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Portable multipath automatic instrument for detecting moisture, air pressure and temperature of soil

A soil moisture, portable technology, applied in the field of air pressure and temperature measurement, soil moisture content, can solve the problem of not having data Chinese character display man-machine interface and communication interface, not having a large amount of data storage and automatic recording function, not having low voltage Low-power portable functions, etc., to achieve the effect of long-term storage, convenient expansion, and compact structure

Inactive Publication Date: 2004-03-17
XIAN UNIV OF TECH
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Problems solved by technology

[0002] The existing pressure and temperature detection devices in industrial applications are all secondary instruments that detect pressure or temperature separately, and mainly have the following shortcomings: the function is relatively single, and they do not have a large amount of data storage and automatic recording functions, and do not have data Chinese characters Display man-machine interface and communication interface, do not have low-voltage and low-power portable functions, or do not have the above functions at the same time
These defects greatly limit the application of existing pressure and temperature detection devices in various conditions of industrial and scientific research experiment sites

Method used

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  • Portable multipath automatic instrument for detecting moisture, air pressure and temperature of soil
  • Portable multipath automatic instrument for detecting moisture, air pressure and temperature of soil
  • Portable multipath automatic instrument for detecting moisture, air pressure and temperature of soil

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Embodiment Construction

[0016] Accompanying drawing is the specific embodiment of the present invention.

[0017] Below in conjunction with accompanying drawing, content of the present invention is described further:

[0018] refer to figure 1 As shown, the portable multi-channel soil moisture, air pressure, and temperature automatic detector is characterized in that it includes a set of tensiometers 0, the pressure output terminals of the tensiometers are connected to a set of piezoresistive differential pressure sensors 1a for measuring vacuum, and a set of pressure gauges 1a for measuring vacuum. The piezoresistive differential pressure sensor 1b of air pressure, the output terminals of the piezoresistive differential pressure sensors 1a and 1b are respectively connected to a group of high-precision amplifiers 2, and the signal output terminals of each high-precision amplifier 2 are connected to a multiplexer 3, and the multi-channel The output terminal of the device 3 is connected to an analog-t...

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Abstract

The invention discloses a multi-purpose portable automatic detecting instrument for soil moisture, air pressure, and temperature, which comprises a soil moisture content signal detection input conversion portion, air pressure signal detection input conversion portion, temperature signal detection input conversion portion, push-button portion, graph dot matrix mode liquid crystal display portion, high capacity nonvolatile storage portion, real time clock portion, power supply management portion, communication interface portion and microprocessor portion, wherein the sensor and the observing and control portion form a set of portable temperature and pressure detection and recording apparatus.The advantages of the apparatus by the invention are high measurement accuracy and low power consumption, it is suitable for the on-site data acquisition in various industrial and scientific research fields.

Description

1. Technical field [0001] The invention relates to a portable multi-channel soil moisture, air pressure and temperature automatic detector used in industrial measurement and control, agricultural and ecological science and technology research, which is suitable for measuring soil water content, air pressure and temperature in soil characteristic measurement. 2. Background technology [0002] The existing pressure and temperature detection devices in industrial applications are all secondary instruments that detect pressure or temperature separately, and mainly have the following shortcomings: the function is relatively single, and they do not have a large amount of data storage and automatic recording functions, and do not have data Chinese characters Display man-machine interface and communication interface, do not have low-voltage and low-power portable functions, or do not have the above functions at the same time. These defects greatly limit the application of existing p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24G01N35/00
Inventor 张建丰华建平王志林
Owner XIAN UNIV OF TECH
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