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In modern greenhouse temperature and humidity monitoring systems , the types and structures of temperature and humidity sensors vary widely. The temperature and humidity sensors used in different crops and different greenhouse monitoring systems are also particular about it. When we develop a plan, we should reasonably select the temperature and humidity sensors according to the specific measurement object, measurement purpose, and measurement environment. This is our plan development. The first problem to be solved.
Therefore, when we develop a plan to select a temperature and humidity sensor , we need to understand the general measurement principles of temperature and humidity sensors , so that it is more beneficial for us to choose a suitable temperature and humidity sensor that can meet the needs. Once the temperature and humidity sensor is determined, the matching equipment scheme can be easily determined. The quality of the system depends to a large extent on the selection of the temperature and humidity sensor .
So how should we choose a suitable temperature and humidity sensor, the following editor will teach you some methods of temperature and humidity sensor selection:
1.Determine the type of temperature and humidity sensor according to the measured object and the measurement environment
In the greenhouse monitoring system, to measure crops, on-site environment, or soil environment, the first thing to consider is the temperature and humidity sensor of the measurement principle. This requires analysis of many factors to determine the sensor in the solution. s Choice. According to the characteristics of the measured physical quantity and the use conditions of temperature and humidity sensors, there are some practical problems: the size of the temperature and humidity range; the volume requirements of the temperature and humidity sensor installation location; the use of a contact sensor or a non-contact sensor; a wired or Wireless sensors ; sensor accuracy requirements; sensor process requirements; sensor prices, etc. are all factors to consider.
2.Temperature and humidity sensor sensitivity
In general, within the linear range of temperature and humidity sensors, users hope that the higher the sensitivity, the better, which is more conducive to the monitoring of environmental changes. However, it should be noted that if the temperature and humidity sensor has high sensitivity, it is easy to be confused with unrelated external signals, which will affect the measurement accuracy after the signal is amplified. Therefore, the temperature and humidity sensor should have a high signal-to-noise ratio to minimize interference signals.
3.Temperature and humidity sensor stability
The stability of the temperature and humidity sensor is affected by factors such as the structure of the sensor and the environment in which the sensor is used. Therefore, if we want to make the temperature and humidity sensor have good stability, the sensor should have strong environmental adaptability. This requires that before selecting a temperature and humidity sensor, we should understand its use environment, and choose a suitable temperature and humidity sensor according to the use environment, or take appropriate protective measures to reduce the impact of the environment on the stability of the sensor.
4.Temperature and humidity sensor accuracy
Accuracy is an important performance indicator of the sensor, and it is related to the measurement accuracy of the entire temperature and humidity monitoring system . The higher the accuracy of the temperature and humidity sensor, the more expensive it is, so when we choose the temperature and humidity sensor, the accuracy only needs to meet the accuracy requirements of the entire temperature and humidity monitoring system, and it does not have to be too high.
Chengdu Xinxin Electronic Technology Co., Ltd. adheres to the concept of independent research and development and independent design in the design of temperature and humidity sensors. Keeping pace with the times, pioneering and innovative, the X2W850-H1 wireless temperature and humidity sensor is designed to meet the needs of users in terms of performance.
July 29, 2015
Chengdu Xinxin Electronic Technology Co., Ltd. Editorial Department
Editor: Little Devil in Gourd