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Soil moisture wireless measuring apparatus

A technology of soil moisture and wireless measurement, applied in the field of measurement, can solve the problems of not considering wireless transmission, not considering the problem of soil compaction, not suitable for long-distance unmanned monitoring system, etc., to achieve easy portability, low power consumption, Inexpensive effect

Inactive Publication Date: 2011-04-13
BEIJING FORESTRY UNIVERSITY
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Obviously, directly applying the cone index in isolation cannot truly and objectively evaluate the degree of soil compaction.
[0007] 3. At present, the soil moisture sensors sold on the market are basically single-point sensors, and the application mainly relies on wired networking, which is not suitable for the needs of long-distance unmanned monitoring systems
[0008] From the above analysis, it can be seen that the existing soil moisture sensors only measure the single parameter of soil moisture content, and neither consider the soil compaction problem that has a significant impact on soil moisture content, nor consider the wireless transmission problem
It is not yet possible to integrate the two important parameters of soil compaction and soil water content into one, and simultaneously measure and realize the unmanned real-time detection of soil water content in the field.

Method used

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Embodiment Construction

[0038] The technical solution is described in detail below with examples.

[0039] refer to figure 1 , The soil moisture wireless measurement device of the present invention includes two parts of a plurality of wireless sensing devices 2 and a wireless setting device 1 connected thereto for detection operations, both of which are powered by a 9V battery. The wireless sensing device 2 is used to measure the soil moisture content, temperature and compaction degree, and the wireless setting device 1 is designed as a hand-held instrument, refer to Figure 13 , the handheld device is equipped with "on / off", "setting", "measurement", "delete" and 4 selection keys, which are used to set the parameters of the wireless sensing device, read and display the measurement of the wireless sensing device result. The hand-held device is small in size, easy to carry around, low in power consumption, rechargeable, and does not need to be equipped with a large number of spare batteries.

[004...

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Abstract

A soil moisture wireless measuring device comprises two parts, namely a wireless sensing device and a wireless setting device which is connected with the wireless sensing device and is used for detection operation. The wireless sensing device which is used to measure soil water content, soil temperature and soil compactness comprises an impedance converter, a pressure sensor, a temperature sensor, an information acquisition device, a second wireless communication module and a CPU processor. The wireless setting device which is designed as a hand held type instrument comprises a central controller, and a keyboard input module, a display module, a memory module and a first wireless communication module respectively connected with the central controller. The impedance converter consists of three parts, namely a signal source, a transmission line and a probe. The soil moisture wireless measuring device provided by the invention has the advantages that: the device is capable of measuring the soil temperature, soil compactness and soil water content simultaneously; the device has the performances of high bandwidth, high linearity and low power consumption; the device facilitates the realization of the real-time detection of field soil water content with brief design, simple operation and portability.

Description

technical field [0001] The invention relates to the field of measurement technology, in particular to a wireless soil moisture measurement device. Background technique [0002] At present, in the case of increasingly scarce water resources, water conservation and efficient use of water are more and more universally valued by governments all over the world. Promoting water-saving technology and equipment is an effective way to save water resources and improve the utilization rate of water resources. As a large agricultural country in the world, it is particularly important to seek efficient rapid soil moisture measurement technology for water-saving irrigation. China's population accounts for 22% of the world's total, but fresh water resources only account for 8% of the world's total. The per capita water resources are only 2300m3 / year, which is only equivalent to 1 / 4 of the world's average. It is the world's poorest water resource per capita. One of 13 countries. On the o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24
Inventor 赵燕东冯斌白陈祥王海兰
Owner BEIJING FORESTRY UNIVERSITY
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