CN202433337U

CN202433337U - Formaldehyde monitoring system based on controller area network (CAN) bus

Info

Publication number: CN202433337U
Application number: CN201120548950XU
Authority: CN
Inventors: 熊璞; 张磊; 张永恒
Original assignee: CHENGDU ZONGXUN TECHNOLOGY Co Ltd
Current assignee: CHENGDU ZONGXUN TECHNOLOGY Co Ltd
Priority date: 2011-12-26
Filing date: 2011-12-26
Publication date: 2012-09-12
Anticipated expiration: 2021-12-26

Abstract

The utility model provides a formaldehyde monitoring system based on the CAN bus and aims at solving the problems in the wood-based panel field such as over standard of formaldehyde emission. An electrochemical formaldehyde sensor and a transmitter are adopted to transmit collected data to an amplifying and filtering module for processing, then the data are written in a send buffer of a CAN bus controller, a sending command is started, the data is sent to the CAN bus, the CAN bus controller receives the data automatically, stores the data to a CAN receive buffer after filtering, and sends an interrupt request to an ATmega128 micro controller unit (MCU) simultaneously, and the ATmega128 MCU can read the data to be received from the CAN receive buffer the at the moment. A voice prompt and a ringing are started for alarming if the data exceed a set limit. By aid of the adoption of features of the field CAN bus system, the formaldehyde monitoring system based on the CAN bus has the advantages of being greatly improved in reliability and timeliness, low in development cost, high in cost performance, and simple and convenient to install and maintain.

Description

Formaldehyde monitoring system based on the CAN bus

Technical field

The utility model relates to wireless network monitoring field, and a kind of formaldehyde monitoring system based on the CAN bus is provided.

Background technology

The formaldehyde that is discharged in the constructional ornamental material has a strong impact on human beings'health, and formaldehyde belongs to toxic chemical substance, contacts low dosage formaldehyde for a long time and can cause chronic respiratory disease.High-concentration formaldehyde is all toxic to nervous system, immune system, liver etc., and formaldehyde has teratogenesis, carcinogenesis.Because formaldehyde has caused harm to the healthy of people, the monitoring content of formaldehyde has very important meaning.China adopts the mode of sampling observation to public place, family, working environment Determination of formaldehyde content at present.This mode can not be carried out continuous, online and real-time monitoring and control to above-mentioned environment, and monitoring link obviously lags behind.In the face of the actual state of the artificial board industry of China, make up the active demand that formaldehyde monitoring net has become the wood-based plate industry.

The utility model content

The purpose of the utility model is to solve the problem that wood-based plate industry burst size of methanal exceeds standard, and a kind of formaldehyde monitoring system based on the CAN bus is provided.

The utility model solves the technical scheme that its technical matters adopted: a kind of formaldehyde monitoring system based on the CAN bus; It is to be connected through the CAN bus by a plurality of field node; Each field node is by data processing module, and the data acquisition module that is connected with data processing module, amplification and filtration module, CAN communication module, LED display module, voice cue module, warning processing module and power module are formed;

Described data acquisition module is galvanochemistry formaldehyde sensor and transmitter: the content of formaldehyde in the induced environment, and to single-chip microcomputer simulating signal is provided through transmitter;

Described data processing module is the ATmega128 single-chip microcomputer: processing, storage and communication unit;

Described CAN communication module is CAN bus controller, CAN bus transceiver and optocoupler: send data and receive data;

Described LED display module: show the system time, intelligent node address ID, concentration of formaldehyde value and various error message;

Described warning processing module is ring: the concentration of formaldehyde value then starts ring above the setting limit value and reports to the police;

Described voice cue module: the concentration of formaldehyde value surpasses the setting limit value and then starts voice suggestion;

Described electric power source pair of module total system power supply;

Described galvanochemistry formaldehyde sensor and transmitter write the data transmission that collects to amplification and filtration module the transmission buffer zone of CAN bus controller after treatment; And order is sent in startup; Send to data on the CAN bus, CAN bus controller automatic reception data, and deposit the CAN send buffer after filtering in; Send interrupt request to the ATmega128 single-chip microcomputer simultaneously, this moment, the ATmega128 single-chip microcomputer can read the data that will receive from the CAN send buffer.Data surpass to set to limit then to start voice suggestion and start ring reports to the police.

The utlity model has following beneficial effect:

Utilize the characteristics of Field Bus CAN system, the information processing scene of being reduced to is carried out, manage concentratedly through the center monitoring main frame.Use the CAN bussing technique, greatly improved reliability, the real-time of system, system development is more inexpensive, and the ratio of performance to price is high, and installation and maintenance are simple and convenient.

Description of drawings

Fig. 1 is the structured flowchart of the utility model.

Embodiment

A kind of formaldehyde monitoring system based on the CAN bus; It is to be connected through the CAN bus by a plurality of field node, and each field node is made up of data acquisition module, amplification and filtration module, data processing module, CAN communication module, LED display module, voice cue module, warning processing module and power module.

Data acquisition module is galvanochemistry formaldehyde sensor and transmitter: the content of formaldehyde in the induced environment, and to single-chip microcomputer simulating signal is provided through transmitter; Data processing module is the ATmega128 single-chip microcomputer: processing, storage and communication unit; The CAN communication module is CAN bus controller, CAN bus transceiver and optocoupler: send data and receive data; LED display module: show the system time, intelligent node address ID, concentration of formaldehyde value and various error message; The warning processing module is ring: the concentration of formaldehyde value then starts ring above the setting limit value and reports to the police; Voice cue module: the concentration of formaldehyde value surpasses the setting limit value and then starts voice suggestion; The power supply of electric power source pair of module total system.

Galvanochemistry formaldehyde sensor and transmitter write the data transmission that collects to amplification and filtration module the transmission buffer zone of CAN bus controller after treatment; And order is sent in startup; Send to data on the CAN bus, CAN bus controller automatic reception data, and deposit the CAN send buffer after filtering in; Send interrupt request to the ATmega128 single-chip microcomputer simultaneously, this moment, the ATmega128 single-chip microcomputer can read the data that will receive from the CAN send buffer.Data surpass to set to limit then to start voice suggestion and start ring reports to the police.

The utility model utilizes the characteristics of Field Bus CAN system, and the information processing scene of being reduced to is carried out, and manages concentratedly through the center monitoring main frame.Use the CAN bussing technique, greatly improved reliability, the real-time of system, system development is more inexpensive, and the ratio of performance to price is high, and installation and maintenance are simple and convenient.

Claims

1. formaldehyde monitoring system based on the CAN bus; It is characterized in that: it is to be connected through the CAN bus by a plurality of field node; Each field node is by data processing module, and the data acquisition module that is connected with data processing module, amplification and filtration module, CAN communication module, LED display module, voice cue module, warning processing module and power module are formed;

Described warning processing module is ring: concentration of formaldehyde then starts ring above the setting limit value and reports to the police;

Described electric power source pair of module total system power supply;

Described galvanochemistry formaldehyde sensor and transmitter write the data transmission that collects to amplification and filtration module the transmission buffer zone of CAN bus controller after treatment; And order is sent in startup; Send to data on the CAN bus, CAN bus controller automatic reception data, and deposit the CAN send buffer after filtering in; Send interrupt request to the ATmega128 single-chip microcomputer simultaneously, this moment, the ATmega128 single-chip microcomputer can read the data that will receive from the CAN send buffer; Data surpass to set to limit then to start voice suggestion and start ring reports to the police.