Online detection sensor for available phosphorus in rice field soil

Abstract

The utility model discloses an on-line detection sensor for available phosphorus in rice field soil. The on-line detection sensor mainly comprises a cylinder cover, a control cylinder body and a detection probe, the barrel cover comprises a switch, a lithium battery charging port and a circuit board fixing hole; the detection probe comprises a detection probe, a hexagon nut and a detection connection PCB. The control cylinder comprises a detection circuit board and a lithium battery; the detection circuit board comprises a main control chip, a signal generation circuit module, a signal acquisition circuit module, a wireless communication module, a power supply module and a built-in antenna. The main control chip adopts a high-performance STM32F4 series single chip microcomputer; and the wireless communication module adopts a LoRa wireless network for transmission. The device has the characteristics of low power consumption, simplicity and convenience in operation, rapidness in detection and the like, is suitable for occasions needing field on-line detection on the available phosphorus in the rice field soil, and can rapidly obtain the information of the available phosphorus in the rice field soil.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of agricultural information detection, more specifically relates to soil available phosphorus detection and agricultural internet of things information field, relate to a kind of paddy field soil available phosphorus online detection sensor. BACKGROUND

[0002] Unreasonable development and utilization of paddy field soil resources pollute and destroy paddy field soil, resulting in the decline of paddy field soil fertility.

[0003] Soil available phosphorus is one of the important components of paddy field soil nutrients, which plays an important role in paddy field soil fertility and rice growth and development. Understanding the information of paddy field soil available phosphorus is of great significance to improve paddy field soil fertility.

[0004] The existing methods for detecting the content of paddy field soil available phosphorus include sodium bicarbonate method, molybdenum blue colorimetric method and spectral analysis technology, but these methods have long detection time, complex operation, high cost and require professional personnel for detection, which cannot meet the demand of on-site online detection and rapid detection of paddy field soil available phosphorus.

[0005] Therefore, the utility model provides a kind of paddy field soil available phosphorus online detection sensor to realize the on-site online detection and rapid detection of paddy field soil available phosphorus. UTILITY MODEL CONTENT

[0006] In view of the existing problems, the utility model provides a kind of paddy field soil available phosphorus online detection sensor.

[0007] The technical scheme of the utility model is:

[0008] A kind of paddy field soil available phosphorus online detection sensor, it is used to detect paddy field soil available phosphorus information online, including: cylinder cover, control cylinder and detection probe;The cylinder cover is installed and connected on the upper end of the control cylinder;The detection probe is connected to the bottom end of the control cylinder;The cylinder cover includes switch, lithium battery charging port and detection circuit board fixing hole;The control cylinder includes detection circuit board and lithium battery;The detection probe includes detection probe, hexagon nut, detection connection PCB board.

[0009] The upper part of the cylinder cover is provided with a recessed part, and the switch, lithium battery charging port and detection circuit board fixing hole are embedded therein.

[0010] The recessed part of the battery built-in control cylinder is installed, and the detection circuit board is installed on the inner side of the cylinder wall and fixed by the supporting plate and the detection circuit board fixing hole.

[0011] The detection circuit board takes STM32 as a device master control chip, and the peripheral circuit includes four modules: a signal generation module, a signal detection module, a wireless communication module and a power module, and the functions of the modules are as follows: the signal generation module and the signal detection module constitute a spectrum acquisition part of the detection sensor, and are responsible for acquiring effective phosphorus information of the paddy field soil; the wireless communication module is responsible for transmitting the acquired information to an upper computer; and the power module is responsible for providing power for the detection sensor.

[0012] The detection probe is connected with the detection circuit board through a detection signal line.

[0013] The detection probe has four 304 stainless steel needles connected with the PCB board through a hexagonal nut and the detection probe.

[0014] The built-in antenna is electrically connected with the wireless communication module, and wireless transmission is performed by using a LoRa network.

[0015] Preferably, the master control chip adopts an STMF4 series high-performance single-chip microcomputer.

[0016] Preferably, wireless communication can be performed through the built-in antenna, and data can be finally uploaded to a target server for storage.

[0017] Preferably, the probe adopts a corrosion-resistant 304 stainless steel needle.

[0018] In summary, the beneficial effects of the utility model are:

[0019] 1. The detection sensor has a compact structure design and is not easy to be damaged, and has small disturbance to crops.

[0020] 2. A wireless transmission network can be automatically established during work, and the data transmission distance is improved.

[0021] 3. The utility model can meet the detection precision of effective phosphorus in paddy field soil, has the characteristics of rapid monitoring, and can meet the real-time online detection of effective phosphorus information in paddy field soil.

[0022] 4. The detection sensor has the characteristics of fast response speed, strong real-time performance, reliable work, simple operation, automatic control and the like, is suitable for high real-time detection requirement and online monitoring occasions, and is an effective online detection sensor for effective phosphorus in paddy field soil. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a whole structure schematic view of the detection sensor of the utility model.

[0024] Figure 2 It is an internal planar view of the detection sensor of the utility model.

[0025] Figure 3The utility model discloses a detection circuit board hardware design block diagram.

[0026] In the drawing: 1. barrel cover, 2. control cylinder, 3. detection probe, 4. detection probe, 5. detection circuit board fixing hole, 6. switch button, 7. lithium battery charging port, 8. detection circuit board, 9. lithium battery, 10. detection signal line, 11. hexagonal nut, 12. detection probe connection PCB board, 13. built-in antenna, 14. supporting plate. DETAILED DESCRIPTION

[0027] Now combine the attached Figure 1 The embodiment of the utility model is described in detail, and the utility model is further described in detail.

[0028] A kind of paddy field soil available phosphorus on-line detection sensor, it is used to on-line detect paddy field soil available phosphorus information, including: barrel cover 1, control cylinder 2 and detection probe 3;The barrel cover 1 is installed and is connected on the control cylinder 2 top end;The detection probe 3 is connected to the control cylinder 2 bottom end;The barrel cover 1 includes detection circuit board fixing hole 5, switch button 6 and lithium battery charging port 7;The control cylinder 2 includes detection circuit board 8 and lithium battery 9;The detection probe 3 includes detection probe 4, hexagonal nut 11 and detection probe connection PCB board 12;The detection circuit board 8 includes signal generation module, signal detection module, wireless communication module and power module.The built-in antenna 13 is connected on the wireless communication module of detection circuit board 8.

[0029] The upper portion of the barrel cover 1 is provided with a recessed portion, and the detection circuit board fixing hole 5, the switch button 6 and the lithium battery charging port 7 are embedded therein.

[0030] The control cylinder 2 is provided with a recessed portion for installing the lithium battery 9, and the detection circuit board 8 is installed and fixed in the control cylinder through the detection circuit fixing hole 5 and the supporting plate 14.

[0031] The detection circuit board 8 includes a main control chip, a signal generation circuit module, a signal acquisition circuit module, a wireless communication module, a power module and a built-in antenna 13.

[0032] The detection probe 3 is connected to the detection circuit board 8 through the detection signal line 10.

[0033] The detection probe 4 is connected to the detection probe 3 through the hexagonal nut 11 and the detection probe connection PCB board 12 by four 304 stainless steel needles.

[0034] The built-in antenna 13 is electrically connected with the wireless communication module, and adopts LoRa network for wireless transmission.

[0035] The use steps of the paddy field soil available phosphorus on-line detection sensor are as follows:

[0036] a, vertically insert the probe 3 into the rice field soil to be measured, so that the probe 4 is just completely covered by the rice field soil;

[0037] b, press the top switch button 6, and the detection sensor starts to work;

[0038] c, start to detect the effective phosphorus in the rice field soil, and the detection value is fed back to the detection circuit board 8;

[0039] d, repeat step d, and detect the environment multiple times to ensure the reliability of the data;

[0040] e, the detection circuit board 8 takes the average value after the algorithm of checking and validity judging of the data, and sends the effective phosphorus data of the rice field soil to the remote service base station through the wireless communication module;

[0041] f, set the sampling interval time according to the needs, repeat steps c-e, and realize real-time and online detection of the data.

[0042] The detection circuit board takes STM32F4 as the main control chip, and the peripheral circuit includes four modules: a signal generation module, a signal detection module, a wireless communication module and a power module, and the functions of each module are as follows: the signal generation module and the signal detection module constitute the frequency spectrum acquisition part of the detection sensor, and are responsible for acquiring the effective phosphorus information of the rice field soil; the wireless communication module is responsible for sending the acquired information to the upper computer; and the power module is responsible for providing power for the detection sensor.

[0043] The above-described embodiments described by the drawings are exemplary and are only used to explain the utility model, and cannot be explained as the limitation of the utility model; for the skilled in the art, the embodiments can be modified and parameter replaced without departing from the principles and spirits of the utility model, and the scope of the utility model is determined by the appended claims and equivalents.

Claims

1. An online sensor for detecting available phosphorus in paddy soil, used for online detection of available phosphorus information in paddy soil, characterized in that: Including the cylinder cover (1), the control cylinder (2) and the detection probe (3), the cylinder cover (1) is installed and is connected on the control cylinder (2) top end, the detection probe (3) is connected on the control cylinder (2) bottom end, the cylinder cover (1) includes detection circuit board fixed hole (5), switch button (6) and lithium battery charging port (7), the control cylinder (2) includes detection circuit board (8) and lithium battery (9), the detection probe (3) includes detection probe (4), hexagonal nut (11), detection probe connection PCB board (12).

2. The online sensor for detecting available phosphorus in paddy field soil according to claim 1, characterized in that: The upper part of the cylinder cover (1) is provided with a recessed part, and the detection circuit board fixed hole (5), the switch button (6) and the lithium battery charging port (7) are embedded therein.

3. The online sensor for detecting available phosphorus in paddy field soil according to claim 1, characterized in that: The control cylinder (2) is provided with a recessed part for installing the lithium battery (9) therein, and the detection circuit board (8) is installed on the inner side of the cylinder through the detection circuit board fixed hole (5) and the supporting plate (14).

4. The online sensor for detecting available phosphorus in paddy field soil according to claim 1, characterized in that: The detection circuit board (8) includes a main control chip, a signal generating circuit module, a signal collecting circuit module, a wireless communication module, a power module and a built-in antenna (13).

5. The online sensor for detecting available phosphorus in paddy field soil according to claim 1, characterized in that: The detection probe (3) is connected with the detection circuit board (8) through a detection signal line (10).

6. The online sensor for detecting available phosphorus in paddy field soil according to claim 1, characterized in that: The detection probe (4) is connected with the detection probe (3) through the hexagonal nut (11) and the detection probe connection PCB board (12) by four 304 stainless steel needles.

7. The online sensor for detecting available phosphorus in paddy field soil according to claim 4, characterized in that: The built-in antenna (13) is electrically connected with the wireless communication module, and adopts LoRa network for wireless transmission.

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