Another parameter that can be controlled and set up by the end user is the limit regarding each monitor value, so if the technical flow changes, implying new normal working conditions when it comes to temperature and pressure, the changes inside the S. The same idea can be developed for the mobile networks using specialized gsm equipment; having installed LabVIEW on a PDA, the user can control remotely the system by running the application on the mobile phone; also all the error messages from the installation will be sent by sms to the end users mobile phone in real time. Each level regarding the measurement and monitoring of the parameters has its own page, where the end user can visualize the values both on graphic and as a simple value. The information from the sensors is in form of mAmps regarding temperature and Volts for pressure so the WiTag communicates to the server the data, and there, with the program done in LabVIEW, takes place a conversion after a specific formula from mAmps to the temperature measured in Celsius degrees and from Volts to bars. Supervisory Control And Data Acquisition system for an industrial distillation column. The PCB size is 48 mm x 65 mm and has the circuitry described in Fig. All the communications are reliable, with no perturbations, even if all the Witags are in the same area, because of the UDP protocol.
All the communications are reliable, with no perturbations, even if all the Witags are in the same area, because of the UDP protocol. Each level regarding the measurement and monitoring of the parameters has its own page, where the end user can visualize the values both on graphic and as a simple value. This system is working in real time, all the WiTags transmit information simultaneously and the soft is processing the data accordingly, being possible to detect more than two errors regarding different parameters and different column levels simultaneously. It also requires minimum hardware equipment, two or more S. Remote Control For realizing the control of the distillation column and the industrial process, proper actuators, for automation, must be mounted on the installation and LabVIEW must be used for controlling the WiTags, their digital Outputs. In this application the column is supposed to have four physical levels that are running at different temperatures and pressures, this structure being the most used in the chemical domain. The PCB size is 48 mm x 65 mm and has the circuitry described in Fig. This reason causes also the limitation of the number of measurement points. The information from the sensors is in form of mAmps regarding temperature and Volts for pressure so the WiTag communicates to the server the data, and there, with the program done in LabVIEW, takes place a conversion after a specific formula from mAmps to the temperature measured in Celsius degrees and from Volts to bars. The problem with the variables is controlling them for maintaining their values in the proper limits. Sensor measurement operation is controlled by an external 32 KHz oscillator. After retrieving the data from the two sensors one that measures the temperature and the other one that measures the pressure , each WiTag communicates wireless with an Access Point and a router after the Access Point for routing the data to the specified server through the Internet or the Local Network, or simply the WiTag communicates directly with a wireless router like shown in Fig. In present, the trend is to develop new technologies for accomplish all of the purposes reminded earlier in the paper. User defined firmware, like sensor drivers, can be downloaded into this memory. For controlling the system, the user can select with which WiTags he wants to work, to visualize information from and to send information to, by completing accordingly the Tag MAC List, and the soft will realize the selection automatically on the MAC field of the WiTags. These Inputs are standard for these kind of sensors, especially when used in industrial domains and applications. In this paper, the authors will first describe the wireless tag from the technical point of view, afterwards, the S. The node is able to read a sensor and send data to the network by using an IP — based application protocol such as UDP. He can see the values for both the temperature and pressure regarding each level of the column, the status for the monitor parameters on each level Normal value — Green 4 The application that will be presented in this paper monitors and also controls the temperature and pressure retrieved in each level in the interior of the column. The G2C can be integrated into Wi-Fi sensor tags that lower the cost of ownership and meet the needs of a variety of industries including consumer electronics, pharmaceuticals, chemical manufacturing, cold chain and more. Both the temperature and pressure sensor communicate with the WiTag through a cable with a high protection degree, the first sensor for measuring the temperature is connected with the WiTag using the 4 — 20 mA Input, and for the second sensor that measures pressure the 0 — 10 V Input is used. The cost for implementing such a S. This includes the processor with clocks and power circuitry and the RF section with an onboard antenna. The CPU incorporates full
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