CN110030424B

CN110030424B - Valve remote control terminal suitable for smart agriculture and working method thereof

Info

Publication number: CN110030424B
Application number: CN201910223361.5A
Authority: CN
Inventors: 张建福
Original assignee: Shenzhen Lianzhi Iot Technology Co ltd
Current assignee: Shenzhen Lianzhi Iot Technology Co ltd
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2020-07-28
Anticipated expiration: 2039-03-22
Also published as: CN110030424A

Abstract

The invention relates to the technical field of intelligent agriculture internet of things and discloses a valve remote control terminal suitable for intelligent agriculture and a working method thereof. Through the invention, on one hand, the purposes of wirelessly receiving the control instruction message and executing corresponding valve control according to the control instruction message can be realized by utilizing the valve remote wireless control channel consisting of the half-duplex transceiving power amplifier circuit and the antenna unit, the wireless transceiving circuit unit, the micro-control circuit unit and the valve control module, and on the other hand, the energy-saving control channel consisting of the micro-control circuit unit, the power amplifier power supply control circuit unit, the half-duplex transceiving power amplifier circuit and the antenna unit can be used for powering off and saving energy when in dormancy, so that the receiving control instruction message can be started periodically or intermittently, the purposes of saving energy of a terminal battery and delaying endurance are realized, and the valve remote control terminal is more suitable for an intelligent agricultural scene.

Description

Valve remote control terminal suitable for smart agriculture and working method thereof

Technical Field

The invention belongs to the technical field of intelligent agriculture internet of things, and particularly relates to a valve remote control terminal suitable for intelligent agriculture and a working method thereof.

Background

Wisdom agriculture is the advanced application of internet of things in modern agriculture field, namely uses sensor and software to carry out remote monitoring to control agricultural production through mobile platform or computer platform, make traditional agriculture more have "wisdom". In addition to accurate sensing, control and decision management, the intelligent agriculture also comprises contents in aspects of agricultural electronic commerce, food source tracing and anti-counterfeiting, agricultural leisure travel, agricultural information service and the like in a broad sense. The current intelligent agricultural internet of things technology mainly comprises the following functional systems.

(1) And the monitoring function system is used for monitoring parameters such as soil moisture, soil temperature, air humidity, illumination intensity, plant nutrient content and the like (other parameters can be selected and matched, such as PH value and conductivity in soil and the like) according to the plant growth environment information acquired by the wireless network. The information collection and management system is responsible for receiving data sent by the wireless sensing aggregation node, storing, displaying and managing the data, realizes the acquisition, management, dynamic display and analysis processing of the information of the test points of all the bases, displays the information to users in a visual chart and curve mode, and performs automatic control behaviors such as automatic irrigation, automatic cooling, automatic film rolling, automatic liquid fertilizer application, automatic pesticide spraying and the like on the agricultural park according to the feedback of various kinds of information.

(2) The monitoring function system is used for realizing automatic information detection and control in an agricultural park, a wireless sensing transmission system is arranged on the solar power supply system and the information acquisition and routing equipment through the wireless sensing nodes, each base point is provided with the wireless sensing node, and each wireless sensing node can monitor parameters such as soil moisture, soil temperature, air humidity, illumination intensity, plant nutrient content and the like. And providing various acousto-optic alarm information and short message alarm information according to the requirements of the planted crops.

(3) The real-time image and video monitoring function system is characterized in that the basic concept of the agricultural Internet of things is to realize a relation network of object connection between crops and the environment, soil and fertility in agriculture, and the optimal growth environment conditioning and fertilization management of the crops are realized through multi-dimensional information and multi-level processing. However, as a person managing agricultural production, only numerical object association cannot fully create the optimal growth conditions of crops. Video and image monitoring provide a more intuitive way of expression for the association between objects. For example, the water shortage in any place can be seen, only the low water content data and the irrigation degree can be seen on the single-layer data of the Internet of things, and the decision can be made only according to the data without moving the hard sleeve. Because the non-uniformity of the agricultural production environment determines the congenital defects in the agricultural information acquisition, the breakthrough from a simple technical means is difficult. The real-time state of crop production is intuitively reflected by the introduction of video monitoring, and the growth vigor of some crops can be intuitively reflected by introducing video images and image processing, and the overall state and the nutrition level of the crop growth can be reflected laterally, so that a more scientific planting decision theory basis can be provided for farmers on the whole.

Among several above-mentioned major function systems, a valve device for accomplishing control actions such as automatic irrigation, automatic spraying medicine and liquid fertilizer automatic fertilization is one of indispensable key equipment, but these valve devices generally need open-air discrete to be arranged, in order to avoid the power supply and the trouble of communication line of walking, adopt battery powered and utilize wireless thing networking to carry out remote communication control usually, consequently must have the terminal energy-conserving demand of valve device, it can realize the novel valve remote control terminal of long-range wireless control action and extension terminal battery duration to be necessary to design a section.

Disclosure of Invention

The invention aims to solve the requirements of the existing valve remote control terminal on wireless control, battery energy conservation and the like, and provides a valve remote control terminal suitable for intelligent agriculture and a working method thereof.

The technical scheme adopted by the invention is as follows:

a valve remote control terminal suitable for smart agriculture comprises a micro-control circuit unit, a wireless transceiver circuit unit, a half-duplex transceiver power amplifier circuit, an antenna unit, a power amplifier power supply control circuit unit and a plurality of valve control modules, wherein each valve control module comprises an electromagnetic valve driving circuit unit and an electromagnetic valve electrically connected with the electromagnetic valve driving circuit unit;

the wireless transceiver circuit unit of little control circuit unit with half-duplex transceiver power amplifier circuit and antenna element are communication connection in proper order, the power amplifier of little control circuit unit makes to enable the output electricity and connects the controlled end of power amplifier power supply control circuit unit, the power supply output electricity of power amplifier power supply control circuit unit is connected the power supply incoming end of half-duplex transceiver power amplifier circuit and antenna element, the first output electricity of little control circuit unit is connected the controlled end of solenoid valve drive circuit unit.

Preferably, the valve control module further comprises a flow sensor corresponding to the electromagnetic valve, wherein an output end of the flow sensor is electrically connected to a first input end of the micro control circuit unit.

Preferably, the electromagnetic valve is a pulse electromagnetic valve, the electromagnetic valve driving circuit unit is a motor driving chip with the model number of AT9110 and comprises a first capacitor, a second capacitor and a first resistor, wherein an OA pin and an OB pin of the motor driving chip are respectively and electrically connected with two ends of a coil branch of the pulse electromagnetic valve, two ends of the first capacitor are respectively and electrically connected with the OA pin and the OB pin of the motor driving chip, an IA pin and an IB pin of the motor driving chip are respectively and electrically connected with two first output ends of the micro control circuit unit, a VCC pin of the motor driving chip is electrically connected with one end of the first resistor, a GND pin of the motor driving chip is grounded, the other end of the first resistor is respectively and electrically connected with one end of the second capacitor and a power supply access end of the battery pack, and the other end of the second capacitor is grounded.

Preferably, the power amplifier power supply control circuit unit adopts a low-dropout linear voltage stabilizing chip with the model of MCP1824T-3302e/OT and comprises a third capacitor, a fourth capacitor, a fifth capacitor and a second resistor, wherein the low-dropout linear voltage stabilizing chip comprises

The pin is regarded as the controlled end electricity of power amplifier power supply control circuit unit connects the power amplifier enable output of little control circuit unit, battery power supply incoming end is connected respectively to the VIN pin of low-dropout linear voltage regulation chip the one end of third electric capacity with the one end of fourth electric capacity, the GND pin of low-dropout linear voltage regulation chip the other end of third electric capacity with the other end of fourth electric capacity ground connection respectively, the VOUT pin electricity of low-dropout linear voltage regulation chip connect respectively the power supply output of power amplifier power supply control circuit unit the one end of fifth electric capacity with the one end of second resistance, the PWRGD pin electricity of low-dropout linear voltage regulation chip connects the other end of second resistance, the other end ground connection of fifth electric capacity.

Preferably, the half-duplex transceiver power amplifier circuit and the antenna unit adopt a power amplifier chip with the model number of SE2611T and a single-way inverter with the model number of SN 74L VC1G04DBVT and include a sixth capacitor and a seventh capacitor, wherein a L EN pin and a CRX pin of the power amplifier chip are electrically connected to a Y pin of the single-way inverter respectively, a PEN pin and a CTX pin of the power amplifier chip and an a pin of the single-way inverter are electrically connected to a half-duplex transceiver switch end of the wireless transceiver circuit unit respectively, a TX pin of the power amplifier chip is electrically connected to a radio frequency signal connection end of the wireless transceiver circuit unit after being connected in series with the sixth capacitor, and an RX pin of the power amplifier chip is electrically connected to a radio frequency signal connection end of the wireless transceiver circuit unit after being connected in series with the sixth capacitor.

The other technical scheme adopted by the invention is as follows:

the working method of the valve remote control terminal suitable for the intelligent agriculture comprises the steps of a sleep mode and an awakening mode;

the sleep mode includes the steps of:

s101, after determining that the power amplifier enters a sleep mode, the micro control circuit unit and the wireless transceiver circuit unit enter an energy-saving working state, and meanwhile the micro control circuit unit controls the power amplifier enabling output end to output a first level signal, so that the power supply output end of the power amplifier power supply control circuit unit outputs low level voltage, and the half-duplex transceiver power amplifier circuit and the antenna unit are powered off and shut down;

the wake pattern comprises the steps of:

s201, after the awakening mode is determined to enter, the micro control circuit unit and the wireless transceiver circuit unit enter a normal working state, meanwhile, the micro control circuit unit controls the power amplifier enabling output end to output a second level signal, so that the power supply output end of the power amplifier power supply control circuit unit outputs high level voltage, and the half-duplex transceiver power amplifier circuit and the antenna unit are powered on to work;

s202, a micro-control circuit unit controls the half-duplex receiving and transmitting power amplification circuit and the antenna unit to enter a simplex receiving state through a wireless receiving and transmitting circuit unit: if receiving the terminal wake-up message on the wake-up channel on schedule, executing step S203, otherwise determining to enter a sleep mode;

s203, if a valve control instruction message containing the unique identification information of the target terminal and the unique identification information of the target valve is received on the control channel according to the period, executing the step S204, otherwise, determining to enter a sleep mode, wherein the valve control instruction message is a valve conduction instruction message, a valve stop instruction message or a valve switching instruction message;

s204, judging whether the unique identification information of the target terminal is matched with the unique identification information of the local terminal by the micro-control circuit unit, if so, controlling a valve control module corresponding to the unique identification information of the target valve to execute the following actions according to the valve control instruction message: the electromagnetic valve is driven to be switched on/off by the electromagnetic valve driving circuit unit, and then the half-duplex transceiving power amplification circuit and the antenna unit are controlled by the micro-control circuit unit through the wireless transceiving circuit unit to enter a simplex transmitting state: feeding back a valve control response message on the confirmation channel, otherwise returning to the step S203 to continue to listen to the control channel.

Preferably, when the valve control module further includes a flow sensor corresponding to the solenoid valve, after the solenoid valve is driven to be turned on by the solenoid valve driving circuit unit:

and the micro control circuit unit reads and accumulates the flow data from the flow sensor in real time, and when the accumulation result reaches the flow limit indicated in the valve control instruction message, the electromagnetic valve driving circuit unit drives the electromagnetic valve to stop, and then the sleep mode is determined to be entered.

Preferably, if the valve control command message further includes password verification selection information and password information, the micro-control circuit unit, before controlling the valve control module to perform corresponding actions:

searching the pre-stored corresponding password content in a local storage area according to the password verification selection information, then judging whether the searched password content is consistent with the password information, if so, allowing control, otherwise, refusing control, wherein the password verification selection information is used for indicating the unique password identification corresponding to the password information.

Preferably, if the password authentication selection information and/or the password information is encrypted in the valve control instruction message, and the valve control instruction message further includes encryption algorithm selection information and encryption key selection information, the micro control circuit unit decrypts and acquires the password authentication selection information and/or the password information as follows:

searching a pre-stored corresponding decryption algorithm in a local storage area according to the encryption algorithm selection information and/or searching a pre-stored corresponding decryption key in a local storage area according to the encryption key selection information, and then decrypting by using the searched decryption algorithm and/or decryption key to obtain the password authentication selection information and/or the password information, wherein the encryption algorithm selection information is used for indicating an algorithm unique identifier of an encryption algorithm adopted in the process of encrypting the password authentication selection information and/or the password information, and the encryption key selection information is used for indicating a key unique identifier of an encryption key adopted in the process of encrypting the password authentication selection information and/or the password information.

Preferably, in the step S202, if the terminal wake-up message is a broadcast message, the terminal wake-up message further includes a source address invalid bit and/or a broadcast address invalid bit, where the source address invalid bit is used to indicate that no source address information exists in the terminal wake-up message, the broadcast address invalid bit is used to indicate that no broadcast address information exists in the terminal wake-up message, the source address information is used to indicate a sender identity of the terminal wake-up message, and the broadcast address information is used to indicate a receiver identity of the terminal wake-up message.

The invention has the beneficial effects that:

(1) the invention provides a novel valve remote control terminal which can realize remote wireless control action and prolong the battery endurance of the terminal, on one hand, the invention can realize the wireless receiving of control instruction messages and the purpose of executing corresponding valve control according to the control instruction messages by utilizing a valve remote wireless control channel consisting of a half-duplex transceiving power amplifier circuit and an antenna unit, a wireless transceiving circuit unit, a micro-control circuit unit and a valve control module, on the other hand, the invention can carry out power-down energy-saving operation on the half-duplex transceiving power amplifier circuit and the antenna unit when in dormancy by utilizing an energy-saving control channel consisting of the micro-control circuit unit, a power amplifier power supply control circuit unit, the half-duplex transceiving power amplifier circuit and the antenna unit, thereby periodically or intermittently starting to receive the control instruction messages and realizing the purposes of saving energy and delaying the battery endurance of the terminal, the valve remote control terminal is more suitable for an intelligent agricultural scene;

(2) by adopting the working method comprising the sleep mode and the awakening mode, the valve remote control terminal can be further prompted to fully utilize various unnecessary awakening time slots to carry out sleep energy conservation in the process of finishing the remote control operation of the valve, thereby achieving the optimal energy conservation purpose;

(3) in the working method, by applying a password verification mechanism and an information encryption mechanism, illegal valve control instructions can be prevented from being executed, and the aim of guaranteeing information safety in the remote control process is fulfilled;

(4) the valve remote control terminal also has the advantages of being capable of indicating the receiving and sending states, monitoring the power supply condition, simple in circuit structure, easy to realize products and the like, and is convenient to popularize and apply practically.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a block diagram of a circuit structure of a valve remote control terminal provided in the present invention.

Fig. 2 is a circuit diagram of the micro-control circuit unit and the transceiver status indicating circuit unit in the valve remote control terminal provided by the invention.

Fig. 3 is a circuit diagram of a wireless transceiver circuit unit in a valve remote control terminal according to the present invention.

Fig. 4 is a circuit diagram of a half-duplex transceiver power amplifier circuit, an antenna unit and a power amplifier power supply control circuit unit in the valve remote control terminal provided by the invention.

Fig. 5 is a circuit diagram of a valve control module in a valve remote control terminal provided in the present invention.

Fig. 6 is a circuit diagram of a working power supply circuit unit, a working voltage detection circuit unit, a driving power supply circuit unit and a driving voltage detection circuit unit in the valve remote control terminal according to the present invention.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the invention. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.

It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, B exists alone, and A and B exist at the same time, and the term "/and" is used herein to describe another association object relationship, which means that two relationships may exist, for example, A/and B, may mean: a alone, and both a and B alone, and further, the character "/" in this document generally means that the former and latter associated objects are in an "or" relationship.

It will be understood that when an element is referred to as being "connected," "connected," or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly adjacent" or "directly coupled" to another element, there are no intervening elements present. Other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between … …" versus "directly between … …", "adjacent" versus "directly adjacent", etc.).

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.

It should also be noted that, in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed substantially concurrently, or the figures may sometimes be executed in the reverse order, depending upon the functionality/acts involved.

In the following description, specific details are provided to facilitate a thorough understanding of example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. For example, systems may be shown in block diagrams in order not to obscure the examples in unnecessary detail. In other instances, well-known processes, structures and techniques may be shown without unnecessary detail in order to avoid obscuring example embodiments.

Example one

As shown in fig. 1 to 6, the valve remote control terminal suitable for smart agriculture provided in this embodiment includes a micro control circuit unit, a wireless transceiver circuit unit, a half-duplex transceiver power amplifier circuit and antenna unit, a power amplifier power supply control circuit unit, and a plurality of valve control modules, where each valve control module includes an electromagnetic valve driving circuit unit and an electromagnetic valve electrically connected to the electromagnetic valve driving circuit unit; the wireless power supply system comprises a micro control circuit unit, a wireless transceiver circuit unit, a half-duplex transceiver power amplifier circuit and an antenna unit, wherein the micro control circuit unit, the wireless transceiver circuit unit, the half-duplex transceiver power amplifier circuit and the antenna unit are sequentially in communication connection, a power amplifier enabling output end PAEN of the micro control circuit unit is electrically connected with a controlled end of a power amplifier power supply control circuit unit, a power supply output end VPA of the power amplifier power supply control circuit unit is electrically connected with a power supply access end of the half-duplex transceiver power amplifier circuit and the antenna unit, and a first output end of the micro control.

As shown in fig. 1, in the specific structure of the valve remote control terminal, the micro control circuit unit is configured to control the terminal to perform switching between a sleep mode and an awake mode, (1) when it is determined that the terminal enters the sleep mode, the micro control circuit unit and the wireless transceiver circuit unit are controlled to enter an energy-saving operating state, and at the same time, the power amplifier enable output port PAEN is controlled to output a first level signal (e.g., a low level signal), so that the power supply output port VPA of the power amplifier power supply control circuit unit outputs a low level voltage, and the half-duplex transceiver power amplifier circuit and the antenna unit are powered off, and (2) when it is determined that the terminal enters the awake mode, the micro control circuit unit and the wireless transceiver circuit unit are controlled to enter a normal operating state, and at the same time, the power amplifier enable output port PAEN is controlled to output a high level signal (e.g., a high level trigger signal), so that the power supply output port VPA high level voltage is output by the power amplifier power supply control circuit unit and the antenna unit, and the power amplifier power supply circuit unit and the antenna unit are powered on and then the power amplifier circuit and the micro control circuit unit is controlled to operate according to a specific operation command, such as, for example, but not limited to the specific type of the execution unit driving command of the micro control unit, the STM driving unit, and the micro control unit, and the specific type of the micro control unit, and.

The wireless transceiving circuit unit is configured to perform mutual switching between an energy saving operating state and a normal operating state under the control of the micro control circuit unit, wherein in the normal operating state, the half-duplex transceiving power amplifier circuit and the antenna unit are controlled to perform switching between a simplex receiving state and a simplex transmitting state according to an indication of the micro control circuit unit, and in the simplex receiving state, analog electrical signals received by the half-duplex transceiving power amplifier circuit and the antenna unit are subjected to corresponding analog-to-digital processing (for example, performing processing such as demodulation, decoding, and message verification), and then digital information obtained by the processing is transmitted to the micro control circuit unit, and in the simplex transmitting state, feedback information from the micro control circuit unit is subjected to corresponding digital-to-analog processing (for example, performing processing such as packaging, encoding, and modulating), and then analog signals obtained by the processing are transmitted to the half-duplex transceiving power amplifier circuit and the antenna unit to perform wireless transmission.

The half-duplex transceiver Power amplifier circuit and the antenna unit are used for switching between a simplex receiving state and a simplex transmitting state under the control of the wireless transceiver circuit unit so as to perform half-duplex communication with a wireless base station or a remote device, as shown in fig. 4, specifically, the half-duplex transceiver Power amplifier circuit and the antenna unit may be but not limited to a Power amplifier chip U with a model SE2611 and a single inverter U with a model SN VC1G04DBVT and include a sixth capacitor C and a seventh capacitor C, wherein AN EN pin and a CRX pin of the Power amplifier chip U are electrically connected to a Y pin of the single inverter U, a CTX pin and AN a pin of the single inverter U are electrically connected to a half-duplex transceiver switching terminal of the wireless transceiver circuit unit respectively, a TX pin of the Power amplifier chip U is electrically connected to a radio frequency signal connection terminal n of the wireless transceiver circuit unit after being connected to the sixth capacitor C and a TX pin of the single inverter U, a TX pin of the chip U is electrically connected to a half-duplex transceiver switching terminal of the wireless transceiver switching terminal n of the wireless transceiver circuit unit after being connected to the sixth capacitor C in series, and a signal input terminal of the wireless transceiver unit, and a signal transceiver unit, the signal transceiver unit may be used as AN input terminal of a low-frequency transceiver circuit, and AN input terminal of a transceiver circuit, when the signal transceiver chip (transceiver chip) of the transceiver chip (transceiver chip, the transceiver chip is connected to the transceiver chip, the transceiver chip may be used for example, the transceiver chip may be connected to receive signal input terminal of the transceiver unit, the transceiver unit may be connected to receive a transceiver unit, the transceiver chip.

The power amplifier power supply control circuit unit is used for outputting different level voltages under the control of the micro control circuit unit so as to complete the power-on or power-off operation of the half-duplex transceiving power amplifier circuit and the antenna unit and further cooperate with a corresponding awakening mode or a corresponding sleeping mode. As shown in fig. 4, specifically, the power amplifier power supply control circuit unit may be but is not limited toThe low-dropout linear regulator chip U5 is MCP1824T-3302e/OT and comprises a third capacitor Cap4, a fourth capacitor C13, a fifth capacitor C14 and a second resistor R5, wherein the low-dropout linear regulator chip U5

A pin (Shutdown pin) serving as a controlled end of the power amplifier power supply control circuit unit is electrically connected to a power amplifier enable output end paen (power amplifier enable) of the micro control circuit unit, a VIN pin (i.e., an input pin) of the low dropout linear regulator chip U5 is electrically connected to a battery power supply access end VBT, one end of the third capacitor Cap4 and one end of the fourth capacitor C13, respectively, a GND pin (i.e., a ground pin) of the low dropout linear regulator chip U5, the other end of the third capacitor Cap4 and the other end of the fourth capacitor C13 are grounded, respectively, a VOUT pin (i.e., an output pin) of the low dropout linear regulator chip U5 is electrically connected to a power supply output end VPA of the power amplifier power supply control circuit unit, one end of the fifth capacitor C14 and one end of the second resistor R5, respectively, a PWRGD pin of the low dropout linear regulator chip U5 is electrically connected to the other end of the second resistor R5, the other end of the fifth capacitor C14 is grounded. As is clear from the chip manual incorporating the low dropout regulator chip U5, the low dropout regulator chip U5

When a low-level signal is input into a pin, a low-level voltage can be output at the VOUT pin, the power supply to the half-duplex transceiver power amplification circuit and the antenna unit is interrupted, and the low-dropout linear regulator chip U5 is connected

When a high-level signal is input into the pin, high-level voltage can be output at the pin VOUT to start power supply to the half-duplex transceiver power amplifier circuit and the antenna unit, so that power-on or power-off operation of the half-duplex transceiver power amplifier circuit and the antenna unit can be completed, and the advantage of short operation delay time is achieved.

And the valve control module is used for controlling the input signal of the electromagnetic valve driving circuit unit under the control of the micro-control circuit unit to complete the operations of conducting, stopping or switching the corresponding electromagnetic valve and the like. Specifically, as shown in fig. 5, in the valve control module, the solenoid valve is a pulse solenoid valve, the solenoid valve driving circuit unit (in fig. 5, the solenoid valve driving circuit units 1 to 6 all adopt the same circuit structure, and here, the solenoid valve driving circuit unit 1 is taken as an example to specifically describe the circuit connection relationship), but not limited to, a motor driving chip DR1 with model number AT9110 and including a first capacitor C43, a second capacitor C44 and a first resistor R22, wherein an OA pin (i.e., a reverse signal output pin) and an OB pin (i.e., a forward signal output pin) of the motor driving chip DR1 are respectively electrically connected to two ends (DAT and DBT) of a coil branch of the pulse solenoid valve, two ends of the first capacitor C43 are respectively electrically connected to an OA pin and an OB pin of the motor driving chip DR1, and an IA pin (i.e., a reverse signal input pin) and an IB pin (i.e., a forward signal input pin) of the motor driving chip DR1 are respectively electrically connected to the microcontroller circuit Two first output terminals (DR1A, DR1B) of unit, the VCC pin (the power supply pin) electricity of motor drive chip DR1 is connected the one end of first resistance R22, the GND pin (the ground connection pin) ground connection of motor drive chip DR1, the other end of first resistance R22 is connected electrically respectively the one end and the group battery power supply incoming end VBTs of second electric capacity C44, the other end ground connection of second electric capacity C44. As is known from the chip manual of the motor driving chip DR1, when a reverse rotation signal is input to the IA pin, a reverse current is output between the OA pin and the OB pin, and a cutoff valve is driven by a coil branch of the pulse solenoid valve, and when a forward rotation signal is input to the IB pin, a forward current is output between the OA pin and the OB pin, and a conduction valve is driven by the coil branch of the pulse solenoid valve, so that operations such as turning on, turning off, or switching the corresponding solenoid valve can be performed by selecting input of the reverse rotation signal or the forward rotation signal.

In addition, the valve remote control terminal should further include a storage battery unit to provide electric energy support for the micro control circuit unit, the wireless transceiver circuit unit, the half-duplex transceiver power amplifier circuit and antenna unit, the power amplifier power supply control circuit unit, the valve control module, and the like, wherein the storage battery unit may be, but is not limited to, a lithium battery or other batteries.

Therefore, through the above detailed description of the valve remote control terminal, on one hand, by using the valve remote wireless control channel composed of the half-duplex transceiver power amplifier circuit and antenna unit, the wireless transceiver circuit unit, the micro-control circuit unit and the valve control module, can realize the wireless receiving of the control instruction message and the purpose of executing the corresponding valve control according to the control instruction message, on the other hand, utilizes an energy-saving control channel which is composed of a micro-control circuit unit, a power amplifier power supply control circuit unit, a half-duplex receiving and transmitting power amplifier circuit and an antenna unit, the half-duplex transceiver power amplifier circuit and the antenna unit can be powered off and energy-saving operated when in dormancy, therefore, the control instruction message can be periodically or intermittently started and received, the purposes of saving energy of a terminal battery and delaying the endurance are achieved, and the valve remote control terminal is more suitable for an intelligent agricultural scene.

For the purpose of further realizing terminal battery energy saving, the foregoing working method of the valve remote control terminal suitable for smart agriculture may further include a sleep mode and an awake mode, wherein the sleep mode may include, but is not limited to, the following steps S101:

s101, after the fact that the wireless transceiving circuit unit enters the sleep mode is confirmed, the micro control circuit unit and the wireless transceiving circuit unit enter an energy-saving working state, meanwhile, the micro control circuit unit controls a power amplifier enabling output end PAEN to output a first level signal, a power supply output end VPA of the power amplifier power supply control circuit unit outputs low level voltage, and the half-duplex transceiving power amplifier circuit and the antenna unit are shut down electrically.

In step S101, whether to enter the sleep mode is determined by the micro control circuit unit according to actual conditions, once entering the sleep mode, the micro control circuit unit and the wireless transceiver circuit unit maintain the most basic operation, such as timing operation, in the most energy-saving state, and the half-duplex transceiver power amplifier circuit and the antenna unit are powered down without energy loss, so that a large amount of electric energy can be saved in the sleep stage.

In addition, the wake mode may include, but is not limited to, the following steps S201 to S204.

S201, after the awakening mode is determined to be entered, the micro control circuit unit and the wireless transceiving circuit unit enter a normal working state, meanwhile, the micro control circuit unit controls the power amplifier enabling output end PAEN to output a second level signal, so that the power supply output end VPA of the power amplifier power supply control circuit unit outputs high level voltage, and the half-duplex transceiving power amplifier circuit and the antenna unit are started to be powered on to work.

In step S201, whether to enter the wake-up mode is determined by the micro control circuit unit according to actual conditions, once the wake-up mode is entered, the micro control circuit unit and the wireless transceiver circuit unit will both resume normal operation, and the half-duplex transceiver power amplifier circuit and the antenna unit will be powered on to prepare to receive or transmit air interface messages at any time.

S202, a micro-control circuit unit controls the half-duplex receiving and transmitting power amplification circuit and the antenna unit to enter a simplex receiving state through a wireless receiving and transmitting circuit unit: if the terminal wake-up message is received on the wake-up channel on schedule, step S203 is executed, otherwise, it is determined to enter the sleep mode.

In step S202, the terminal wake-up message is a dedicated air interface message from the wireless base station/remote device and used for waking up the intermittent sleeping terminal (i.e. the valve remote control terminal in this embodiment), and in order to improve the terminal wake-up probability, the terminal wake-up message may be preferably sent in the following manner: the method comprises the steps of continuously and periodically sending a plurality of terminal wake-up messages on a wake-up channel in a first period, wherein the terminal wake-up messages comprise first period time length information and current message sending clock information, the first period time length information is used for indicating the time length t of the first period, and the current message sending clock information is used for indicating a timestamp t from the starting time of the first period to the current message sending time_x. Through the information matchingAfter acquiring the first time period duration information and the current message sending clock information, the intermittent sleep terminal can know the sending end time of the terminal wakeup message in the current round, and further can set a longer temporary sleep time (namely t-t)_x) The terminal can sleep regularly (i.e. enter a short sleep mode), and wake up after the transmission is finished (i.e. enter an awakening mode again), thereby being beneficial to saving energy of the terminal. In addition, the wake-up channel is a dedicated channel dedicated to transmitting a terminal wake-up related message (including but not limited to the terminal wake-up message) over the air interface.

In detail, the duration T of the first time interval is greater than the sleep cycle T of the intermittent sleeping terminal, and the sleep cycle T includes the periodic sleeping duration T of the intermittent sleeping terminal_sleepAnd the periodic wake duration T_wakeThe sending period of the terminal wake-up message is less than the period wake-up duration T of the wireless terminal_wake. Through the time length setting, the intermittent dormant terminal can be ensured to completely receive the terminal awakening message in the awakening time length of any sleep period, and awakening omission is avoided. For example, if the periodic wake period T is_wakeIs 100ms, the period sleep time T_sleepAnd 3900ms, the sleep cycle of the intermittent sleep terminal is 4 seconds, the transmission cycle can be designed to be 60ms (assuming that the transmission time length of the terminal wake-up message is 50ms, and a time slot interval of 10ms is reserved), and the time length of the first time period can be designed to be 4020ms, that is, the terminal wake-up message can be continuously transmitted 67 times.

Preferably, if all the intermittently sleeping terminals are to be woken up to perform further remote valve control, the terminal wake-up message may be designed as a broadcast message, and at this time, it may not be necessary for the intermittently sleeping terminals to know the sender identity and/or the receiver identity of the terminal wake-up message, so the terminal wake-up message may further include a source address invalid bit and/or a broadcast address invalid bit, where the source address invalid bit is used to indicate that no source address information exists in the terminal wake-up message, the broadcast address invalid bit is used to indicate that no broadcast address information exists in the terminal wake-up message, the source address information is used to indicate the sender identity of the terminal wake-up message, and the broadcast address information is used to indicate the receiver identity of the terminal wake-up message. By the address default configuration of the terminal awakening message, the message length (generally 4 bytes or 8 bytes) and the sending time can be effectively shortened, so that the energy conservation of a message sender is facilitated, the channel utilization rate is improved, the periodic awakening time of the intermittent dormant terminal can be effectively shortened, and the energy conservation of the terminal is further facilitated.

S203, if a valve control instruction message containing the target terminal unique identification information and the target valve unique identification information is received on the control channel according to the period, executing the step S204, otherwise, determining to enter a sleep mode, wherein the valve control instruction message is a valve conduction instruction message, a valve stop instruction message or a valve switching instruction message.

In step S203, the valve control instruction message is a dedicated air interface message from the wireless base station/remote device and used for instructing the valve remote control terminal to perform specific operations such as valve on/off/switching, where the valve on instruction message is used for instructing the valve remote control terminal to perform a valve on operation, the valve off instruction message is used for instructing the valve remote control terminal to perform a valve off operation, and the valve switching instruction message is used for instructing the valve remote control terminal to perform a valve switching operation (i.e., switching from on to off or switching from off to on). In detail, when the valve control instruction message includes a control task unique identifier and a temporary dormancy duration, after the valve control instruction message is intercepted and received, if the corresponding valve control task is found to be completed according to the control task unique identifier, the valve control instruction message is determined to enter a timed dormancy mode according to the temporary dormancy duration. Therefore, the subsequent step S204 is not executed any more, repeated execution and control errors are avoided, timely dormancy is realized, and the terminal energy conservation is further facilitated. In addition, the control channel is a dedicated channel dedicated to transmitting terminal control related messages (including but not limited to the valve control instruction message) over the air interface, and may be the same as or different from the wake-up channel.

In step S204, the valve control response message is an air interface message indicating that the present valve remote control is successful to the wireless base station/remote device. In addition, the acknowledgement channel is a dedicated channel dedicated to transmitting a terminal response related message (including but not limited to the valve control response message) over the air interface, and may be the same as or different from the wakeup channel or the control channel.

Preferably, in order to verify whether the wireless base station/remote device is legal, prevent the problem of "pseudo base station" and avoid executing illegal valve control commands, in this embodiment, the valve control command message further includes password verification selection information and password information, so that the micro control circuit unit, before controlling the valve control module to perform corresponding actions: and searching for prestored corresponding password content in a local storage area according to the password verification selection information, then judging whether the searched password content is consistent with the password information, if so, permitting control, and otherwise, refusing control, wherein the password verification selection information is used for indicating the unique password identifier corresponding to the password information. The corresponding relation between the password verification selection information and the password content is preset in a legal valve remote control terminal in advance and is consistent with the corresponding relation between the password verification selection information preset in a legal base station/remote equipment and the password information, and the corresponding relation is not preset in a 'pseudo base station', so that the valve remote control terminal can determine whether a wireless base station/remote equipment initiating a control message is legal or not according to the verification result of the password content and the password information, and only when the password is confirmed to be legal, the valve is allowed to be controlled, the safety risk that the 'pseudo base station' sends an illegal control message can be effectively avoided, and the aim of guaranteeing the information safety in the remote control process is fulfilled.

In order to further ensure the security of the transmission of the password authentication selection information and/or the password information and prevent the password authentication selection information and/or the password information from being intercepted by other "hacker" sites over the air, it is necessary to perform encryption protection on the important information, so in this embodiment, the password authentication selection information and/or the password information is further encrypted in the valve control instruction message, and the valve control instruction message further includes encryption algorithm selection information and encryption key selection information, so that the micro-control circuit unit further decrypts to obtain the password authentication selection information and/or the password information as follows: searching a pre-stored corresponding decryption algorithm in a local storage area according to the encryption algorithm selection information and/or searching a pre-stored corresponding decryption key in a local storage area according to the encryption key selection information, and then decrypting by using the searched decryption algorithm and/or decryption key to obtain the password authentication selection information and/or the password information, wherein the encryption algorithm selection information is used for indicating an algorithm unique identifier of an encryption algorithm adopted in the process of encrypting the password authentication selection information and/or the password information, and the encryption key selection information is used for indicating a key unique identifier of an encryption key adopted in the process of encrypting the password authentication selection information and/or the password information. The corresponding relation between the encryption algorithm selection information and the decryption algorithm is preset in the valve remote control terminal in advance and is consistent with the corresponding relation between the encryption algorithm selection information and the encryption algorithm preset in a legal base station/remote device in advance; the corresponding relation between the encryption key selection information and the decryption key is preset in the valve remote control terminal in advance and is consistent with the corresponding relation between the encryption key selection information and the encryption key preset in a legal base station/remote terminal device in advance. Since the hacker device cannot predict the corresponding relationship in advance, the password authentication selection information and/or the password information are difficult to crack, and the information security can be further improved.

Therefore, through the detailed steps of the sleep mode and the awakening mode, the valve remote control terminal can be further prompted to fully utilize various unnecessary awakening time slots to carry out sleep energy conservation in the process of finishing the valve remote control operation, and the optimal energy conservation purpose is achieved. In addition, by applying a password verification mechanism and an information encryption mechanism, illegal valve control instructions can be prevented from being executed, and the purpose of guaranteeing information safety in the remote control process is achieved.

Preferably, in the valve remote control terminal, the valve control module further includes a flow sensor corresponding to the solenoid valve, wherein an output end IOT 1-2 of the flow sensor is electrically connected to the first input end of the micro control circuit unit. As shown in fig. 1 and 5, the flow sensor is arranged in a pipeline (for example, a water supply pipeline) bound with the corresponding solenoid valve, and transmits the acquired flow data collected in the pipeline to the micro-control circuit unit, so as to realize the precise control purpose of quantitative conduction, for example, the conduction of the supply of 100 liters of irrigation water. Thus, in step S204, it is further optimized that, after the solenoid valve is driven to be turned on by the solenoid valve driving circuit unit: and the micro control circuit unit reads and accumulates the flow data from the flow sensor in real time, and when the accumulation result reaches the flow limit indicated in the valve control instruction message, the electromagnetic valve driving circuit unit drives the electromagnetic valve to stop, and then the sleep mode is determined to be entered. Through the configuration of the flow sensor and the description of the corresponding steps, the automatic quantitative conduction control can be realized, new valve control instruction information does not need to be received, automatic stop control can be performed according to preset conditions, and the intellectualization of the existing agriculture is promoted.

Preferably, the remote control terminal for the valve further comprises a transceiver status indicating circuit unit, wherein the transceiver status indicating circuit unit comprises bidirectional light emitting diodes L EDs, a third resistor R12 and a fourth resistor R16, one end of the bidirectional light emitting diodes L EDs is electrically connected to the second output L EDB of the micro-control circuit unit, the other end of the bidirectional light emitting diodes L EDs is electrically connected to one end of the third resistor R12 and one end of the fourth resistor R16, the other end of the third resistor R12 is electrically connected to the third output L EDA of the micro-control circuit unit, and the other end of the fourth resistor R16 is grounded, as shown in fig. 1 and 2, when the transceiver status indicating circuit unit is in a simplex receiving status or a simplex transmitting status, the transceiver status indicating circuit unit may output different levels at the second output L EDB and the third output L EDA of the micro-control circuit unit, so that the bidirectional light emitting diodes L EDs emit different colors to indicate corresponding transceiver statuses, for example, so as to indicate the simplex transmitting a green light, and further facilitate detection of the device.

Preferably, the valve remote control terminal further comprises a working power supply circuit unit, a working voltage detection circuit unit, a driving power supply circuit unit and a driving voltage detection circuit unit, wherein a detection voltage output end ADCW of the working voltage detection circuit unit and a detection voltage output end ADCD of the driving voltage detection circuit unit are respectively and electrically connected with a second input end of the micro control circuit unit. As shown in fig. 1 and 6, the working voltage detection circuit unit is configured to detect whether the working power supply of the terminal battery is normal, the driving voltage detection circuit unit is configured to detect whether the driving power supply of the solenoid valve is normal, and if the driving power supply is abnormal, the driving power supply of the solenoid valve can be detected by the micro control circuit unit, so that an alarm message indicating that the corresponding power supply condition is abnormal is reported and sent to the wireless base station/remote device.

To sum up, the valve remote control terminal suitable for intelligent agriculture and the working method thereof provided by the embodiment have the following technical effects:

(1) the embodiment provides a novel valve remote control terminal capable of realizing remote wireless control action and prolonging the battery endurance of the terminal, on one hand, the wireless control channel consisting of a half-duplex transceiving power amplifier circuit and an antenna unit, a wireless transceiving circuit unit, a micro-control circuit unit and a valve control module is utilized to realize the wireless reception of control instruction messages and the corresponding valve control according to the control instruction messages, on the other hand, the energy-saving control channel consisting of the micro-control circuit unit, a power amplifier power supply control circuit unit, the half-duplex transceiving power amplifier circuit and the antenna unit is utilized to perform power-off energy-saving operation on the half-duplex transceiving power amplifier circuit and the antenna unit during dormancy, thereby periodically or intermittently starting to receive the control instruction messages and realizing the purposes of saving energy and delaying the battery endurance of the terminal, the valve remote control terminal is more suitable for an intelligent agricultural scene;

The embodiments described above are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device to perform the methods described in the embodiments or some portions of the embodiments.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some technical features may still be made. And such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Finally, it should be noted that the present invention is not limited to the above alternative embodiments, and that various other forms of products can be obtained by anyone in light of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the claims, and which the description is intended to be interpreted accordingly.

Claims

1. The working method of the valve remote control terminal suitable for intelligent agriculture is characterized by comprising the following steps of:

the valve remote control terminal comprises a micro-control circuit unit, a wireless transceiver circuit unit, a half-duplex transceiver power amplifier circuit, an antenna unit, a power amplifier power supply control circuit unit and a plurality of valve control modules, wherein the valve control module comprises an electromagnetic valve driving circuit unit and an electromagnetic valve electrically connected with the electromagnetic valve driving circuit unit, the micro control circuit unit, the wireless transceiver circuit unit, the half-duplex transceiver power amplifier circuit and the antenna unit are sequentially in communication connection, the power amplifier enable output end (PAEN) of the micro-control circuit unit is electrically connected with the controlled end of the power amplifier power supply control circuit unit, the power supply output end (VPA) of the power amplifier power supply control circuit unit is electrically connected with the power supply access ends of the half-duplex transceiver power amplifier circuit and the antenna unit, the first output end of the micro control circuit unit is electrically connected with the controlled end of the electromagnetic valve driving circuit unit;

the working method of the valve remote control terminal comprises a sleep mode and an awakening mode;

the sleep mode includes the steps of:

s101, after determining to enter a sleep mode, the micro control circuit unit and the wireless transceiver circuit unit enter an energy-saving working state, and meanwhile the micro control circuit unit controls a power amplifier enabling output end (PAEN) to output a first level signal, so that a power supply output end (VPA) of the power amplifier power supply control circuit unit outputs low level voltage, and the half-duplex transceiver power amplifier circuit and the antenna unit are powered off and shut down;

the wake pattern comprises the steps of:

s201, after the awakening mode is determined to enter, the micro control circuit unit and the wireless transceiving circuit unit enter a normal working state, meanwhile, the micro control circuit unit controls a power amplifier enabling output end (PAEN) to output a second level signal, so that a power supply output end (VPA) of the power amplifier power supply control circuit unit outputs high level voltage, and the half-duplex transceiving power amplifier circuit and the antenna unit are powered on to work;

2. The operating method of the valve remote control terminal for the intelligent agriculture in claim 1, wherein: the valve control module further comprises a flow sensor corresponding to the electromagnetic valve, wherein an output end (IOT 1-2) of the flow sensor is electrically connected with a first input end of the micro control circuit unit.

3. The operation method of the valve remote control terminal for smart agriculture according to claim 2, wherein after the solenoid valve is driven to conduct by the solenoid valve driving circuit unit:

4. The operating method of the valve remote control terminal for smart agriculture according to claim 1, wherein if the valve control command message further includes password authentication selection information and password information, the micro control circuit unit, before controlling the valve control module to perform corresponding actions:

5. The operating method of the valve remote control terminal for smart agriculture according to claim 4, wherein if the password authentication selection information and/or the password information is encrypted in the valve control command message, and the valve control command message further includes encryption algorithm selection information and encryption key selection information, the micro control circuit unit decrypts to obtain the password authentication selection information and/or the password information as follows:

6. The method of claim 1, wherein in step S202, if the terminal wake-up message is a broadcast message, the terminal wake-up message further includes a source address invalid bit and/or a broadcast address invalid bit, wherein the source address invalid bit indicates that no source address information exists in the terminal wake-up message, the broadcast address invalid bit indicates that no broadcast address information exists in the terminal wake-up message, the source address information indicates a sender identity of the terminal wake-up message, and the broadcast address information indicates a receiver identity of the terminal wake-up message.

7. The operating method of the valve remote control terminal for the intelligent agriculture in claim 1, wherein: the electromagnetic valve adopts a pulse electromagnetic valve, the electromagnetic valve driving circuit unit adopts a motor driving chip (DR1) with the model number of AT9110 and comprises a first capacitor (C43), a second capacitor (C44) and a first resistor (R22), wherein an OA pin and an OB pin of the motor driving chip (DR1) are respectively and electrically connected with two ends (DAT, DBT) of a coil branch of the pulse electromagnetic valve, two ends of the first capacitor (C43) are respectively and electrically connected with an OA pin and an OB pin of the motor driving chip (DR1), an IA pin and an IB pin of the motor driving chip (DR1) are respectively and electrically connected with two first output ends (DR1A, DR1B) of the micro-control circuit unit, a VCC pin of the motor driving chip (DR1) is electrically connected with one end of the first resistor (R22), a pin of the motor driving chip (DR1) is grounded, the other end of the first resistor (R22) is respectively and electrically connected with one end of the second capacitor (C44) and a power supply end (VB83) of a battery pack (GND), the other end of the second capacitor (C44) is grounded.

8. The operating method of the valve remote control terminal for the intelligent agriculture in claim 1, wherein: the power amplifier power supply control circuit unit adopts a low-dropout linear voltage stabilizing chip (U5) with the model of MCP1824T-3302e/OT and comprises a third capacitor (Cap4), a fourth capacitor (C13), a fifth capacitor (C14) and a second resistor (R5), wherein the low-dropout linear voltage stabilizing chip (U5)

A pin serving as a controlled end of the power amplifier power supply control circuit unit is electrically connected with a power amplifier enable output end (PAEN) of the micro-control circuit unit, a VIN pin of the low-voltage-difference linear voltage stabilization chip (U5) is electrically connected with a battery power supply access end (VBT), one end of the third capacitor (Cap4) and one end of the fourth capacitor (C13) respectively, a GND pin of the low-voltage-difference linear voltage stabilization chip (U5) and another end of the third capacitor (Cap4)One end of the fourth capacitor (C13) is grounded, the VOUT pin of the low-voltage-difference linear voltage stabilization chip (U5) is electrically connected with the power supply output end (VPA) of the power amplifier power supply control circuit unit, one end of the fifth capacitor (C14) and one end of the second resistor (R5) respectively, the RGD PW pin of the low-voltage-difference linear voltage stabilization chip (U5) is electrically connected with the other end of the second resistor (R5), and the other end of the fifth capacitor (C14) is grounded.

9. The working method of the valve remote control terminal suitable for the smart agriculture is characterized in that the half-duplex transceiving power amplifier circuit and the antenna unit adopt a power amplifier chip (U3) with the model of SE2611T and a single-path inverter (U4) with the model of SN 74L VC1G04DBVT and comprise a sixth capacitor (C40) and a seventh capacitor (C41), wherein a L EN pin and a CRX pin of the power amplifier chip (U3) are respectively and electrically connected with a Y pin of the single-path inverter (U4), a PEN pin and a CTX pin of the power amplifier chip (U3) and an A pin of the single-path inverter (U4) are respectively and electrically connected with a half-duplex transceiving switching end (RX) of the wireless transceiving circuit unit, a TX pin of the U3 is electrically connected with a radio frequency signal connecting end (RX 38N) of the wireless transceiving circuit unit after being connected with the sixth capacitor (C383) in series, and a TX pin of the power amplifier chip (U3) is electrically connected with a radio frequency signal connecting end (RFIN 38N) after being connected with the sixth capacitor (RX) in series.