The application case of YONGS industrial computer in power station monitoring and dosing system is introduced:
1. Application statement: The chemical water vapor computer monitoring and dosing system of the power plant unit is used for the data collection, processing, and start-stop control of the chemical water vapor meter. The system adopts the communication method between the upper EVOC industrial computer and the intelligent module, and the software adopts Kingview 6.51. The chemical computer monitoring system has the functions of instrument data collection, rectification, performance, analysis, retention, alarm, printing, etc. The dosing pump control has the functions of remote starting, stopping, interlocking/removing interlocking, and monitoring of operating conditions.
2. System efficacy
Data collection: analog quantity data collection and switch quantity collection.
Data output: switch output.
Data retention and processing: Data is retained in a standard database, which can retain historical data for more than three years.
Real-time performance: real-time performance of analog quantity data, real-time performance of switching value; it can be displayed according to the on-site system diagram, list performance and real-time trend diagram.
Real-time alarm function: It has a real-time alarm function that collects data, and gives bloody ink and ink alarms through the screen.
Alarm history interrogation: You can interrogate the history records of each parameter overrun alarm, and the separation amount hindering the alarm.
Real-time curve performance, real-time dynamic and static performance parameters of the instantaneous curve.
History curve performance, can call out the history curve of multiple parameters according to the need, can make the curve expansion and printing.
Report management: can interrogate daily reports, monthly reports, annual reports, and can print reports as necessary.
Configuration of range and alarm limit: The user can configure the range high and low limit, alarm high and low limit of the collected points through the software.
User management: The user level of different authorizations can be divided according to the needs.
Dosing system: The software can monitor the operation status of each pump for ammonia addition and control functions such as remote start and stop of the dosing pump, and can realize remote automatic control
3. The hardware composition of the monitoring system:
Host computer: a set of YONGS industrial control IP610 industrial computer, PHILIPS 17″ LCD monitor
Data acquisition module Advantech ADAM4017, ADAM4053,
Master Module Advantech ADAM4068
Communication module Advantech ADAM45204.
Principle of monitoring system: The system adopts a set of industrial computer experience communication module (ADAM4520), data acquisition module (ADAM4017, ADAM4053), and control module (ADAM4060) to form a monitoring system, which completes the monitoring of chemical parameters of the two units and the dosing system. Control from afar. ADAM-4017 is a 16-bit 8-channel analog input module, all channels supply programmable inputs.
This module is the most cost-effective solution for industrial measurement and inspection applications. Its light disconnect input supplies a 3000 VDC disconnect between the analog input and the module, guarding the module and outbuildings from damage from input clear high voltages. ADAM-4017 provides lamp signal adjustment, A\D conversion, interval correction, and RS-485 digital communication functions. ADAM-4017\4018 uses a 16-bit differential processor to control the conversion of sigma-Delta A\D, and convert the voltage or current of the sensor to a digital signal. DAM4017 is used as an imitation light signal collection module, which is responsible for collecting the imitation data sent by various water meters on site, and sends it to the upper computer via the RS485 bus (the ADAM4520 module needs to be installed on the computer side). Collection of digital light signals: The switch lights of each controlled site building such as dosing pump and water replenishment solenoid valve are responded to each channel of ADAM4053 module by the closing/disconnecting of the contact of the corresponding relay, and then sent to the upper computer. We use ADAM4060 to complete the control of each switch.
4. The software composition of the monitoring system:
Operating System: Windows2000 Chinese Professional Edition Program Execution Software: D:\Kingview\Touchvew.exe Operational History Database: E:\Power Station Phase II Database\historyrecord.mdb Project Status: D:\Power Station Phase II
5. Guard of the system
This system has an automatic entry function. After the machine is powered on, it will automatically enter the system diagram form of the monitoring system. If the system software has an irreversible obstacle, you can turn off the power of the host computer and then restart the computer.
6. The end
Since the system was put into operation, the data has been collected, and each switch output can control the operation of the building, which has been well received by users.
