Nwave platform can manage labeled per-space parking sensors inside the area, which are car counting sensors on entrances.
This can be useful when there is a need to control the occupancy of a few particular spaces inside the parking area equipped with car counters. For example, it is possible to look at the availability of spaces with EV charges inside the bigger area.
This document describes how to set up the area, which is controlled by a car counting system and contains 4 EV charging spaces.
As you can see, the parking contains 2 entrances: one for entry and one for exit. Both entrances should be equipped with sensors with “Car Counter”(CC) firmware.
The 4 spaces with EV charges should be equipped with sensors that have Par Space (PS) firmware installed.
All these sensors can be registered in the same project, zone, and group.
For the correct working of the sensor configuration, the positions must be marked with labels by the following rule:
Entry sensor position - label IN
Exist sensor position - label OUT
EV sensor positions - label EV
As long as the parking area contains 20 spaces, the Zone zone capacity must be set to 20 by these instructions: https://nwaveio.atlassian.net/wiki/spaces/ND/pages/3018686469/Car+Counters+Getting+Started#Capacity-configuration
You can read more about the sensor positioning in these documents:
Since sensors are positioned and labeled, the analytics, car counting, and real-time parking systems start processing data.
Now you can see full parking occupancy on the Analytics Car-Counters page.
Please, keep in mind, that per-space and car counting systems are different onesFor, so you should get data from different APIs. For example, If you need to get full parking occupancy data, you can use the following request to car counters analytics API:
curl --request GET 'https://api.nwave.io/analytics/v1/car_counters/realtime/occupancy_summary?group_by=group&zone_id=123' --header 'x-Auth-Token: XXXXXXXXXXXX'
Even though, for getting occupancy of EV spaces only, you should use per-space analytics API:
curl --request GET 'https://api.nwave.io/analytics/v1/realtime/occupancy_summary?zone_id=123&labels=EV&group_by=zone' --header 'x-Auth-Token: XXXXXXXXXXXX'
However, if you use GraphQL API v2, you can use the same API for getting CC and PS occupancy data.
Additional information about the API is available on pages: