Temperature, humidity and pH detection control system for use in improvement of saline-alkali soil

Abstract

The invention provides a temperature, humidity and pH detection control system for use in improvement of saline-alkali soil. The system comprises an operational amplifier, resistors, a capacitor and a diode which are connected through a lead. The operational amplifier is an 8-pin operational amplifier UA of OPA129LM type, including 1 to 8 pins; the second pin of the operational amplifier UA is an opposing input end connected with one end of a resistor R1; the other end of the resistor R1 is grounded; the second pin of the operational amplifier is further connected with one end of a resistor R4; the other end of the resistor R4 is connected with the eighth pin of the operational amplifier UA. The system has the advantages that temperature, humidity and pH can be precisely measured to third decimal places, measuring precision is high, and data are highly indicative; a temperature-humidity probe and a pH probe are provided, so that a sampling detector does not need to carry two devices again to sample the pH, the temperature and the humidity, equipment is simple, operating is facilitated, carrying is facilitated, and stability is high; a 24V power supply lower than the human safety voltage is utilized, so that running is stable, and system halt does not occur.

Description

technical field [0001] The invention relates to the field of mechanical and electronic science and technology, in particular to a detection device for improving saline-alkali land, specifically a temperature, humidity and pH detection and control system for improving saline-alkali land. Background technique [0002] Saline-alkali land improvement is one of the projects vigorously promoted in my country at present, and it is the most important problem to solve the cultivated land at present. As the coastal saline-alkali land is difficult to control, many companies and units continue to research and develop saline-alkali land treatment. In the process of saline-alkali land treatment, soil pH detection and temperature and humidity detection are currently commonly used detection indicators. For the collection of these indicators, most of them use soil, Moisture pH pH detector, temperature and humidity detector, etc. However, due to the influence of saline-alkali environmental fa...

AI Technical Summary

Problems solved by technology

As the coastal saline-alkali land is difficult to control, many companies and units continue to research and develop saline-alkali land treatment. In the process of saline-alkali land treatment, soil pH detection and temperature and humidity detection are currently commonly used detection indicators. For the collection of these indicators, most of them use soil, Moisture pH pH detector, temperature and humidity detector, etc. However, due to the influence of saline-alkali environmental factors, the current detection device is cold in winter and hot in summer, and the equipment and equipment often crash, resulting in the interruption of the detection data and cannot be read normally. Retesting the soil after turning off the machine and starting it up is laborious and laborious during the testing process, resulting in a lot of repetitive work and low efficiency. In addition, the existing detectors have low detection accuracy, generally 1 or 2 digits after the decimal point. For some high-demand If the crops cannot accurately control the salinity and pH value of the soil, it will cause plant death, crop yield reduction, etc.

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