In 2019, in order to effectively monitor the pollution discharge of enterprises in the jurisdiction, environmental protection departments at all levels have begun to adopt pollution source online monitoring systems to monitor the discharge of sewage, exhaust gas, noise and the operation of environmental protection facilities of relevant enterprises in real time. The pollution discharge situation of each enterprise is transmitted to the pollution source online monitoring system platform of the environmental protection department through the wide area network, so that the environmental protection department can conduct centralized and real-time supervision of the pollution discharge situation of the enterprise, which effectively improves the supervision efficiency and effectiveness, and greatly improves the management intelligence Degree of chemistry.
System Components
A complete pollution source online monitoring system consists of two parts. One is a software monitoring platform running in the environmental protection department. This platform receives field data and can save and display real-time emission data of various enterprises. It includes basic alarms, statistics and reports for exceeding standards. Features. The second is related monitoring instruments and data acquisition and transmission instruments installed in the sewage outlets of various enterprises. These instruments and equipment automatically measure and collect pollutant data and report the data to the pollution source online monitoring platform.
First of all, exhaust gas monitors, monitoring instruments and data acquisition and transmission instruments (data acquisition instruments) need to be installed at the discharge outlet site. Due to the harsh environment in these places, the requirements for equipment and equipment are very high, so the equipment must be industrial grade. And have a certain degree of protection;
Secondly, the acquisition accuracy and acquisition capabilities of the data acquisition and transmission instrument can meet the requirements, and it has a variety of communication methods to meet the requirements of normal data reporting under different conditions;
Third, the stability and reliability of each instrument and equipment should be good to minimize maintenance costs;
The monitoring of exhaust gas is generally collected: flue gas flow rate, concentration, and the content of pollutants such as hydrogen sulfide, carbon dioxide, ammonia, and sulfur dioxide. The commonly used method is to install a set of CEMS flue gas continuous online monitoring system and a data acquisition and transmission instrument (data acquisition instrument). The flue gas online monitoring system analyzes the pollutant data, and the data acquisition and transmission instrument is responsible for collecting and reporting the pollutant data.
Because the geographical location of pollution sources is wide and scattered, on-site data can only be automatically reported by remote communication. Commonly used communication methods are divided into public network and private network, wired network and wireless network. The public network refers to the Internet public network. The pollution source online monitoring platform is connected to the public network. The data collection and transmission instrument can enter the public network through wired or wireless means, and connect to the monitoring platform to report data to the monitoring platform. Private network refers to VPN virtual local area network or VPDN virtual dial-up network. This network system is isolated from the public network, and is relatively closed and independent, thus providing relatively high system security. The monitoring platform and the data acquisition and transmission instrument are in the same virtual network and communicate with each other. At present, the more widely used communication methods are Ethernet, ADSL dial-up network, GPRS/CDMA wireless communication methods, etc. Of course, there are some other communication methods that are also optional, such as SMS text messaging, PSTN telephone dial-up network, 4G wireless network, Optical fiber network, satellite communication network, etc.
System requirements for industrial panel computers:
The environmental conditions of the sewage outlets of the pollution sources of enterprises are relatively harsh, with small space, a lot of dust, and large temperature differences between day and night. Most information points are located in remote areas, and manual maintenance and maintenance of equipment cannot be arranged.
This requires that the data acquisition instrument hardware equipment must adapt to harsh environment operation, have low temperature and high temperature resistance characteristics, ensure the product performance of the system's low temperature operation, and have a highly integrated multi-serial hardware structure. And customers require that the equipment must have an open hardware architecture that can run application software developed under different operating systems and platforms, thereby maximizing the protection of hardware equipment investment and avoiding duplication of investment.
The fan is the weakest point of failure in harsh environments, and the fanless feature of the Kollard industrial panel computer greatly improves the stability of the machine.
The conduction heat dissipation of the Anrecson industrial panel computer has good airtightness, which can effectively isolate dust; reduce downtime caused by the oxidation of corrosive gas on the signal conduction point, and reduce maintenance costs; suitable for outdoor monitoring points in harsh environments , Used in unmanned occasions.
The ultra-low power consumption and wide voltage input characteristics of Anrecson industrial tablet PCs are suitable for outdoor power supply characteristics; it also saves resources; it has an audio output port and provides an alarm function.
