Tea Automation, Fermentation Automation, Tea Quality Control, Electronics automation in Tea, Electronics in Tea.
Quality control in tea has becomes an increasing demand of the industry. The increased cost of production and labor also calls for taking measure to increase production without compromising on the quality. Both these goals can be achieved by application of electronics in tea. Fermentation process is one of the most time consuming and the most critical process in the manufacturing of finished tea. Measuring various production parameters using various electronic sensors and using a PLC control system leads to uniform production quality, increased production and reduction in cost due to elimination of labor.
During the fermentation process different parameters monitored are
- Temperature of tea on each modules
- %RH – Humidity measurement in the humidification chamber
- Travel Time – how much time it takes for the tea to reach the end of the fermentation belt.
These parameters are continuously monitored using sophisticated electronic sensors and the data is logged in an industrial PC using RS 485 communication technique. An MIS system is also developed for generating reports and graphs of the data that is collected. This way a very tight monitoring of the production parameters is possible. The control logic of the system in built in to the PLC and it takes the control actions when the parameters are above or below the specified limit.
The profile curve of fermentation process can be drawn on the computer and the same profile can be applied to the PLC. At any time the user can see the expected and the actual profile of the quality being fermented. All the standard profiles can be saved in the computer and at a later time any of the previous profiles can be loaded to ensure that the uniform production quality is obtained.