RS485 communication and Modbus protocol mining intrinsic-safety type infrared temperature sensor

Abstract

The invention discloses an RS485 communication and Modbus protocol mining intrinsic-safety type infrared temperature sensor, and the temperature sensor mainly comprises a pedestal, a front cover, a control circuit board, a temperature sensing module, and a remote host. The inner side wall of the pedestal is fixedly connected with a control circuit board, and the bottom of the pedestal is sequentially connected with a loudspeaker mouth and the temperature sensing module. The control circuit board mainly comprises a signal receiving transmitter, a single-chip microcomputer, an RS485 serial communication interface, a Modbus protocol module and a relay. The temperature sensing module comprises a thermosensitive element, an outgoing line mouth and a sheath line, wherein the thermosensitive element, the outgoing line mouth and the sheath line are connected sequentially. A front cover is provided with a Nixie tube display screen, a buzzer and a test button. The Nixie tube display screen is connected with the single-chip microcomputer, and the buzzer is connected with the relay. The RS485 serial communication interface and the Modbus protocol module are connected with the remote host. The sensor provided by the invention is scientific and reasonable in structural design, is sensitive in induction, is high in speed, and saves the cost. The RS485 serial communication interface and the Modbus protocol module are used for controlling the alarm and are connected with the remote host, thereby achieving the multi-machine sharing of the remote host.

Description

technical field [0001] The invention relates to the field of intrinsically safe infrared temperature sensors for mines, in particular to an intrinsically safe infrared temperature sensor for mines with RS485 communication and Modbus protocol. Background technique [0002] At present, most coal mines in my country are full of methane and coal dust explosions. When the underground ambient temperature reaches a certain value, in the case of sufficient oxygen, methane and coal dust will burn or even explode, causing major safety accidents. In order to effectively prevent accidents, mine-used intrinsically safe temperature sensors are installed underground. When the temperature exceeds a fixed value, the external temperature signal is transmitted to the host, which will remind people to take preventive measures quickly. Generally, the temperature detection of stationary objects Relatively easy, but for equipment that is moved or adjusted for operation, there are relatively few te...

AI Technical Summary

Problems solved by technology

[0004] Light does not turn when it travels in a straight line, and the same is true for infrared rays. Therefore, when the infrared sensor is used, the angle adjustment of the light needs to be controlled manually, and some even need to measure the surface temperature of the gap, or it is difficult to measure the parts of some heating machines.

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