Summary of the invention
The utility model has aimed to provide the intelligent pharmaceutical factory humiture observation system that a kind of totally digitilized temperature and humidity measure based on the Profibus-DP fieldbus and ventilation, air-conditioning are controlled to be one, system architecture is simple, be easy to expand, and has the characteristics such as waterproof is anti-lightning strike, corrosion-resistant.Not only the staff of pharmaceutical factory can pass through computing machine, the temperature and humidity Real-Time Monitoring result of pharmaceutical factory in the comprehensive control 24 hours, and the Historical Monitoring record of pharmaceutical factory, and production status and the record of pharmaceutical factory can be checked and monitor in higher authority at any time.System has the functions such as the measurement of detection, data communication, data Display and Print, multimode warning, equipment control and Erosive Accident.
The utility model is provided with WinAC master station, S7-200PLC slave station and I/O configuration, humiture observation system, four ingredients of air conditioner control system.For realizing the function of WinAC, the WinAC master station is by the data communication of carrying out between Profibus-DP interface module and the PLC; The PLC slave station is comprised of Siemens PLC CS7-200 and LTM8303 deconcentrator module, and interconnect by serial port, pharmaceutical factory's temperature and humidity control system is comprised of DS18B20 digital temperature sensor, LTM8820 " one-wire bus " humiture probe, ventilation and air conditioning system is comprised of relay K M1, KM2 and frequency converter, the work of relay K M1, KM2 control frequency converter.
The utility model is to realize like this monitoring: the supervisory system team control distributed frame figure of pharmaceutical factory as shown in Figure 1, by upper industrial computer with based on site intelligent node and the I/O module composition field bus control system thereof of Profibus-DP, the main control module of Profibus-DP fieldbus has been selected the WinAC based on WindowsNT of Siemens, system's host computer is both as the soft-controller of PLC like this, bear remote control function, again as monitoring management computer.The PLC slave station is comprised of Siemens S7-200 and LTM8303 deconcentrator module, and interconnects by serial port.The air conditioner control system is comprised of PLC slave station control frequency converter and blower fan group, air-conditioning unit, and control command is sent by master controller.
The beneficial effects of the utility model are: can realize the 24 hours full-automatic humiture of pharmaceutical factory and demonstration, storage of history data Ps of data thereof of detecting, when humiture surpasses setting value, can automatically regulate air-conditioning, blower fan and humidifier, also have simultaneously various ways accident alarming, anti-misoperation function and crucial operational factor display setting hold function.Operating personnel can be according to actual needs set the parameters such as temperature, humidity of pharmaceutical factory at central control room, monitor the ruuning situation of each workshop equipment of each pharmaceutical factory and print operational factor and curve.
The utility model is reserved with communication interface, is convenient to the supervisory system networking with upper level competent authorities.
Embodiment
The supervisory system team control distributed frame figure of pharmaceutical factory as shown in Figure 1, by upper industrial computer with based on site intelligent node and the typical field bus control system of I/O module composition thereof of Profibus-DP, the main control module of Profibus-DP fieldbus has been selected the WinAC based on WindowsNT of Siemens, system's host computer is both as the soft-controller of PLC like this, bear remote control function, again as monitoring management computer.For realizing the function of WinAC, at the host computer server Profibus-DP is installed, interface module CP5611, WinAC control engine carries out the task such as communicate by letter between data communication data acquisition, analysis and Control, PC and the PLC by Profibus-DP interface module disk 611 and distributed director.Slave station is comprised of Siemens S7-200PLC and LTM8303 deconcentrator module, and interconnects by serial port.Regularly send order to the LTM8303 module by PLC by serial ports, the LTM8303 module sends back PLC with corresponding measurement data after receiving order, by the Profibus-DP bus data is sent to master station by PLC centralized calculation, processing again.Each deconcentrator module can articulate 8 temperature and humidity measurement cables, measures 8 temperature and humidity measurement points of cable mixed-arrangement for every, and single like this deconcentrator module can be arranged 64 measurement points.Pharmaceutical factory's temperature and humidity control system hardware mainly comprises DS18B20 digital temperature sensor and LTM8820 " one-wire bus " moisture probe.Ventilation, air-conditioning control are to be finished by slave computer PLC slave station control transducer drive blower fan group and air conditioner, and control command is sent by master controller.Can adopt air draught type and blowing-type to ventilate according to the purpose of ventilating (cooling or hydrofuge), but not only can whole Ventilation Control but also local ventilation control, simultaneously according to the air output that is distributed in Temperature Humidity Sensor around the air channel and measures temperature and humidity value control blower fan.When the temperature in pharmaceutical factory workshop surpassed or is lower than the default temperature, air-conditioning equipment can be opened or close in system automatically, and the air-conditioning unit adopts the variable frequency control mode.