A networked intelligent co sensor

Abstract

The invention discloses a networked intelligent CO sensor which adopts an application layer protocol based on I<2>C bus, and comprises a four-wire socket, a power circuit, a communication interface circuit, a CO detection converting circuit and a singlechip circuit, wherein two power lines of the four-wire socket are connected with the power circuit; two communication lines of the four-wire socket are I<2>C communication lines, and connected with the communication interface circuit; the communication interface circuit is connected with the singlechip circuit; the singlechip circuit adopts a singchip STM32L151C8T6 with a Cortex-M3 kernel; an EEPROM memory is contained in the singlechip; required DACs, ADCs and I<2>C peripherals are integrated on the singchip; the CO detection changing circuit is connected with the singlechip circuit. The networked intelligent CO sensor has an explosion-proof function, directly outputs data signals, simplifies the transmitter circuit, can obtain measurement values through unpacking of the transmitter, has a network function, can automatic allocate the addresses, and can realize the plug and play function; one transmitter can be connected with a plurality of intelligent sensors comprising intelligent CO sensors.

Description

technical field [0001] The invention relates to the technical field of smart sensors, in particular to a networked smart CO sensor. Background technique [0002] Commonly used CO sensors are mostly analog sensors. When connecting to the transmitter for the first time, the sensor needs to be calibrated with standard gas before it can be used, and the calibration data is stored in the transmitter. If the sensor needs to be replaced, it must be calibrated again. The calibration process is generally completed by the user at the site of use, so the user must prepare standard gases of different concentrations, which is very inconvenient for the user to use the CO sensor. In addition, different types of analog CO sensors need to have corresponding circuits in the transmitter, so one type of transmitter can only be configured with a specific analog CO sensor, which limits the user's choice of analog CO sensors. Contents of the invention [0003] The purpose of the present invent...

AI Technical Summary

Problems solved by technology

The calibration process is generally completed by the user at the site of use, so the user must prepare standard gases of different concentrations, which is very inconvenient for the user to use the CO sensor

In addition, different types of analog CO sensors need to have corresponding circuits in the transmitter, so one type of transmitter can only be configured with a specific analog CO sensor, which limits the user's choice of analog CO sensors

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