Miniature crop inorganic ion signal in-vivo detection hardware system

Abstract

The utility model relates to an in-vivo detection hardware system for inorganic ion signals of micro crops. The in-vivo detection hardware system comprises an acquisition module and a Bluetooth module, the acquisition module comprises a main control chip and a multiplexer; the main control chip is connected with the Bluetooth module through a first serial port of the main control chip, and the Bluetooth module is connected with an upper computer through Bluetooth; the main control chip is also connected with the multiplexer through a second serial port and an AD acquisition port of the main control chip; the multiplexer is connected with a plurality of pre-amplification circuits, and each pre-amplification circuit detects potential type signals of crop ions in vivo and in situ through an all-solid-state ion selective electrode. The device can be widely applied to the field of crop monitoring.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of micro-crop inorganic ion signal in-vivo detection hardware systems, belong to crop monitoring field. BACKGROUND

[0002] Na + , Mg2 + , H + And Cl - Inorganic ions such as, growth and development, adversity response, osmotic pressure regulation, signal transduction, cell cycle and cell apoptosis are closely related to crops. Therefore, monitoring the status of these ions in crops in vivo is crucial for crop growth state identification and precision regulation of agricultural production.

[0003] Early detection of ions in plants includes ion chromatography, titration, colorimetry, etc. These methods are not only complex in operation but also cannot be measured in vivo. With the development of detection technology, some devices for in-vivo monitoring of ions in plants have emerged, but most of these devices are expensive and large in size, making them inconvenient for facility agriculture or field work environment, and the domestic rate is low. Therefore, it is necessary to develop a convenient and miniaturized hardware system to meet the actual research needs. SUMMARY

[0004] To solve the problems of low domestic rate and large device size in the existing system, the utility model aims to provide a micro-crop inorganic ion signal in-vivo detection hardware system to realize in-vivo in-situ detection of inorganic ions in crops in facility environment or field, thereby further providing equipment support for precision regulation of agricultural production and agricultural breeding.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A micro-crop inorganic ion signal in-vivo detection hardware system comprises:

[0007] An acquisition module and a Bluetooth module;

[0008] The acquisition module includes a master control chip and a multiplexer;

[0009] The master control chip is connected to the Bluetooth module through its first serial port, and the Bluetooth module is connected to the computer host computer through Bluetooth; the master control chip is also connected to the multiplexer through its second serial port and AD acquisition port;

[0010] The multiplexer is connected to a plurality of preamplifier circuits, and each preamplifier circuit detects the potential signal of crop ions in-vivo in-situ through a solid-state ion selective electrode.

[0011] Further, the acquisition module further comprises a positive power supply circuit, a negative power supply circuit, a crystal oscillator circuit, a reset circuit and a reference circuit.

[0012] The positive power supply circuit and the negative power supply circuit are used to supply power for the acquisition module and the Bluetooth module.

[0013] The crystal oscillator circuit is used as a clock signal source to provide a periodic pulse signal and ensure the synchronization of data transmission and processing.

[0014] The reset circuit is used for resetting.

[0015] The reference circuit is used to provide a potential reference.

[0016] Further, the positive power supply circuit is powered by a rechargeable battery providing a positive power supply, and the negative power supply circuit is powered by another rechargeable battery providing a negative power supply.

[0017] The master control chip converts the voltage of the positive power supply circuit using a first voltage stabilizing chip to provide a working voltage.

[0018] The multiplexer converts the supply voltage of the positive power supply circuit using a second voltage stabilizing chip to provide a working voltage.

[0019] Further, the multiplexer uses an 8-channel multiplexer.

[0020] Further, the preamplifier circuit comprises an operational amplifier, a positive power supply stabilizing chip, a negative power supply stabilizing chip, a voltage reference chip and a voltage lifting and scaling circuit.

[0021] The operational amplifier is used to amplify the signals collected by the all-solid-state ion-selective electrode.

[0022] The positive power supply stabilizing chip and the negative power supply stabilizing chip are respectively used to convert the supply voltage of the positive power supply circuit and the negative power supply circuit to provide voltage supply for the operational amplifier.

[0023] The voltage reference chip provides a voltage reference for the voltage lifting and scaling circuit.

[0024] The voltage lifting and scaling circuit lifts and scales the amplified signals based on the voltage reference provided by the voltage reference chip.

[0025] Further, the operational amplifier uses TP2121 or RS8491 type domestic operational amplifier.

[0026] The voltage lifting and scaling circuit lifts and scales the amplified signals to between 0 and 2.5V based on the stable potential signal provided by the voltage reference chip.

[0027] Further, the Bluetooth module comprises a master Bluetooth module, a slave Bluetooth module and a USB-to-TTL module, the master Bluetooth module and the slave Bluetooth module adopt HC-05 Bluetooth modules.

[0028] Further, the master control chip and the multiplexer are integrated in a PCB board as a main board, and each of the pre-amplification circuits is also integrated in a PCB board as a sub-board.

[0029] Further, the main board, the rechargeable battery and the Bluetooth module are arranged in a plastic waterproof box made of ABS material, and eight 4-core aviation plug female sockets are mounted on the side of the plastic waterproof box, each 4-core aviation plug female socket is connected to the positive power line, the negative power line, the ground wire and the signal line on the main board through a wire.

[0030] Further, each of the sub-boards is arranged in a metal shell, and each of the pre-amplification circuits is connected to a 4-core aviation plug male head through a 4-core cable, each 4-core aviation plug male head is connected to each 4-core aviation plug female socket, and the metal shell is connected to the ground wire through a metal spring sheet welded on the PCB ground wire pad of the pre-amplification circuit.

[0031] The utility model discloses a micro crop inorganic ion signal in vivo detection hardware system, can solve the problem, such as low domestication, unable to miniaturization in the prior art system, realizes the in situ monitoring of crop inorganic ion in the field or facility agriculture, and further realizes the more efficient crop growth state monitoring and agricultural production precision control and other goals.

[0032] The micro crop inorganic ion signal in vivo detection hardware system can be widely applied to the field of plant monitoring. BRIEF DESCRIPTION OF DRAWINGS

[0033] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The detailed description is made with reference to the accompanying drawings.

[0034] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The detailed description is made with reference to the accompanying drawings.

[0035] Figure 1 The micro crop inorganic ion signal in vivo detection hardware system structure block diagram provided by an embodiment of the utility model;

[0036] Figure 2 The micro crop inorganic ion signal in vivo detection hardware system structure block diagram provided by another embodiment of the utility model;

[0037] Figure 3The utility model embodiment provides a single channel preamplifier circuit's connection relation block diagram. DETAILED DESCRIPTION

[0038] In order to make the utility model embodiment purposes, technical scheme and advantage more clearly, below, with the utility model embodiment's drawing, the technical scheme of the utility model embodiment is clearly and completely described. Obviously, the described embodiment is the part embodiment of the utility model, not all embodiments. Based on the described utility model embodiment, all other embodiments obtained by the ordinary skill in the art belong to the range of the utility model protection.

[0039] It is necessary to note that, the term used here is only for describing specific embodiment, and is not intended to limit the example embodiment according to the utility model. As used herein, unless the context clearly indicates otherwise, singular forms are intended to include plural forms, and furthermore, it should be understood that, when the term "include" and / or "comprise" is used in the specification, it indicates the presence of features, steps, operations, devices, components and / or their combinations.

[0040] In some embodiments of the utility model, a kind of micro crop inorganic ion signal in vivo detection hardware system is provided, the system includes acquisition module and bluetooth module. Among them, acquisition module includes main control chip and multiplexer, multiplexer is connected with each preamplifier circuit, and each preamplifier circuit detects the potential type signal of crop ion in situ in vivo through all-solid-state ion selective electrode, and is further processed by uploading to computer host computer software through bluetooth module. The utility model solves the problem of low domestication, cannot be miniaturized in the existing system, realizes in situ monitoring of crop inorganic ion in field or facility agriculture, so as to further realize more efficient crop growth state monitoring and agricultural production precision control and other goals.

[0041] Embodiment 1

[0042] As Figure 1 As shown in the figure, the utility model provides a kind of micro crop inorganic ion signal in vivo detection hardware system. The micro crop inorganic ion signal in vivo detection hardware system 10 can include: acquisition module 100 and bluetooth module 200. Among them, acquisition module 100 includes main control chip 110 and multiplexer 2120, main control chip 110 is connected with bluetooth module 200 by its first serial port 1010, and bluetooth module 200 is connected with computer host computer 3120 by bluetooth;Main control chip 110 is also connected with multiplexer 2120 by its second serial port 1030 and AD acquisition port 1020, multiplexer is connected with several preamplifier circuits 3010, and each preamplifier circuit 3010 detects the potential type signal of crop ion in situ in vivo through all-solid-state ion selective electrode.

[0043] Further, as shown in Figure 2 Further, the acquisition module 100 can further include a positive power supply circuit 1040, a negative power supply circuit 1050, a crystal oscillator circuit 1060, a reset circuit 1070 and a reference circuit 1080. Among them, the positive power supply circuit 1040 and the negative power supply circuit 1050 are used to power the acquisition module 100 and the Bluetooth module 200; the crystal oscillator circuit 1060 serves as a clock signal source, providing periodic pulse signals for digital circuits to ensure the synchronization of data transmission and processing; the reset circuit 1070 can set all circuits and microprocessors to the initial state, ensuring that the system starts running from a known and predictable state, especially when the system fails or abnormally, the reset circuit can be used to reset the system to restore it to a normal working state; the reference circuit 1080 is used to provide a known and stable potential, providing a stable potential reference for measuring the working electrode (WE), such as the all-solid-state ion selective electrode (sensor). This stable potential reference is the key to accurate potential measurement.

[0044] Specifically, the crystal oscillator circuit 1060 can use a 22.1184MHz crystal oscillator.

[0045] Specifically, the reference circuit 1080 can use a silver / silver chloride reference electrode, such as R0302 type silver / silver chloride reference electrode.

[0046] Further, the master chip 110 uses a microprocessor (MCU), preferably a single-chip microcomputer of C8051F06X series, such as C8061F060, C8051F061 and the like.

[0047] Further, the multiplexer 2120 can use an 8-channel multiplexer.

[0048] Further, the master chip 110 and the multiplexer 2120 can be integrated in a separate printed circuit board (PCB), called the mainboard.

[0049] Further, the mainboard can be one of 2-layer, 4-layer or 6-layer PCB.

[0050] Further, the pre-amplification circuit 3010 comprises an operational amplifier, a positive power stabilizing chip, a negative power stabilizing chip, a voltage reference chip, and a voltage lifting and scaling circuit. The operational amplifier is used to amplify the signal collected by the all-solid-state ion-selective electrode; the positive power stabilizing chip and the negative power stabilizing chip are respectively used to convert the voltage of the positive power circuit and the negative power circuit and then provide voltage supply for the operational amplifier; the voltage reference chip provides a stable voltage reference for the voltage lifting and scaling circuit; and the voltage lifting and scaling circuit lifts and scales the amplified signal based on the stable voltage reference provided by the voltage reference chip.

[0051] Specifically, the operational amplifier can be a domestic operational amplifier, for example, a TP2121-type operational amplifier or an RS8491-type operational amplifier. In the present embodiment, an RS8491-type operational amplifier is used. Considering the input signal voltage range (0-2.5V) of the AD collection port 1020 of the master control chip 110 and the range of the ion signal of the crop (about -1V-+1V), the voltage lifting and scaling circuit lifts and scales the amplified signal to 0-2.5V based on the stable potential signal provided by the voltage reference chip.

[0052] Further, each pre-amplification circuit 3010 can be integrated into a separate PCB and connected to the mainboard by a 4-core shielded cable, which is a positive power line, a negative power line, a ground line, and a signal line in sequence.

[0053] Further, the PCB integrating the pre-amplification circuit 3010 is a 4-layer board.

[0054] Further, the positive power circuit 1040 and the negative power circuit 1050 can supply power to the collection module 100 and the Bluetooth module 200 by a rechargeable battery respectively.

[0055] Specifically, in the present embodiment, the positive power circuit is supplied with positive power by a power supply battery, and the negative power circuit is supplied with negative power by another rechargeable battery; the master control chip 110 converts the voltage of the positive power circuit by a first stabilizing chip and then provides working voltage for it. The multiplexer 2120 converts the voltage of the positive power circuit by a second stabilizing chip and then provides working voltage for it.

[0056] Further, the Bluetooth module 200 comprises master and slave Bluetooth modules and a USB-to-TTL module 2110. The master and slave Bluetooth modules can be two HC-05 Bluetooth modules, which realize Bluetooth communication between the collection module 100 and the computer host software 3120.

[0057] Further, the main board, the rechargeable battery and the Bluetooth module are installed in a waterproof box made of ABS material with a proper size, 8 four-core aviation plug female sockets are installed on the side of the waterproof box, and each four-core aviation plug female socket is connected to the positive power line, the negative power line, the ground line and the signal line on the main board through a wire.

[0058] Further, a power key, a positive power charging port, a negative power charging port, a positive power display and a negative power display are installed on the waterproof box made of ABS material.

[0059] Further, the PCB of the pre-amplifier circuit is installed in the metal shell, and the pre-amplifier circuit is connected to the four-core aviation plug male head through a four-core cable with a length of 1.5 meters.

[0060] Further, the metal shell is connected to the ground wire through the metal spring sheet welded on the ground wire pad of the PCB of the pre-amplifier circuit.

[0061] Further, in the actual measurement, any metal shell is connected to an R0302 type silver / silver chloride reference electrode to form a reference circuit. The whole system only needs one reference circuit.

[0062] In combination with the functions and connection relationships of the above components, the micro crop inorganic ion signal in vivo detection hardware system provided by the embodiment of the utility model can realize the following functions: the main control chip 110 of the acquisition module 100 obtains the crop ion information through the sensor connected by the multiplexer 2120 and the pre-amplifier circuit 3010. The main control chip 110 processes the data, and then transmits the processed data to the computer host software 3120 through the Bluetooth module 200, realizes the real-time monitoring of the crop living body in situ, provides a solid foundation for fine agricultural standardization, and the system has the advantages of low cost and small equipment.

[0063] As shown in Figure 3 , one multiplexer can be connected to 8 pre-amplifier circuits, and each pre-amplifier circuit can be connected to one all-solid-state ion selective electrode during crop detection. In order to ensure the effectiveness of the acquisition potential signal, the pre-amplifier circuit is designed as an independent printed circuit board (PCB), which includes a positive power stabilizing chip, a negative power stabilizing chip, a voltage reference chip and a domestic high-input-impedance operational amplifier. In addition, the main control chip and the multiplexer are also designed in an independent printed circuit board, which is also called a main board. The pre-amplifier circuit printed circuit board (called a secondary board) is connected to the main board through a four-core shielding cable, which is a positive power line, a negative power line, a ground line and a signal line in sequence.

[0064] The system embodiments described above are merely illustrative, wherein the modules described as separate components can or can not be physically separated, and the components displayed as units can or can not be physical modules, i.e., can be located in one place or distributed on multiple network modules. Part or all of the modules can be selected to achieve the purpose of the embodiment according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0065] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be realized by means of software and the necessary general hardware platform, and of course can also be realized by hardware. Based on such understanding, the above technical solutions can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, etc., and includes a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the method described in each embodiment or some part of the embodiment.

[0066] In addition, in the present application, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0067] In addition, in the present application, the description of the terms "embodiment", "the present embodiment", "another embodiment" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0068] It should be explained finally: the above examples are only used to illustrate the technical scheme of the utility model and not to limit it, although the utility model has been explained in detail with reference to the above examples, the ordinary skilled in the art should understand that: the specific implementation of the utility model can still be modified or replaced, and any modification or equivalent replacement without departing from the spirit and scope of the utility model should be covered in the protection scope of the claims of the utility model.

Claims

1. A micro-crop inorganic ion signal in vivo detection hardware system, characterized in that, The application relates to a data acquisition module and a Bluetooth module. The acquisition module comprises a main control chip and a multiplexer. The main control chip is connected with the Bluetooth module through a first serial port, the Bluetooth module is connected with a computer host computer through Bluetooth, the main control chip is also connected with the multiplexer through a second serial port and an AD acquisition port. The multiplexer is connected with a plurality of pre-amplification circuits, each pre-amplification circuit acquires the potential signal of crop ions through a full-solid-state ion selective electrode in situ detection. The acquisition module further comprises a positive power supply circuit, a negative power supply circuit, a crystal oscillator circuit, a reset circuit and a reference circuit.

2. The micro-crop inorganic ion signal in vivo detection hardware system of claim 1, wherein, The positive power supply circuit and the negative power supply circuit are used for supplying power for the acquisition module and the Bluetooth module. The crystal oscillator circuit is used as a clock signal source for providing a periodic pulse signal and ensuring the synchronization of data transmission and processing. The reset circuit is used for resetting. The reference circuit is used for providing a potential reference. The positive power supply circuit is supplied with power by a rechargeable battery for providing a positive power supply, and the negative power supply circuit is supplied with power by another rechargeable battery for providing a negative power supply.

3. A micro-crop inorganic ion signal in vivo detection hardware system according to claim 2, wherein, The main control chip adopts a first voltage stabilizing chip to convert the voltage of the positive power supply circuit and provide a working voltage. The multiplexer adopts a second voltage stabilizing chip to convert the power supply voltage of the positive power supply circuit and provide a working voltage. The multiplexer adopts an 8-channel multiplexer.

4. The micro-crop inorganic ion signal in vivo detection hardware system of claim 1, wherein, The pre-amplification circuit comprises an operational amplifier, a positive power supply stabilizing chip, a negative power supply stabilizing chip, a voltage reference chip and a voltage lifting and scaling circuit.

5. The micro-crop inorganic ion signal in vivo detection hardware system of claim 1, wherein, The operational amplifier is used for amplifying the signal collected by the full-solid-state ion selective electrode. The positive power supply stabilizing chip and the negative power supply stabilizing chip are respectively used for converting the power supply voltage of the positive power supply circuit and the negative power supply circuit and providing voltage supply for the operational amplifier. The voltage reference chip provides a voltage reference for the voltage lifting and scaling circuit. The voltage lifting and scaling circuit lifts and scales the amplified signal based on the voltage reference provided by the voltage reference chip. The operational amplifier adopts a TP2121 or RS8491 type domestic operational amplifier.

6. A micro-crop inorganic ion signal in vivo detection hardware system according to claim 5, wherein, The voltage lifting and scaling circuit lifts and scales the amplified signal to 0-2.5V based on the stable potential signal provided by the voltage reference chip. The Bluetooth module comprises a master Bluetooth module, a slave Bluetooth module and a USB-TTL module, and the master Bluetooth module and the slave Bluetooth module adopt HC-05 Bluetooth modules.

7. The micro-crop inorganic ion signal in vivo detection hardware system of claim 1, wherein, The main control chip and the multiplexer are integrated in a PCB board as a main board, and each pre-amplification circuit is also integrated in a PCB board as a sub-board.

8. The micro-crop inorganic ion signal in vivo detection hardware system of claim 3, wherein, The main board, the rechargeable battery and the Bluetooth module are arranged in a plastic waterproof box made of ABS material, 8 four-core aviation plug female seats are mounted on the side of the plastic waterproof box, and each four-core aviation plug female seat is connected with a positive power line, a negative power line, a ground line and a signal line on the main board through wires.

9. A micro-crop inorganic ion signal in vivo detection hardware system according to claim 8, wherein, ​ 10. The micro-crop inorganic ion signal in vivo detection hardware system of claim 8, wherein, Each of the sub-boards is arranged in a metal shell, and each of the preamplifier circuits is connected with a 4-core aviation plug male head through a 4-core cable, and each of the 4-core aviation plug male heads is connected with a 4-core aviation plug female seat; the metal shell is connected with a ground wire through a metal spring sheet welded on a PCB ground wire pad of the preamplifier circuit.

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