Gas detection system

A gas detection system used for detecting a concentration of a gas contained in a second environment based on a concentration of the gas contained in a first environment, the gas detection system comprising:

• a gas detection device, including:
• a first detection module;
• a second detection module, each of the first detection module and the second detection module includes:
• a first electrode with a surface exposed to the second environment;
• a second electrode;
• a reaction layer, disposed between the first electrode and the second electrode;
• and
• a plurality of detection pillars inserted in the reaction layer, two ends of each of the pillars connected to the first electrode and the second electrode, respectively;
• a first dielectric layer disposed between the second electrodes, the first dielectric layer having a through hole and a heating electrode, the second electrode disposed at the two end of the through hole and the through hole communicated with the first environment;
• and
• a second dielectric layer disposed on the first electrode of the second detection module, the second dielectric layer having a cavity with an opening and a diffusion hole communicating the cavity with the second environment, the first electrode of the second detection module being at the opening;
• and
• a programmed control module respectively connected to the first electrodes and the second electrodes, the control module detecting the voltage output from the first detection module to obtain the concentration of the gas contained in the second environment, when the detected voltage is smaller than a value, the control module outputting a voltage signal to the second detection module and detecting a steady state current corresponding to the voltage signal to obtain the concentration of the gas contained in the second environment corresponding to the steady state current.