Networked intelligent CO sensor

A sensor and sensor node technology, applied in the field of smart sensors, can solve the problems of sensor inconvenience, limit the selection of analog CO sensors, etc., and achieve the effects of low implementation cost, reduction of bus traffic, and simplification of transmitter circuits

Active Publication Date: 2014-08-06
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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, ...

Method used

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  • Networked intelligent CO sensor
  • Networked intelligent CO sensor
  • Networked intelligent CO sensor

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with specific examples.

[0021] Such as figure 1 As shown, the networked intelligent CO sensor described in this embodiment is encapsulated into a four-wire intelligent CO sensor by epoxy resin, and its network protocol adopts an I-based 2 The application layer protocol of the C bus, which includes a four-wire socket M100, a power supply circuit M101, a communication interface circuit M102, a CO detection conversion circuit M103, and a single-chip microcomputer circuit M104, wherein the networked intelligent CO sensor communicates with the transformer through the four-wire socket M100 Transmitter and other automatic instruments or devices that use this smart CO sensor; the two power lines of the four-wire socket M100 are connected to the power circuit M101, and the power supply for the entire smart CO sensor is provided through the power circuit M101; the four-wire socket M100 The two communication l...

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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...

Claims

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Application Information

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IPC IPC(8): G01N33/00
Inventor 李向阳潘亮平黄恩配
Owner SOUTH CHINA UNIV OF TECH
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