CN214504191U - Farmland environmental data acquisition control device - Google Patents

Abstract

The utility model provides a farmland environmental data acquisition control device relates to an acquisition control device, belongs to the intelligent control field. The power supply comprises a control unit, a power supply output control circuit, a power supply input interface and a voltage and electric quantity calculation circuit; the output end of the control unit is connected with the control input end of the power output control circuit; the input end of the voltage and electric quantity calculation circuit is connected with the power input interface, and the input end of the control unit is connected with the output end of the voltage and electric quantity calculation circuit; the control unit monitors the voltage input by the power input interface calculated by the voltage and electric quantity calculation circuit in real time; the power output control circuit is used for controlling power output, and the power input interface is used for supplying power to the device. The problem of the environment monitoring website cause whole station to drop wire because of the electric power is not enough is solved. Data loss is minimized and power utilization is maximized. The stability and the data integrity of the whole system are improved, and the disconnection rate of the stations is reduced.

Description

Farmland environmental data acquisition control device

Technical Field

The application relates to an acquisition control device, especially relates to a farmland environmental data acquisition control device, belongs to the intelligent control field.

Background

The farmland environment monitoring station is mostly arranged in the fields such as the fields and the ground, and a wired power supply and wired communication equipment are inconvenient to use due to remote places, so that solar power generation or wind-solar complementary power generation is mostly adopted, and under the condition of limited battery capacity, when the continuous rainy weather occurs, the whole environment monitoring station is always disconnected due to insufficient generated energy and the exhaustion of the electric quantity of the battery. The existing scheme generally adopts an independent solar power generation controller as power supply equipment. All power supplies of electric equipment such as data acquisition, monitoring and network of the environment monitoring station are connected in parallel to get electricity. Once the solar controller triggers protection due to undervoltage, overload and the like, all the devices are in a power-off state, so that the whole station is disconnected.

Therefore, a farmland environment data acquisition control device is urgently needed to be provided to solve the technical problems.

SUMMERY OF THE UTILITY MODEL

A brief summary of the present invention is provided below in order to provide a basic understanding of some aspects of the present invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.

In view of this, in order to solve the problem that the whole station is disconnected due to insufficient power of the environmental monitoring station in the prior art, the utility model provides a farmland environmental data acquisition control device, which comprises a control unit, a power output control circuit, a power input interface and a voltage and power calculation circuit; the output end of the control unit is connected with the control input end of the power output control circuit; the input end of the voltage and electric quantity calculation circuit is connected with the power input interface, and the input end of the control unit is connected with the output end of the voltage and electric quantity calculation circuit; the control unit monitors the voltage input by the power input interface calculated by the voltage and electric quantity calculation circuit in real time; the power output control circuit is used for controlling power output, and the power input interface is used for supplying power to the device.

Preferably, the system also comprises four controllable power output interfaces, a multi-channel data acquisition interface, a 485 communication interface, a wired Ethernet interface and a human-computer interface touch screen interface; the four controllable power output interfaces are used for supplying power to other electric equipment, and the multi-path data acquisition interface and the 485 communication interface are used for acquiring environmental data acquired by the environmental sensor; the wired Ethernet interface is used for uploading the acquired data to the cloud server; the human-computer interface touch screen interface is used for connecting human-computer interaction equipment.

Preferably, the device also comprises a photoelectric isolation circuit; and the photoelectric isolation circuit is connected with four controllable power supply output interfaces through a relay.

Preferably, the control unit is an STM32 single chip microcomputer.

Preferably, the voltage and power calculating circuit comprises an LTC2943 chip and a 50m omega sampling resistor.

Preferably, the optoelectronic isolation circuit comprises an EL357 photocoupler and a current limiting resistor.

Preferably, the power output control circuit comprises a coil drive triode, a freewheeling diode, a current limiting resistor, a relay and a self-recovery fuse.

The utility model has the advantages as follows: the device can dynamically manage the power utilization equipment of the whole environment monitoring station according to the self-collected environment data such as light, rain, wind, temperature and humidity and the like in combination with the power supply condition of the current power supply, timely closes part of high-power-consumption equipment when the generated energy is insufficient and the power supply electric quantity is too low, and restarts the closed equipment power supply after the power supply condition is improved. The power supply for data acquisition or video monitoring can be preferentially ensured. The problem of the environment monitoring website cause whole station to drop wire because of the electric power is not enough is solved. Data loss is minimized and power utilization is maximized. The stability and the data integrity of the whole system are improved, and the disconnection rate of the stations is reduced. Moreover, the device organically combines the environmental data acquisition and the equipment power management to form an integrated acquisition control device. The environmental data is directly used as power management parameters, secondary data transmission is omitted, and the real-time performance is higher. The power consumption equipment is more simplified, and unnecessary power consumption expenses are reduced.

These and other advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the present invention, which is to be read in connection with the accompanying drawings.

Drawings

The invention may be better understood by referring to the following description in conjunction with the accompanying drawings, in which like reference numerals are used to designate like or similar parts throughout the figures thereof. The accompanying drawings, which are incorporated in and form a part of this specification, illustrate preferred embodiments of the present invention and, together with the detailed description, serve to further explain the principles and advantages of the invention. In the drawings:

FIG. 1 is a schematic structural diagram of the apparatus according to the present embodiment;

FIG. 2 is a schematic diagram of an input/output interface of the apparatus according to the present embodiment;

FIG. 3 is a schematic diagram of a voltage-to-power calculation circuit according to the present embodiment;

fig. 4 is a circuit diagram of a main control chip according to the present embodiment;

FIG. 5 is a schematic diagram of a photo-isolation circuit according to the present embodiment;

fig. 6 is a schematic diagram illustrating a connection between a power output control circuit and a power output interface according to this embodiment.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The embodiment and reference to fig. 1 to 6 illustrate the embodiment, and the farmland environment data acquisition control device of the embodiment comprises a control unit, a power output control circuit and a voltage and electric quantity calculation circuit; the power supply comprises a control unit, a power supply output control circuit, a power supply input interface and a voltage and electric quantity calculation circuit; the output end of the control unit is connected with the control input end of the power output control circuit; the input end of the voltage and electric quantity calculation circuit is connected with the power input interface, and the input end of the control unit is connected with the output end of the voltage and electric quantity calculation circuit; the control unit monitors the voltage input by the power input interface calculated by the voltage and electric quantity calculation circuit in real time; the power output control circuit is used for controlling power output, the power input interface is used for supplying power to the device, and the power input interface is used for supplying power to the power output end.

The control unit is a single chip microcomputer, and specifically, an STM32 single chip microcomputer of an Italian semiconductor is used as a main control chip. Refer to fig. 4.

The 4G wireless communication module is embedded in the main control chip, the device is directly in wireless connection with the cloud server, and environmental data uploading and remote control of the server on the device are not affected when power supply of other network equipment in the station is turned off.

The voltage and electric quantity calculating circuit comprises an LTC2943 chip (U2) and a 50m omega sampling resistor (Rsense), wherein the LTC2943 battery electric quantity meter chip samples through the Rsense sampling resistor, calculates data such as battery voltage, current and discharge quantity and communicates with a control unit (main control chip) through an IIC bus. The main control chip reads the current voltage, current and discharge value of the battery through the IIC bus, compares the current voltage, current and discharge value with a preset threshold value, and controls the corresponding GPIO pin to control the output power supply. Refer to fig. 3.

The photoelectric isolation circuit comprises EL357 photocouplers (P1, P2, P3 and P4) and current-limiting resistors (R2, R5, R8 and R11). 4 way GPIO pins of main control chip are connected with 4 way photoelectric couplers respectively, carry out 4 way power output control circuit of control rear end after photoelectric isolation through photoelectric couplers. Refer to fig. 5.

The power output control circuit comprises coil driving triodes (Q1, Q2, Q3 and Q4), freewheeling diodes (D1, D2, D3 and D4), current limiting resistors (R3, R6, R9 and R12), relays (K1, K2, K3 and K4) and self-recovery fuses (F1, F2, F3 and F4). The normally open contact of the relay of the power output control circuit is connected to the corresponding power output interface through a self-recovery fuse with the specification of 40V 5A. Refer to fig. 6.

The system also comprises four controllable power output interfaces, a multi-channel data acquisition interface, a 485 communication interface, a wired Ethernet interface and a human-computer interface touch screen interface; the four controllable power output interfaces are used for supplying power to other electric equipment, and the multi-path data acquisition interface and the 485 communication interface are used for acquiring environmental data acquired by the environmental sensor; the wired Ethernet interface is used for uploading the acquired data to the cloud server; the human-computer interface touch screen interface is used for connecting human-computer interaction equipment.

The device also comprises a photoelectric isolation circuit; and the photoelectric isolation circuit is connected with four controllable power supply output interfaces through a relay. The control unit (main control chip) adopts a photoelectric isolation circuit and controls each power output interface through a relay. The interference or damage of the power consumption end to the main control chip is avoided while the power supply capability of the power output interface is ensured. Each power output interface of the controller is provided with an independent 3-5 ampere restorable fuse, and when the active equipment is overloaded or short-circuited, the power supply of the power output interface can be automatically cut off, so that other equipment is prevented from being influenced.

The utility model discloses a theory of operation: the device described in this embodiment, the voltage electric quantity calculating circuit calculates data such as battery voltage, current, discharge capacity, and the like, and the data is transmitted to the control unit, and the control unit controls the output power supply after comparing the received data with a preset threshold. The photoelectric isolation circuit is connected with a normally open contact of the relay of the power output interface, so that the power output interface is in a power-off state by default. After the device is powered on, the control unit can firstly detect information such as input power supply voltage, electric quantity and the like. If the current voltage is too high or the electric quantity is too low, the device can generate a corresponding alarm signal and can not be connected with an output power supply. And if the current voltage is normal and the battery power meets the preset conditions, starting power output, starting to supply power to other equipment until detecting that the voltage is too high or the battery power is too low again, and performing corresponding processing.

The utility model discloses have the usage specialty, adopt the mode that software and hardware combines, the integrated level is higher. The system integrates hardware such as data acquisition, communication, power management and the like. The software is burned in the singlechip in the form of firmware, and the operation is stable and reliable.

The utility model discloses embedded 4G wireless communication module, the device is direct to be connected with high in the clouds server, does not influence environmental data and upload and the remote control of server to the device when closing other network equipment power supplies in the station.

The utility model discloses combine environmental data collection and equipment power management organically, form integration collection control device. The environmental data are directly used as power management parameters, secondary transmission of the data is omitted, and the real-time performance is higher. The power consumption equipment is more simplified, and unnecessary power consumption expenses are reduced.

While the invention has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of this description, will appreciate that other embodiments can be devised which do not depart from the scope of the invention as described herein. Moreover, it should be noted that the language used in the specification has been principally selected for readability and instructional purposes, and may not have been selected to delineate or circumscribe the inventive subject matter. Accordingly, many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the appended claims. The disclosure of the present invention is intended to be illustrative, but not limiting, of the scope of the invention, which is set forth in the following claims.

Claims (4)

1. A farmland environment data acquisition control device is characterized by comprising a control unit, a power output control circuit, a power input interface and a voltage and electric quantity calculation circuit; the output end of the control unit is connected with the control input end of the power output control circuit; the input end of the voltage and electric quantity calculation circuit is connected with the power input interface, and the input end of the control unit is connected with the output end of the voltage and electric quantity calculation circuit; the control unit monitors the voltage input by the power input interface calculated by the voltage and electric quantity calculation circuit in real time; the power output control circuit is used for controlling power output, and the power input interface is used for supplying power to the device.

2. The device of claim 1, further comprising four controllable power output interfaces, multiple data acquisition interfaces, a 485 communication interface, a wired ethernet interface, and a human-machine interface touch screen interface; the four controllable power output interfaces are used for supplying power to other electric equipment, and the multi-path data acquisition interface and the 485 communication interface are used for acquiring environmental data acquired by the environmental sensor; the wired Ethernet interface is used for uploading the acquired data to the cloud server; the human-computer interface touch screen interface is used for connecting human-computer interaction equipment.

3. The apparatus of claim 2, further comprising a photo-isolation circuit; and the photoelectric isolation circuit is connected with four controllable power supply output interfaces through a relay.

4. The apparatus of claim 3, wherein the control unit is an STM32 single chip microcomputer.

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