Subway Carriage Climate Control Using IoT Feedback Zoning
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Solution Overview
Problem
In subway environments, maintaining stable temperature and humidity levels is challenging due to large spaces and varying passenger numbers, leading to fluctuations and discomfort for passengers.
Innovation Solution
An Internet of Things (IoT) system is implemented, using collecting devices inside and outside carriages to gather data on temperature and humidity, which is then used to adjust refrigeration and ventilation power, generating control instructions for temperature regulation devices to maintain optimal conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If temperature and humidity regulation systems are set up in subway carriages, then passenger comfort is improved, but temperature and humidity stability deteriorates due to large carriage space and varying passenger numbers
Solution Approach 1:
The carriage interior is divided into multiple monitoring zones with collecting devices distributed at different positions. Each zone independently monitors temperature and humidity, allowing localized detection and targeted regulation, which improves both comfort and stability despite large carriage space
Solution Approach 2:
The system continuously collects temperature and humidity data from multiple positions, compares it with standard ranges, and automatically adjusts air conditioning and ventilation devices. This closed-loop feedback mechanism maintains stability while ensuring passenger comfort
2Measurement precision
If collecting devices are installed inside carriages to monitor temperature and humidity, then regulation accuracy is improved, but device complexity increases
Solution Approach 1:
The collecting devices are designed as multi-functional units that simultaneously monitor temperature, humidity, and passenger presence. This universal approach improves measurement accuracy without proportionally increasing system complexity, as one device performs multiple sensing functions
Solution Approach 2:
Multiple sensing functions (temperature sensing, humidity sensing, occupancy detection) are merged into integrated collecting devices. This combination reduces the total number of separate components while enhancing comprehensive monitoring accuracy
Data Source
AI summary
The embodiments of the present disclosure provide a method and an Internet of Things system for regulating air conditioning temperature of a subway in a smart city. The method includes: obtaining, based on at least one collecting device including at least one first collecting device and at least one second collecting device, temperature data and humidity data inside and outside a carriage of a plurality of carriages of the subway; and determining, based on the temperature data and the humidity data, refrigeration power adjustment values and ventilation adjustment values of the plurality of carriages and generating a control instruction for controlling a temperature regulation device and a ventilation device.