This document describes the steps needed to update the device firmware of PCR, TCR or RDR devices using the Batch Scripts.
Prerequisites / Limits
|Device||TTN Limitations||Recommeded Device Settings|
|PCR2 People Counters||
|TCR Traffic Counters||
|RDR NFC/RFID Reader||
For any object passing through the radar beam, there are three phases:
- Validation and counting
In phase 1, the algorithm searches for objects in the 2D radar beam. As soon as an object has been found, it is pre-tracked to make sure it's not a disturbance. if the object moves within certain velocity and direction bounds, tracking (phase 2) starts. The object is followed through the area, and if it moves out of the area and tracking stops, the algorithm checks if it needs to count the object. If an object enters "Zone R" (right side) and moves out also on zone R without having moved into Zone L before, it is not counted. Whenever an object moves out of Zone L with direction "left" of from Zone R with direction "right", it is counted.
TCR/PCR sensors are capable to process from 1 to 4 targets simultaneously, depending on the configuration. For example, if the distance is too short for the sensor to actually distinguish between multiple targets, it will just track one, with higher accuracy in space constrained environments.
PCR Setup Tool can be downloaded from https://feed.parametric.ch/pcr/setup/PCRSetupTool_Setup.exe
The radar beam of the sensor is 80° horizontally and 34° vertically.
Please align the center of the beam to the center of the walkway (red line) to increase the accuracy.
No. Radar sensor power consumption is too high to run on an internal battery.
PCR2 devices can be powered by USB or a 5-12V DC external power supply.
PCR2 people counters can be mounted overhead or sideways,
For overhead installation place the sensor on top of the entrance, with the LEDs being in line wit the walking direction:
It is NOT possible for the sensor to measure if the measurement radar beam of 80° is across the entrance:
Make sure that the sensor is not mounted too high, because otherwise a part of the 80° radar beam in walking drection is blocked by the wall
In order to prevent radar beam blocking, it's possible to mount the PCR2 in an angle of max. 20°, but the sensitivity to doors is increased in that case:
For sideways installation mount the unit at waist height, to get optimal results:
Do NOT mount the unit in wide entrances where people pass next to each other. The sensor cannot see through objects.
To measure the flow of people on a pavement with a PCR2-OD, mount the unit oberhead so that the sensor points down towards the centre of the walkway. It is also possible to mount the sensor sideways.
We have a public repository with some code examples you may use as a starting point: https://bitbucket.org/parametricengineering/payload-decoders/src/master/
The LEDs normally signal object detection by flashing once.
During the transmission process, both LEDs are switched on until the LoRaWAN server sends back the "ACK".
If this does not happen, the LEDs remain on until the next transmission attempt. We often observe this behavior with TTN/TTI networks.
Yes. Send the following application payload via downlink to port 14 of the device:
The cable diameter should not be larger than 11 mm.
The cables should have 22 to 18 AWG (0.2 - 0.75 mm) cross-section.
Customers outside the EU are requested to organize the return via FedEx. We recommend that you include a packing list with each shipment.
Please prepare a freight invoice according to the following guidelines to shorten the goods clearance at customs:
1. give the product a low value on the invoice or there will be additional charges from customs that must be paid by the shipper.
2. Add "Invoice for customs purposes only, no commercial value" information on the freight invoice.
3. add the RMA number, product serial numbers and warranty status on the freight invoice.
4. add information about the country of origin of the goods.
Please also include an invoice with the RMA number in the shipment, then write the RMA number on the outside of the packaging and attach the delivery bill to save processing time.
The LoRaWAN keys can be changed with the free PCR Setup Tool or via the command line interface.
The following keys can be changed:
Note: The DevEUI uses the hardware serial number by default, but this can be changed.
Avoid moving objects
Do not place the sensor near moving objects (revolving door, escalator, opening/closing door, flowing water).
Avoid entrances that are too wide
PCR2 devices are sensors that detect 2 directions, but cannot see through people. Wide entrances therefore reduce the accuracy as multiple people can walk next to each other but are detected as only one person by the sensor.
Find the optimal mounting height
Optimally, the sensor is placed 1.2 - 1.4m off the ground. If placed too low, it may detect and count additional limb movement.
Alternatively, the sensor can be mounted overhead at 0.5 - 4m above people's heads.
If you experience problems using our equipment with LoRaWAN servers in the US915/AU915 band, please check the following:
Which sub-band does the server support?
Which sub-band does the gateway support?
Use the PCR Setup Tool to set the correct FSB in the device.
- Open the PCR2-XIO device and connect the CONFIG port to a computer via USB cable. The device is supplied with power by the PC and the LEDs should briefly light up.
- Install and start PCR Setup Tool: can be downloaded from https://feed.parametric.ch/pcr/setup/PCRSetupTool_Setup.exe
- In the section "Application Settings" change the number of Capacity Limit to the desired number.
- Press "Save".
- Unplug and then plug in the device so that the settings become active.
As the FCC certification process is very expensive and lengthy, we can only offer FCC/UL certified PCR2 devices if the certification costs are covered or for order quantities of at least 500 devices.
The distance between people should be between 1-1.5m when mounted overheads.
The hold-off time is used to suppress multiple events. Once a count has occurred, this hold-off time runs out while suppressing further counts.
Yes, the PCR2-OD outdoor sensor is also offered as a PCR2-ODS with integrated solar charger and battery.
The PCR2-XIO sensors are full-fledged PCR2-IN devices with additional digital outputs.
The device can thus be used online as well as offline.
If you do not have a dashboard at hand, the easiest way is to use P-TAGS (Parametric Tags). P-TAGS are web components that allow sensor data to be integrated directly and easily into a web page. The uses of P-TAGS are unlimited, as they can be easily integrated into any website. All you need to do is to include a script in the header and then the P-TAGS can be used like ordinary HTML tags.
Code examples can be found here:
For an kickstart just download the attached file and write the EUI (unique identifier) of your sensor in the respective fields: