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Manufacturer of distributed fiber optic temperature monitoring system for granaries

The granary can use a professional distributed fiber optic temperature measurement system, which is not a cheap and low-quality granary temperature measurement device. Please note!

The DTS distributed fiber optic temperature measurement system can be applied to monitor the surface temperature of power cables and the winding temperature of large dry-type transformers; Leakage monitoring of oil and gas pipelines; Dam leakage monitoring; Temperature monitoring of grain depots and granaries; Temperature monitoring of coal mine silos and coal conveyor belts; Temperature monitoring of certain specific spatial environments.

 

Why do granaries need temperature and humidity monitoring systems

When using the granary, there may be situations where the temperature inside the granary is too high, which can cause the food inside the granary to spoil. Currently, the temperature inside the granary cannot be detected, which is not conducive to storage. When using this temperature measuring granary, the thermometer is placed inside the granary. When the temperature measured by the thermometer exceeds the limit, the connected alarm will sound an alarm to remind the staff. The main parameters for safe storage of grain in grain depots are the temperature and humidity of the grain depot. During the normal storage process of grain, the moisture content is generally below 12%, which is a safe state and does not cause temperature fluctuations. Once the moisture content of the grain reaches over 20% due to water ingress, condensation, etc. in the grain depot, the grains become damp, the embryo sprouts, and metabolism accelerates, resulting in a sense of respiration. This sudden increase in local grain temperature will inevitably cause a “fever” and mold in the grain, and may form a chain reaction, causing irreversible losses.

In order to ensure the timely supply of grain, a large amount of grain is stored in the granary for emergency needs. However, a large amount of grain is stored in the granary, and the quality of the accumulated grain is difficult to guarantee. The quality of the grain is easily affected by the temperature of the granary, leading to spoilage and mold. In order to ensure the quality of the grain, granary personnel will insert many temperature measurement cables into the grain pile to detect the temperature of grain at different depths and areas. To visually observe the temperature measured by the temperature measurement cable, granary personnel need to carry a handheld thermometer and insert each temperature measurement cable into the handheld thermometer in order to understand the temperature of all grains in the grain pile. Generally, to ensure understanding of the temperature situation of all grains in the grain pile, There will be at least dozens, or even hundreds, of temperature measuring cables inserted into grain piles. The existing temperature measurement method is very cumbersome to operate, requires a large amount of labor, and requires multiple testing points, otherwise the testing error will be relatively large. Moreover, when using the existing testing equipment, pulling and plugging the temperature measurement cable back and forth can easily cause damage to it, leading to a decrease in its accuracy in temperature measurement and poor effectiveness in use.

Real time and accurate monitoring of the temperature in granaries is a necessary technical means to ensure the quality of grain storage, and it is also a necessary grain situation information for national macro grain decision-making. Real time monitoring of temperature in grain depots and timely acquisition of information on grain quality are important guarantees for food security. However, currently the main sensing systems used for grain monitoring are mechanical or electronic, which have shortcomings such as multiple physical nodes, high failure rates, poor stability, and poor resistance to harsh environments. Therefore, FJINNO independently developed and designed a distributed fiber optic temperature monitoring system for grain silos, which is based on a temperature monitoring fiber optic sensor.

The DTS distributed fiber optic granary temperature monitoring system uses fiber optic as the sensing and transmission medium for granary temperature and strain information. The distributed fiber optic is laid throughout the entire granary and can measure the temperature and strain distribution along the fiber optic. As the fiber optic grows and the number of measurement points increases, the cost of temperature monitoring and unit sampling points is greatly reduced. This is also a significant advantage of this system compared to other temperature sensors. The distributed fiber optic system not only has good resistance to electromagnetic interference and harsh environments, but also can scan the internal temperature of the granary in a distributed manner, provide more accurate temperature distribution of the granary, and provide more comprehensive monitoring data of grain conditions. At the same time, it also has sufficient sensitivity to achieve accurate measurement of granary temperature. The distributed fiber optic temperature measurement system has the characteristics of high measurement accuracy, no physical nodes, high reliability, and long service life, which is a feasible technical approach to improve the scientific and technological level of grain monitoring.

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