SOARABILITY 2BEK2CITYSENSE CitySense-X Environmental Mobile Monitoring System User Guide

: June 17, 2024
: SOARABILITY

Table of Contents

CitySense-X Environmental Mobile Monitoring System
- User Manual
  - 1. Basic Information
  - 2. Main Components
    - FCC Compliance Statements
    - FCC Radiation Exposure statement
- References
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CitySense Environmental Mobile Monitoring System | Hardware Specifications

CitySense-X Environmental Mobile Monitoring System

User Manual

Soarability PTE. LTD
[V1.0] 2023.10.27

1. Basic Information

CitySense-X is an environmental mobile monitoring system that can be easily mounted on various public transportation vehicles (e.g., buses and taxis) and urban service vehicles (e.g., garbage trucks and law enforcement vehicles).

As the vehicles move within an area, CitySense-X automatically collects environmental data with geographical information and time stamps, which are displayed and analyzed on the accompanying CitySense.ai spatiotemporal big data analysis platform.
CitySense-X can reliably collect various environmental data, including PM2.5, PM10, TSP, TVOC, and CH4, even under complex temperature and rainy/foggy conditions.

Dimensions: 598x418x225mm.
Net Weight: Varies between approximately 4-6.5kg depending on the configuration, with the full configuration weighing about 6.5kg.
Power Supply: Vehicle cigarette lighter or cabin fuse box (12V).
Average Power Consumption: 15-35W, depending on temperature conditions and configuration. Maximum Instantaneous Power Consumption: 45W (full configuration).
Operating Temperature: -20°C to 50°C, with the ability to regulate the temperature for internal sensors.
Operating Humidity: 0-100%RH, automatically stops air intake when condensation is present in the environment.
Protection Level: IPX4 (no need to remove from the vehicle in rainy or foggy weather).

2. Main Components

SOARABILITY 2BEK2CITYSENSE CitySense-X A1

Air Intake Nozzle
Specially designed to prevent rain from entering the airway. The design conforms to the isokinetic sampling principle, reducing the impact of equipment movement speed on the representativeness of particulate sampling.
Features a quick-release design. During laboratory calibration, it can be easily replaced with a pagoda-shaped intake nozzle for standard gas entry.
Particulate Matter Monitoring Module (Optional)
Detection principle: Laser scattering.
Monitoring particle size range: 0.3-100μm.
Counting efficiency: 98% (≥0.5m), 50% (0.3μm).
Measurement resolution: 1μg/m3.
Linear range:
– PM2.5: 0-1000μg/m3.
– PM10: 0-1000μg/m3.
– PM100/TSP: 0-2000μg/m3.
Instantaneous response time: <2s.
T90 response time: ≤10s.
PM2.5 measurement consistency:
– ±10% (100-1000μg/m3).
– ±10µg/m3 (0-100μg/m3).
PM10 measurement consistency:
– ±15% (100-1000μg/m3).
– ±15µg/m3 (0-100μg/m3).
Baselines and slopes adjustment are supported via software.
Equipped with an anti-EMI shield.
Dual-laser design enhances the accuracy of large particulate matter detection.
Average mean time between failures: ≥20,000 hours.
PM and Condensation Water Filter Module
This module includes 1x 5μm filter and 4x 0.45μm filters.
After PM is monitored, this module filters out particulates and condensation water (if any) within the gas sample, reducing interference and dust accumulation for downstream gaseous monitoring modules, thus extending the product’s lifespan. It is recommended to check every 5,000 hours of use. If there is noticeable dust accumulation inside the module, it needs to be replaced.
TVOC Monitoring Module (Optional)
Detection principle: Ultraviolet light ionization detection (PID).
Target gas: Volatile organic compounds (VOC) with ionization potentials less than 10.6eV.
Linear range: 0-40ppm (isobutylene).
Minimum detection limit: 10ppb (isobutylene).
Startup stabilization time: ≤180 seconds (stabilizes to within 0.03ppm in clean air).
Repeatability: ≤2%FS.
T90 response time: <5s.
Measurement resolution: 5ppb (isobutylene).
The gas chamber has a hydrophobic membrane, significantly reducing humidity interference from 0-75%RH.
Average mean time between failures: ≥5,000 hours.
CO2 Monitoring Module (Optional)
Detection principle: Non-dispersive infrared (NDIR).
Optical path material: Mold steel.
Optical path length: 90mm.
Linear range: 0-2000ppm.
Minimum detection limit: 1ppm.
Measurement resolution: 1ppm.
Repeatability: ≤1%FS.
Baseline temperature drift: ±2%FS.
Range drift: ±2%FS.
Airway Monitoring Module
Real-time monitoring of the gas sample’s temperature, humidity, and flow rate (in SLM). Equipped with a 1.8-inch display screen for easier maintenance and inspection.
CH4 Monitoring Module (Optional)
Detection principle: Internal Multi-Pass Tunable Diode Laser Absorption Spectroscopy (MP-TDLAS).
Excellent gas selectivity, sensitive only to CH4 gas.
Linear range: 0-10,000ppm.
Minimum detection limit: 2ppm.
Measurement resolution: 1ppm (static signal standard deviation ≤300ppb).
Repeatability: <1%FS.
T90 response time: ≤10s (from 0 to 1000ppm).
Features a three-stage temperature control system (shell -> gas chamber -> laser), ensuring excellent data quality within a temperature range of -20°C to 50°C.
Pump Module
Flow rate: 1.2SLM. The flow rate decreases when the gas path is blocked (e.g., dust accumulation inside the particulate matter and condensation water filter module).
The pump module will automatically stop when condensation water is detected in the environment, reducing the interference of rain and fog on PM measurement and extending the product’s lifespan.
Can be configured to link flow rate with device movement speed, adhering to the isokinetic sampling principle.
Central Control Module
Responsible for:
– Aggregating data from other modules and edge computing,
– Power distribution and consumption monitoring for each module, Equipped with a 1.5GHz 64-bit quad-core Cortex-A53 processor and 1GB DDR3L memory.
Motherboard
Provides neat power supply routes, data exchange routes, and some structural support for various modules.
Sensor Component Compartment 1
Provides a more suitable operating temperature for CO2, PM, and TVOC sensor modules.
LCD Displays
Located on both sides of the device, it has four modes: off, display user- defined images, rolling display of real-time monitoring data, and display detailed device operating status.
Top Cover
Made of PC+ABS material, featuring a heat reflection design.
Bottom Cover
Made of PC+ABS material, featuring a heat reflection design.
Rain Sensor
Monitors the rain and fog conditions in the environment. When condensation is present in the environment, it can trigger the pump module to stop air intake, protecting the sensing components and eliminating the interference of rain and fog on PM measurement.
Electronically Controlled Automatic Suction Cups
Automatically monitors the negative pressure inside the suction cups. When the negative pressure is insufficient, a warning light illuminates, and it automatically pumps to tighten. The pump has a manual shut-down feature for easy debugging and installation/removal. The suction cups feature a universal joint, adapting to installation surfaces of different curvatures.
Switch for the Electronically Controlled Automatic Suction Cups
Turn on/off the electronic control automatic suction cups.
Sensor Component Compartment 1 Heat Exchange Air Intake
Overall Heat Exchange Exhaust
CH4 Monitoring Module Heat Exchange Air Intake
CH4 Monitoring Module Heat Exchange Exhaust
Power Cable
12V waterproof power cable, flat-shaped, can withstand repeated pinching by car door seals.

FCC Compliance Statements

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to pro-vide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

FCC Radiation Exposure statement

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 5mm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

FCC ID: 2BEK2CITYSENSE