EMS/Fire/Police.I appreciate the resource though

author: Simmed
author_rank: Frequent Contributor
timestamp: July 09, 2025, 06:25:14 pm
content: ha !i had a similar lingering questionsee the random search about a steak placehow does google know human traffic volume at different hours of the day?is it mobile signal tracking ?

author: NE666
author_rank: Frequent Contributor
timestamp: July 09, 2025, 08:27:13 pm
content: Quote from: Simmed on July 09, 2025, 06:25:14 pm"To determine popular times, wait times, and visit duration, Google uses aggregated and anonymized data from users who have opted in to Google Location History. Popular times, wait times, and visit duration are shown for your business if it gets enough visits from these users."[source:https://support.google.com/business/answer/6263531]"When (Google) Location History is enabled, Google uses various inputs to estimate your location, including GPS, Wi-Fi, and cell tower signals. "

author: ledtester
author_rank: Super Contributor
timestamp: July 09, 2025, 09:22:00 pm
content: A web search for "people counting radar":https://sensmax.eu/solutions/outdoor-people-counting-in-parks/

author: RJSV
author_rank: Super Contributor
timestamp: July 10, 2025, 04:29:43 am
content: Technically speaking, I would first look at the method that gives quick results, you can check on later. Those first results help guide a more detailed plan, for more ease and accuracy.The political protest stuff may or may not be going on. But I've often figured that a good police type agency is having pretty effective ways of monitoring things. Heck, you've given google all your details,...as many of us do, reluctantly that is.Might be too much business plan overlap, with monopoly guys at Amazon, Google, etc.