The utility model provides an environment monitoring device for
tunnel safety, which comprises a shell, an air
inlet flow channel, a
semiconductor detection unit, a control panel and a power supply module, the outer wall of the air
inlet flow channel is in a circular truncated cone shape and can gather and accelerate air flow, so that the
semiconductor detection unit can obtain gas data more efficiently and accurately, and the detection efficiency and sensitivity are improved; in the filter piece connected with the air
inlet flow channel, the filter screen can intercept impurities,
pollution to the detection unit, influence on result accuracy and reduction of element loss are avoided, and the threaded connection of the connecting cylinder facilitates maintenance; the anti-vibration pad at the bottom of the shell supports the air
inlet channel, external vibration influence is reduced, looseness of internal components is reduced, and stable work of the device is guaranteed; the warning lamp is electrically connected with the controller and the like, and warning signals can be sent out in time when abnormity is detected, so that
rapid processing is facilitated, and the early warning capacity is improved. According to the device, efficient and accurate detection, stable operation and timely early warning are realized, and the
tunnel safety monitoring level is improved.